Acoustic Interface Design Guide MEMS MICROPHONES ECMs SPECIALTY MICROPHONES SPECIALTY SPEAKERS CUSTOM ASSEMBLIES ACOUSTIC SOFTWARE MICROPHONE AND SPEAKER BASICS Discover your next acoustic interface solution. Knowles Acoustics offers you a full spectrum of MEMS microphones, electret condenser microphones, specialty microphones, balanced armature speakers, custom assemblies, and sound conditioning software. This application guide will help you select the right acoustic interface solution. Knowles reserves the right to change designs and specifications without prior notice. Should a safety concern arise regarding this product, please contact us immediately for technical consultation. Knowles cannot assume responsibility for any problems arising out of the use of this product. This information does not convey any license by any implication under any patents or other right. 2 www.knowles.com We can help you every step of the way. It all starts with your application. Or it starts with an idea you may have. For support from concept to design to sub-assembly, or any step along the way, just call us. Or visit us at www.knowles.com Table of Contents MICROPHONES - MEMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5 MICROPHONES - ECMs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8 SPECIALTY TRANSDUCERS - MICROPHONES . . . . . . . . . . . . . . . . 9-14 ACCELEROMETERS & DAMPERS . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 SPECIALTY TRANSDUCERS - SPEAKERS . . . . . . . . . . . . . . . . . . 15-23 CUSTOM ASSEMBLIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 ACOUSTIC SOFTWARE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 MICROPHONE AND SPEAKER BASICS . . . . . . . . . . . . . . . . . . . . 26-27 www.knowles.com 3 MICROPHONES - MEMS SiSonicTM MEMS Microphones The SiSonicTM MEMS microphone series is entering its fourth generation of development, with product shipments exceeding 400 million units to date. The proven and evolving design series continues to support high-performance, high-density innovation in such applications as cell phones, digital still cameras, portable music players, premium earbuds and other portable electronic devices. Design variables include ever-smaller sizes, lower profiles and mounting options, increased output capacities, and new digital audio options that eliminate analog noise. For manufacturers, surface mount designs eliminate off-line subassembly production costs. Customized designs are supplied on tape-and-reel and can be run through standard automatic pick-n-place equipment during in-line surface mount manufacturing. The microphones can also be integrated with our patented IntelliSonicTM software and special porting designs to provide a precisely customized sound. * New digital mics eliminate analog noise * New integrated designs with differential or switchable gain * Zero Height MicTM for thinnest ever designs * Original "mini" with footprint less than 18mm2 * RF Hardened products eliminate GSM/TDMA burst noise in handset designs Part Numbering SPM0204HE3-PB-6 1 1 Product Description SPU: Ultra (3.76x2.95) SPM: Mini (4.72x3.76) 2 Series 0204: Standard 0205: Digital 0206: Differential 0207: Switchable 0208: Amplified 0408: Amplified 0409: Standard 2 3 Port Hole Type H: Standard L:ZHS 3 4 5 4 RF Filter D: Standard E: Enhanced 6 7 5 Supply Voltage 3: 1.5-5.5V 5: 1.5-3.6V 7 Packaging QTY (7" or 13" Reel) 2: 1200 3: 4500 6: 4800 T: 300 (7" Only) 6 Version Knowles Internal Reference Only Ultrasonic Acoustic Sensor * High frequency functionality * Wide range of applications * Micro-sized sensing and actuation 30 NOMINAL SENSITIVITY 0 = -47dBv/Pa Derived from our industry-leading MEMS silicon surface mount microphone technology, our new ultrasonic sensor designs function on a high frequency band. Sensor designs are possible across a wide spectrum of applications requiring highly miniaturized solutions for sensing and actuation/signaling. 20 10 0 -10 -20 -30 10k 20k 30k 40k FREQUENCY (Hz) Model SPM0204UD5 4 Description Directivity UAS Omni Supply Voltage Frequency Range (min-max) 1.5 to 3.6v 10k-65k Hz Sensitivity @1kHz (dB re1V/1Pa) -47.0 www.knowles.com Output Impedance (Ohms) < 300 Maximum Current Drain (mA) < 0.25 50k 60k MICROPHONES - MEMS SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa Ultra Mini Package - 3.76 x 2.95 x 1.10 (mm) * New Ultra Mini with footprint of 11mm2 * Flexible designs available with/without RF filtering and built in amplifier * Ideal for miniature consumer electronics 10 5 0 -5 -10 2 3 4 100 5 6 7 89 1k 2 3 4 5 6 7 8k FREQUENCY (Hz) Model SPU0409HE5 SPU0409HD5 SPU0409HE5 SPU0409HD5 Description Directivity Supply Voltage (min-max) RF Filtering Sensitivity @1kHz (dB re1V/1Pa) Standard Standard Amplified Amplified Omni Omni Omni Omni 1.5 to 3.6v 1.5 to 3.6v 1.5 to 3.6v 1.5 to 3.6v Enhanced Standard Enhanced Standard -42.0 -42.0 -22.0 -22.0 Output Impedance (Ohms) < 300 < 300 < 300 < 300 Maximum Current Drain (mA) < 0.25 < 0.25 < 0.35 < 0.35 Thin Mini Package - 4.72 x 3.76 x 1.25 (mm) SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa 20 * Thin Mini SiSonic with a footprint less than 18mm2 reduces manufacturing costs and brings greater design flexibility * Rugged, solid-state design process for stable acoustic performance under extreme conditions such as temperature, shock and vibration * Digital - Pulse Density Modulation (PDM) device available, which has an integrated sleep mode and is compatible with stereo input applications 5 0 -5 -10 2 100 3 4 5 6 7 89 2 1k 3 4 5 6 7 8k FREQUENCY (Hz) Model SPM0204HE5 SPM0204HD5 SPM0208HE5 SPM0208HD5 SPM0205HD4 Description Directivity Supply Voltage (min-max) RF Filtering Sensitivity @1kHz (dB re1V/1Pa) Standard Standard Amplified Amplified Digital Omni Omni Omni Omni Omni 1.5 to 3.6v 1.5 to 3.6v 1.5 to 3.6v 1.5 to 3.6v 1.6 to 3.6v Enhanced Standard Enhanced Standard Standard -42.0 -42.0 -22.0 -22.0 -26.0 (1 Pa ref Full Scale) Output Impedance (Ohms) < 300 < 300 < 300 < 300 < 300 Maximum Current Drain (mA) < 0.25 < 0.25 < 0.35 < 0.35 < 0.50 STANDARD MOUNT ZERO HEIGHT MICTM SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa Zero Height MicTM Thin Mini Package - 4.72 x 3.76 x 1.25 (mm) 20 10 0 -10 -20 -30 2 100 3 4 5 6 789 1k * SiSonic Zero Height MicTM shrinks product thickness by up to 30% FREQUENCY (Hz) * Minimizes distance between PCB and mobile device housing * Ideal for microphone placement on reverse side of PCB, while maintaining acoustic port on top side of mobile device, for clamshell phone designs * Enables the thinnest, highest density product designs Model SPM0204LE5 SPM0208LE5 Description Directivity Supply Voltage (min-max) RF Filtering Sensitivity @1kHz (dB re1V/1Pa) Standard Amplified Omni Omni 1.5 to 3.6v 1.5 to 3.6v Enhanced Enhanced -38.0 -18.0 Note: All performance curves are typical www.knowles.com Output Impedance (Ohms) < 300 < 300 2 3 4 5 6 7 89 10k Maximum Current Drain (mA) < 0.25 < 0.35 5 MICROPHONES - ECMs Electret Condenser Microphones Electret Condenser Microphones (ECM) are for general use in all electronic products requiring a microphone. ECMs provide good acoustic performance and reliability under non-severe environmental conditions. * Highly efficient electrical specifications * Industry standard sizes * Omni, Uni, and Noise Canceling Directivities * Integrated capacitors for RF filtering * Multiple terminations - Solderless, Pin Type, and Solder Pad * Used in a wide variety of applications, including wired and wireless headsets, corded and cordless phones, PDAs, notebooks, and mobile phones Part Number System and Ordering Information MB3 0 1 5 A S C-1 1 - ECM Sensitivity Level C - Capacitor Configuration: A=10pF, B=33pF, C=33&10pF, Z=None S - Terminal connection: B=PCB, P=Pin, S=Solder A - Directivity: A=Omnidirectional, U=Uni-Directional, N=Noise Canceling, P=Preamplified 15 - Height of Microphone in mm (1.5) 30 - Diameter of Microphone in mm (3.0) B - Charged Backplate, D=Charged Diaphram M - Electret Type Microphone Omni-Directional - 3 mm Size (mm) 3x1.5 Part Number MB3015ASC-1 MB3015ASC-2 Sensitivity (db) -42.03 -44.03 Filter 10pF & 33pF 10pF & 33pF Termination Solder Type Solder Type Filter 10pF & 33pF Termination Solder Type 3x1.5 FREQUENCY RESPONSE RELATIVE SENSITIVITY RELATIVE SENSITIVITY(dB) (dB) 20 20 10 10 00 -10-10 -20-20 -30-30 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 1k 100 10k FREQUENCY (Hz) Omni-Directional - 4 mm Size (mm) 4x1.5 Part Number MB4015ASC-1L Sensitivity (db) -42.03 4x1.5 FREQUENCY RESPONSE RELATIVE SENSITIVITY (dB) 20 10 0 -10 -20 -30 2 100 3 4 2 5 6 7 8 9 1k 3 4 5 6 7 8 9 10k FREQUENCY (Hz) 6 Notes: 1. All sensitives are referenced at 1 kHz (1V/Pa) 2. Frequency graphs are typical. Contact manufacturer for more detailed information. www.knowles.com MICROPHONES - ECMs Omni-Directional - 6 mm Size (mm) 6X1.3 6x1.5 6x2.2 Part Number MB6013ASC-1 MB6015ASC-1 MB6022ASC-1L MB6022APC-0 MB6022ABC-3 MB6027ASC-1L MB6052ASC-1 6x2.7 6X5.2 Sensitivity (db) -42.03 -42.03 -40.03 -40.03 -45.02 -42.03 -42.03 Filter 10pF & 33pF 10pF & 33pF 10pF & 33pF 10pF & 33pF 10pF & 33pF 10pF & 33pF 10pF & 33pF Termination Solder Type Solder Type Solder Type Pin Type PCB, Bullseye Solder Type Solder Type 6x1.3 FREQUENCY RESPONSE 6x1.5 FREQUENCY RESPONSE 20 RELATIVE SENSITIVITY (dB) RELATIVE SENSITIVITY (dB) 20 10 0 -10 -20 10 0 -10 -20 -30 -30 2 3 4 2 5 6 7 8 9 100 3 4 2 5 6 7 8 9 1k 3 4 100 10k 10 10 0 -10 -20 2 3 4 2 5 6 7 8 9 1k 3 4 5 6 7 8 9 10k 4 5 6 7 8 9 6x2.7 FREQUENCY RESPONSE 20 RELATIVE SENSITIVITY (dB) RELATIVE SENSITIVITY (dB) 6x2.2 FREQUENCY RESPONSE 20 100 2 FREQUENCY (Hz) FREQUENCY (Hz) -30 5 6 7 8 9 1k 3 4 5 6 7 8 9 10k 0 -10 -20 -30 100 2 3 4 5 6 7 8 9 2 1k 3 10k FREQUENCY (Hz) FREQUENCY (Hz) Omni-Directional - 9.7 mm Size (mm) 9.7x4.5 Part Number MD9745APA-1 MD9745APZ-F Sensitivity (db) -41.03 -42.02 Filter 10pF None Termination Pin Type Pin Type 9.7x4.5 FREQUENCY RESPONSE RELATIVE SENSITIVITY (dB) 20 10 0 -10 -20 -30 100 2 3 4 5 6 7 8 9 1k 2 3 4 5 6 7 8 9 10k FREQUENCY (Hz) Notes: 1. All sensitives are referenced at 1 kHz (1V/Pa) 2. Frequency graphs are typical. Contact manufacturer for more detailed information. www.knowles.com 7 MICROPHONES - ECMs Uni-Directional - 3 mm, 6 mm, 9.7 mm Size (mm) 3x1.5 Part Number MB3015USB-3 MB3015USB-4 MB6022USC-3 MB6022USC-3P MB6027USC-3 MB6052USZ-2 MB9750USB-4 6x2.2 6x2.7 6x5.2 9.7x5 Sensitivity (db) -47.03 -49.03 -47.03 -47.03 -47.03 -44.03 -47.04 3x1.5 FREQUENCY RESPONSE Filter 33pF 33pF 10pF & 33pF 10pF & 33pF 10pF & 33pF None 33pF Termination Solder Type Solder Type Solder Type Solder Type Solder Type Solder Type Solder Type 6x2.2, 6x2.7, 6x5.2 FREQUENCY RESPONSE 9.7x5.0 FREQUENCY RESPONSE 20 0 10 0 0 0 -10 -20 RELATIVE SENSITIVITY (dB) 20 0 RELATIVE SENSITIVITY (dB) RELATIVE SENSITIVITY (dB) 20 10 0 0 -10 180 -20 10 0 0 -10 -20 180 180 -30 2 3 4 100 5 6 7 89 1k 2 3 4 -30 5 6 7 89 10k 2 3 4 100 5 6 7 89 1k FREQUENCY (Hz) 2 3 4 -30 5 6 7 89 10k 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 1k FREQUENCY (Hz) 10k FREQUENCY (Hz) Noise Canceling - 4 mm, 6 mm, 9.7 mm Size (mm) 4x1.5 6x2.2 9.7x5.2 Part Number MB4015NSC-3 MB6022NSC-2 MD9752NSZ-1 Sensitivity (db) -46.03 -44.03 -40.03 0 -10 Far 50cm -30 0 -10 -20 Far-Field -30 2 3 4 5 6 7 8 9 2 3 4 1k 2 5 6 7 8 9 10k FREQUENCY (Hz) Near-Field 0 -10 -20 -30 Far-Field -40 -40 100 9.7x5.2 FREQUENCY RESPONSE 10 Near-Field RELATIVE SENSITIVITY (dB) 10 RELATIVE SENSITIVITY (dB) RELATIVE SENSITIVITY (dB) 10 Near 6mm -20 Termination Solder Type Solder Type Solder Type 6x2.2 FREQUENCY RESPONSE 4x1.5 FREQUENCY RESPONSE 20 Filter 10pF & 33pF 10pF & 33pF None 100 3 4 5 6 7 8 9 1k 2 3 4 5 6 7 8 9 2 10k 3 4 5 6 7 8 9 100 FREQUENCY (Hz) FREQUENCY (Hz) Value Added Microphone Assemblies Knowles Acoustics has over 60 years experience with precision assembly for demanding applications. By allowing Knowles to work with your design engineers we are typically able to provide a lower overall cost (time to market, R&D expenses, production scrap and inventory issues) with some of the highest quality standards in the industry. * Multiple value added models with cable wire leads and connectors along with rubber boot housings that all meet current RoHS standards are available * Outsource your existing assembly that contains a Knowles component, and maintain control of drawings and process * Meet Halogen Free and GREEN standards Notes: 1. All sensitives are referenced at 1 kHz (1V/Pa) 2. Frequency graphs are typical. Contact manufacturer for more detailed information. 8 www.knowles.com 2 1k 3 4 5 6 7 8 9 10k SPECIALTY TRANSDUCERS - Microphones Specialty Transducer Microphones The Specialty Transducer (ST) product line consists of miniature microphones, speakers, and assemblies. Hundreds of design possibilities can be applied to your product challenge with our high-performance microphone designs. Ideal for new product ideas that require premium audio and very small form factors, solutions include noise canceling, omni-directional and unidirectional performance. Other variables include size, shape, amplification, sensitivity, low noise, and resistance to vibration and mechanical shock. ST components and assemblies are unique in fit, form and function. Our products are designed into high value applications in markets such as the following: * Communications - headsets, handsets, earpieces, telephony, voice recognition, emergency services, military, surveillance * Pro audio - in-ear speakers, lapel microphones, boom microphones * Medical and more - sensors, audiometers, medical implants FG SERIES - Microphone Omnidirectional 2.565 DIA x 2.565 (mm) SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa The FG Series microphone is the world's smallest electret condenser microphone. Its cylindrical shape and compact size facilitate compact designs. The FG can also be used in directional applications as a matched omni-directional pair. * Smallest microphone option * High resistance to mechanical shock * Exceptionally low vibration sensitivity * Various responses available * Integral RFI suppression -40 -50 -60 -70 -80 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 1k 10k FREQUENCY (Hz) Model FG-23329-C05 FG-23329-P07 FG-23629-P16 FG-23629-C36 FG-23652-C36 FG-23652-P16 FG-23742-D36 FG-23742-P16 FG-26163-000 Sensitivity @1kHz (dB re1V/1Pa) DC Supply (Vdc) Max. Amplifier Current Drain (uA) -33.03 -33.03 -33.03 -33.03 -33.03 -33.03 -43.03 -43.03 -33.03 0.9-1.6 0.9-1.6 0.9-1.6 0.9-1.6 0.9-1.6 0.9-1.6 0.9-1.6 0.9-1.6 0.9-1.6 50 50 50 50 50 50 50 50 50 Max. "A" Weighted Noise (1 kHz Equivalent SPL) 30.0 dB 30.0 dB 28.0 dB 28.0 dB 28.0 dB 28.0 dB 30.0 dB 36.0 dB 93.0 dB Nominal Output Impedance (Ohms) Comments 4400 4400 4400 4400 4400 4400 4400 4400 4400 RFI Improved Version 3-wire, 1015 mm Shielded Cable 3-wire, 25.4 mm Litz Wires RFI Improved Version RFI Improved Version 3-wire, 25.4 mm Litz Wires 3-wire, 25.4 mm Litz Wires 3-wire, 25.4 mm Litz Wires RFI Improved Version The EM is a popular, alternative omni-directional microphone. The EM can also be used in directional applications as a matched omni-directional pair. * High resistance to mechanical shock * Improved RFI and EMI * Undamped, screen damped, and internally damped responses * Numerous port locations * Wide range of frequency responses SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa EM SERIES - Microphone Omnidirectional 3.63 x 3.63 x 2.28 (mm) -40 -50 -60 -70 -80 2 3 4 100 5 6 7 8 9 2 3 4 5 6 7 8 9 1k 10k FREQUENCY (Hz) Model EM-23046-P16 EM-23069-000 Sensitivity @1kHz (dB re1V/1Pa) DC Supply (Vdc) Max. Amplifier Current Drain (uA) -36.03 -36.03 1.3 1.3 50 50 Note: All performance curves are typical Max. "A" Weighted Noise (1 kHz Equivalent SPL) 31.0 dB 33.0 dB www.knowles.com Nominal Output Impedance (Ohms) Comments 4400 4400 3-wire, 25.4 mm Shielded Cable Tubeless 9 SPECIALTY TRANSDUCERS - Microphones EK/EL SERIES - Microphone Omnidirectional (EK), Unidirectional (EL) 4.00 x 5.59 x 2.28 (mm) EK omnidirectional microphones provide a unique combination of size, performance and value. Its high electroacoustic sensitivity and low noise make this microphone an excellent choice for applications where space allows. These popular microphones are available in many model varieties. SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa -40 * High resistance to mechanical shock * Available with RFI suppression * Various port locations available * Wide range of frequency responses * High S/N performance -50 -60 -70 -80 5 6 7 8 9 100 2 3 4 2 5 6 7 8 9 1k 3 4 5 6 7 8 9 10k FREQUENCY (Hz) Model EK-23024-C36 EK-23024-P07 EK-23027-C36 EK-23028-C36 EK-23033-C36 EK-23132-000 EK-23133-C36 EK-23142-C37 EL-23078-000 Sensitivity @1kHz (dB re1V/1Pa) DC Supply (Vdc) Max. Amplifier Current Drain (uA) -33.02 -33.02 -33.02 -37.03 -33.02 -33.02 -33.02 -33.02 -33.02 0.9-10 0.9-10 0.9-10 0.9-10 0.9-10 0.9-10 0.9-10 0.9-10 0.9-10 50 50 50 50 50 50 50 50 50 Max. "A" Weighted Noise (1 kHz Equivalent SPL) 26.0 dB 26.0 dB 100.0 dB 100.0 dB 26.0 dB 26.0 dB 26.0 dB 26.0 dB 31.0 dB Nominal Output Impedance (Ohms) Comments 4400 4400 4400 4400 4400 4400 4400 4400 4400 RFI Improved Version 3-wire, 1 m Shielded Cable RFI Improved Version RFI Improved Version RFI Improved Version RFI Improved Version RFI Improved Version NR SERIES - Microphone Noise Canceling 4.00 x 5.59 x 2.28 (mm) SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa The NR Series close talking microphones deliver state-of-the-art noise canceling performance. NR microphones are used as headset microphones in the most demanding communication and speech recognition environments. The NR Series microphones are available in boom microphone packages. (See the FB Series and PNR/PWP Series for details.) * Integral FET amplifier * Diaphragm responds to pressure differential giving high rejection of background noise * Withstands severe environmental conditions * Low vibration sensitivity * High electoacoustical sensitivity * Superior noise canceling performance * Lead attachment available -40 -50 -60 -70 -80 2 3 4 100 5 6 7 8 9 2 1k FREQUENCY (Hz) Model NR-23158-000 NR-23159-000 NR-23160-000 NR-25994-000 10 Sensitivity @1kHz (dB re1V/1Pa) DC Supply (Vdc) Max. Amplifier Current Drain (uA) Max. "A" Weighted Noise (dBV) Nominal Output Impedance (Ohms) Comments -38.03 -52.03 -44.03 -38.03 1.3 1.3 1.3 1.3 50 200 50 700 -100 -100 -100 -100 4400 2500 4400 4400 3-wire 2-wire 2-wire 3-wire Note: All performance curves are typical www.knowles.com 3 4 5 6 7 8 9 10k SPECIALTY TRANSDUCERS - Microphones BJ SERIES - Microphone Omnidirectional, Noise Canceling 7.92 x 5.70 x 4.14 (mm) Knowles' Magnetic Microphones (BJ Series) are based on balanced armature technology and are self-shielded against external magnetic fields. The microphones offer high efficiency, stability, and reliability and are small in size. The diaphragm of the BJ Series responds to pressure differential, giving high rejection of background noise. Both face and edge ports are offered. In addition, there is a short distance between front and back ports resulting in improved noise rejection up to higher frequencies. * Balanced armature technology * High efficiency, stability and reliability * Self-shielded against external magnetic fields * Face and edge ports * Diaphragm responds to pressure differential giving high rejection of background noise * Short distance between front and back ports resulting in improved noise rejection up to higher frequencies Model BJ-21590-000 BJ-28411-000 Directivity Port Location Nominal Impedance at 1kHz (Ohms) Nominal DC Resistance at 20 C (Ohms) Omnidirectional Noise Canceling OJn Dual 3900 300 900 75.5 BL SERIES - Omnidirectional Microphone Knowles' Piezo Ceramic Microphones (BL Series) are rugged, stable and versatile. BL microphones are available in three different package sizes: standard, thin or 0.5" cylindrical shell and cable assembly. Both communication and broadband frequency response versions are offered. In addition, BL microphones have high vibration sensitivity and may be used as accelerometers. * High sensitivity * Wide frequency range * Integral FET amplifier * High resistance to mechanical shock * Various responses * Two case sizes available Dimensions BL-21671-000 BL-21671-140 7.9 x 5.6 x 4.1 7.9 x 5.6 x 4.1 -34.53 -34.54 1.3 1.3 BL-21785-000 BL-21994-000 BL-23497-000 BL-27046-000 7.9 x 5.6 x 2.3 25.4 x 12.7 DIA 25.4 x 12.7 DIA 7.87 x 5.54 x 2.23 -49.03 -49.03 -49.03 -49.03 3 3 3 1.3 Note: All performance curves are typical Nominal Output Impedance (Ohms) 50 50 Max. "A" Weighted Noise (1 kHz Equivalent SPL) 32.0 dB 32.0 dB 160 160 160 160 34.0 dB 34.0 dB 34.0 dB 34.0 dB 4000 4000 4000 4000 Sensitivity @ 1kHz DC Supply (Vdc) Max. Amplifier (dB re1V/1Pa) Current Drain (uA) Model www.knowles.com 13000 13000 Comments Faster Overpressure Recovery 965 mm Shielded Cable 34.3 mm Leads 11 SPECIALTY TRANSDUCERS - Microphones WP SERIES - Waterproof Microphone Omnidirectional, Noise Canceling 4.00 x 5.59 x 2.28 (mm) SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa Knowles' waterproof microphones survive immersion in water. The WP Series' form factor is a very small size with low vibration sensitivity. The excellent noise canceling performance is useful for sensors and instrumentation. The WP Series are available in boom microphone packages. (See the FB Series and PNR/PWP Series for details.) * Waterproofed to submersion in 1m water * Close-talking (noise-canceling) * Corrosion resistant * Withstands explosive decompression * Excellent environmental performance * High resistance to mechanical shock -40 -50 -60 -70 -80 2 3 4 5 2 6 7 8 9 1k 100 3 4 5 6 7 8 9 10k FREQUENCY (Hz) Model WP-23501-000 WP-23502-000 WP-23502-P07 WP-23502-P16 WP-23849-C36 Sensitivity @1kHz (dB re1V/1Pa) Directivity DC Supply (Vdc) Max. Amplifier Current Drain (uA) Max. "A" Weighted Noise (dBV) Nominal Output Impedance (Ohms) -34.03 -32.03 -32.03 -32.03 -32.03 Noise Canceling Omnidirectional Omnidirectional Omnidirectional Omnidirectional 1.3 1.3 1.3 1.3 1.3 300 50 50 50 50 -100 -100 -100 -100 -100 2500 4400 4400 4400 4400 Comments 2-wire, Waterproof 3-wire, Waterproof 3-wire, 1 m Shielded Cable 3-wire, 25.4 mm Litz Wires RFI Improved + Extended Response MR SERIES - Waterproof Microphone Omnidirectional 22.12 DIA x 9.3 (mm) SENSITIVITY IN dB RELATIVE TO 1.0V/0.1 Pa The MR Series Assemblies consist of a microphone element attached to a waterproof bellows assembly. They may be panel mounted, attached for boom applications, and are suitable for outdoor use or repeated submersion. * Highly waterproof - no loss of performance after immersion in 15-20 m water * Corrosion resistant * Withstands explosive decompression * Design proven in rugged environments * Cable wire attached * High resistance to mechanical shock * Acoustically transparent bellows * Resists effects of mud, sand, and salt encrustation 12 -55 -65 -75 2 3 4 100 1.3 100 31.0 dB 2500 1.3 50 30.0 dB 3500 MR-23151-000 -67.53 N/A MR-23793-000 -40.04 MR-28406-000 -40.03 2 6 7 8 9 3 4 5 FREQUENCY (Hz) N/A Max. Amplifier Current Drain (uA) 5 1k Nominal Output Impedance (Ohms) DC Supply (Vdc) Note: All performance curves are typical -45 Max. "A" Weighted Noise (1 KHz Equivalent SPL) 30.0 dB Sensitivity @1kHz (dB re1V/1Pa) Model -35 www.knowles.com 300 Comments 2-wire, 193 mm Leads, Waterproof to 20 m 3-wire, 201 mm Leads, Waterproof to 20 m 3-wire, 202 mm Leads, Waterproof to 20 m 6 7 8 9 10k SPECIALTY TRANSDUCERS - Microphones FB SERIES - Boom Microphone FB Series are available in metallic, flexible boom styles, which utilize a wide array of microphone elements, giving superb noise rejection and high-frequency crossover of near and far field responses. FB's are utilized in a variety of aircraft audio systems and radio communication helmets. Knowles offers customized lengths and end terminations to meet your application needs. * No loss of performance after submersion in 1m water * Excellent environmental performance * Includes RF screening -- meets the 2v/m test over the frequency range 1 to 20 MHz * Metallic, double-spirally-wound, flexible booms which allow easy adjustment and maintain the microphone in an optimum acoustic position above the top lip, or close to the side of the mouth * 4mm and 6mm diameter boom options Model Microphone Element Directivity Microphone Configuration Nominal Boom Diameter (mm) Boom Length Tip-To-Tip (mm) FB-23511-000 FB-23225-000 WP-23500-000 NR-23160-000 Noise Canceling Noise Canceling 3-WIRE 2-WIRE 4 6 160 164 FB-25946-000 FB-25624-000 WP-23501-000 WP-23501-000 Noise Canceling Noise Canceling 2-WIRE 3-WIRE 4 5 74 163 Termination Bare End 6mm Threaded Connector Bare End Bare End PNR/PWP SERIES - Boom Microphone PNR/PWP Series are available in plastic, rigid booms, which utilize either the WP or NR microphone element, giving superb noise rejection and high-frequency crossover of near and far field responses. The boom microphones are utilized in a variety of aircraft audio systems and radio communication helmets. Knowles offers customized lengths and end terminations to meet your application needs. * PWP utilizes the WP Series of electret, close-talking microphones with the same acoustic characteristics as the NR series, but with the addition feature of waterproofing to withstand submersion in 1m water * The housings of the NR Series and WP Series microphones are attached to plastic tubing, which can be customized to a particular length * The overall PNR and PWP packages are extremely lightweight, small and unobtrusive Model Microphone Element Directivity Microphone Configuration Nominal Boom Diameter (mm) Boom Length Tip-To-Tip (mm) PNR-23539-000 PNR-23868-000 NR-23160-000 NR-25997-C97 Noise Canceling Noise Canceling 2-WIRE 2-WIRE 4 NO BOOM 120 N/A PNR-23249-000 NR-23160-000 Noise Canceling 2-WIRE 4 130 Note: All performance curves are typical www.knowles.com Termination Leads Housing Only w/ Leads (No Boom) Gooseneck Boom 13 SPECIALTY TRANSDUCERS - Accelerometers & Dampers BU SERIES - Accelerometer 7.87 x 5.54 (mm) SENSITIVITY IN dB RELATIVE TO 1.0V/G ACCELERATION BU Series Accelerometers are frequently used as contact microphones for radio communications in high noise environments such as firefighting or combat. The accelerometers reproduce voice signals from vibrations at the throat or from bony parts of the head, and are compatible with helmet or headset applications. * Ceramic vibration transducer * High vibration sensitivity * Small size * Wide frequency range * Integral FET amplifier * High resistance to mechanical shock * Withstands severe environmental conditions -25 -35 -45 -55 -65 100 2 3 2 4 5 6 7 89 3 4 5 6 7 89 1k FREQUENCY (Hz) Model BU-21771-000 BU-23173-000 BU-23842-000 BU-27135-000 Thickness Sensitivity @ 1KHz (db re 1V/g) DC Supply (V) Max. Current Drain (uA) 4.06 4.06 2.24 2.24 -45.04.5 -39.04.5 -40.04.0 -45.04.5 1.5 1.5 1.5 1.5 50 50 50 300 Nominal Output Impedance @1 KHz (Ohms) 5200 5200 5200 5200 BF Series - Acoustic Dampers Dampers are acoustic cloth screens for insertion inside acoustic tubing. These damping elements are used between the speaker outlet and the ear canal to smoothen the frequency response. * Smoothen and shape frequency response * Various acoustical resistances and sizes 14 Model Color Nominal Acoustic Resistance (Ohms) PLUG (mm) SCREEN (mm) BF-1859-000 BF-1860-000 BF-1861-000 BF-1921-000 BF-1922-000 BF-1923-000 BF-1988-000 BF-1991-000 BF-1995-000 BF-1997-000 BF-1999-000 BF-3034-000 BF-3035-000 BF-3036-000 BF-3037-000 BF-3038-000 BF-3039-000 BF-3163-000 White Brown Green Red Orange Yellow White Green Red White Grey Grey Brown Orange Red Green Green Yellow 680 1000 1500 2200 3300 4700 680 1500 2200 680 330 330 1000 3300 2200 1500 1500 4700 2.08 2.08 2.08 2.08 2.08 2.08 ----2.08 -------- ------1.12 1.12 1.12 1.78 -1.78 1.78 1.78 1.78 1.78 1.37 1.12 Note: All performance curves are typical www.knowles.com "A" Weighted Noise (dBre. 1V) -103 -103 -103 -103 2 3 4 5 6 7 89 10k SPECIALTY TRANSDUCERS - Speakers Specialty Transducer Speakers Knowles sub-miniature speaker designs are based on balanced armature technology and are utilized in a variety of high performance audio and communication products. Knowles balanced armature speakers are available in several sizes and efficiencies, which can be finely tuned to meet your specific performance requirements. They are designed for use in in-ear applications, including earphones and communication earpieces, or be sub-assembled by Knowles for premium consumer electronics accessories. * High efficiency, stability and reliability * Customizable performance and port locations * Ideal for premium in-ear designs * Component and subassembly solutions TWFK SERIES - Dual Balanced Armature Speaker 5.00 x 2.73 x 3.86 (mm) SENSITIVITY IN dB RELATIVE TO 20Pa The world's smallest dual balanced armature speaker, the TWFK is designed for pro-audio in-ear applications. Enables customized cross-over systems to achieve target frequency response in a package size smaller than the ED Series. * Single sound port for simplified earphone design * Extreme wideband frequency response * Unique woofer/tweeter combination * Enables leading-edge earphone designs for size and performance 110 105 100 95 90 85 80 75 70 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 10k 4 5 1k FREQUENCY (Hz) Model Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 95 12S 31 106 113 TWFK-30017-000 WBFK SERIES - Wideband Balanced Armature Speaker 5.00 x 2.73 x 1.93 (mm) SENSITIVITY IN dB RELATIVE TO 20Pa Same package size as FK Series, WBFK has extended high frequency response. It is recommended as a high frequency component to be combined with low/ midrange speaker for music earphones. * Lower low/mid-band sensitivity compared to FK Series * Best high frequency response of any Knowles element * Combine with low/mid-range speaker for extended frequency response * TWFK pairs WBFK with low frequency FK 110 105 100 95 90 85 80 75 70 2 3 4 5 6 7 8 9 100 2 1k 3 6 7 8 9 10k FREQUENCY (Hz) Model Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 91 12S 13.5 101 114 WBFK-30095-000 Note: All performance curves are typical www.knowles.com 15 SPECIALTY TRANSDUCERS - Speakers FK SERIES - Balanced Armature Speaker 5.00 x 2.73 x 1.93 (mm) 120 SENSITIVITY IN dB RELATIVE TO 20Pa The world's smallest balanced-armature speaker, the FK Series is designed for applications where size is the most important design concern. * 114dB SPL maximum output * Two-terminal zero-bias configuration * Undamped, screen damped, and internally damped responses * Wide range of coil impedances 115 110 105 100 95 90 85 80 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 10k 1k FREQUENCY (Hz) Model FK-23451-000 FK-23466-000 FK-26260-000 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 95.5 95.5 96 12S 12S 12S 450 450 180 104.5 104.5 104.5 118.5 118.5 115.5 The FH speaker represents an unprecedented combination of ultra-compact size and high SPL output with efficiencies normally found only in much larger speakers. The FH speaker line brings true high-gain, high-output performance to earphone designs. * Undamped, screen damped, internally damped, and Ferrofluid TM damped responses * Various port locations, coil impedances, damping options, termination configurations, and frequency responses available * Maximum SPL output of 123dB at resonance peak, 109dB at midband (500Hz)* SENSITIVITY IN dB RELATIVE TO 20Pa FH SERIES - Balanced Armature Speaker 5.09 x 2.80 x 2.59 (mm) 120 115 110 105 100 95 90 85 80 2 3 4 5 6 7 8 9 100 100 FREQUENCY (Hz) Model FH-23375-000 FH-23377-000 FH-23821-000 FH-26553-000 16 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 100 100 100 100 12S 12S 12S 12S 335 685 174 90 108.5 108.5 108.5 108.5 123 123 123 123 Note: All performance curves are typical www.knowles.com 2 3 4 5 6 7 8 9 10000 SPECIALTY TRANSDUCERS - Speakers WBHC SERIES - Balanced Armature Speaker 5.16 x 3.51 x 3.00 (mm) 120 SENSITIVITY IN dB RELATIVE TO 20Pa The advanced design of the HC Series speaker provides extended acoustic bandwidth for hi-fi in-ear speakers when paired with a low frequency speaker. * Lower low/mid band sensitivity compared to HC series * Combine with low/mid-range speaker for extended frequency response 115 110 105 100 95 90 85 80 2 3 4 5 2 6 7 8 9 100 3 4 5 6 7 8 9 10000 100 FREQUENCY (Hz) Model WBHC-23910-000 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 95 12C 130 105 115 HC SERIES - Balanced Armature Speaker 5.16 x 3.51 x 3.00 (mm) SENSITIVITY IN dB RELATIVE TO 20Pa Knowles balanced-armature, magnetic technology to give high efficiency, stability and reliability. HC Series provides increased low frequency dynamic range in a package size equal to FC. * High-output technology provides double (+3dB) the maximum acoustic output of existing Knowles FC Series speakers * Maximum output comparable to Knowles' ED Series speaker in a package size only 68% as large! * Same size and dimensions as Knowles' EH Series * Ideal for applications where small size and high output is required 120 115 110 105 100 95 90 85 80 2 3 4 5 6 7 8 9 100 2 3 4 5 1k 6 7 8 9 10k FREQUENCY (Hz) Model HC-23761-000 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 101 12C 8.4 114 116 FC Series speakers may be used for small radio communication earphones where ED size does meet package requirements. Rounded corners make it slightly smaller compared to EH Series speakers. * Available in High-Output HC speaker version * Two-terminal zero-bias and three-terminal center-tapped configurations * Undamped, screen damped, internally damped, and FerrofluidTM damped responses * Rounded corners for improved fit rates; 10% smaller cross-section compared to EH speaker SENSITIVITY IN dB RELATIVE TO 20Pa FC SERIES - Balanced Armature Speaker 5.18 x 3.55 x 3.00 (mm) 120 115 110 105 100 95 90 85 80 2 3 4 2 5 6 7 8 9 100 1k 3 4 5 6 7 8 9 10k FREQUENCY (Hz) Model FC-26171-000 FC-26887-000 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 104 100 12C 12C 170 425 112 110.5 127 116 www.knowles.com Note: All performance curves are typical 17 SPECIALTY TRANSDUCERS - Speakers EH SERIES - Balanced Armature Speaker 5.19 x 3.55 x 3.00 (mm) SENSITIVITY IN dB RELATIVE TO 20Pa EH Series speakers are approximately 2/3 the size of ED speakers and may be used for small radio communication earphones where ED size does not meet package requirements. * Balanced-armature, magnetic technology to give high efficiency, stability and reliability * High sensitivity * Various responses, including standard, damped and modified * Low distortion * Self-shielded for low magnetic radiation 120 115 110 105 100 95 90 85 80 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 10k 2 3 4 5 6 7 8 9 10k 2 3 4 5 6 7 8 9 10k 1k FREQUENCY (Hz) Model EH-23030-000 EH-23149-000 EH-27479-000 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 100 100 100 12C 12C 12C 625 110 150 109 109 109 126.5 126.5 123 ES SERIES - Balanced Armature Amplified Speaker 5.18 x 3.54 x 3.04 (mm) SENSITIVITY IN dB RELATIVE TO 20Pa EH size speaker with integrated Class D power amplifier * EH micro speaker, but with internal, highly-efficient, class D amplifier * Lower current drain prolongs battery life * Lower distortion * Available in a range of SPL ratings 120 115 110 105 100 95 90 85 80 2 3 4 5 6 7 8 9 100 1k FREQUENCY (Hz) Model ES-23127-000 ES-23140-000 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 101 101 12C 12C 50000 50000 112 112 117.5 115.5 EP SERIES - Balanced Armature Amplified Speaker 6.32 x 4.29 x 2.99 (mm) SENSITIVITY IN dB RELATIVE TO 20Pa Based on Knowles' versatile and popular ED speaker, the EP series adds the benefits of an internal Class-D amplifier. Its compact size and appreciable output power make the EP speaker suitable for a variety of designs. * Class D amplified magnetic speaker * Self-shielded to reduce magnetic radiation * 125dB SPL maximum output * Three-terminal electrical connection 120 115 110 105 100 95 90 85 80 2 3 4 5 6 7 8 9 100 1k FREQUENCY (Hz) Model EP-24075-000 18 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 106 12C 50000 116.5 124 Note: All performance curves are typical www.knowles.com SPECIALTY TRANSDUCERS - Speakers FED SERIES - Balanced Armature Speaker 6.32 x 4.31 x 2.47 (mm) The addition of Ferrofluid TM to Knowles ED series speakers improves mechanical shock survival and provides peak damping to smooth frequency response. 120 SENSITIVITY IN dB RELATIVE TO 20Pa * Ferrofluid TM damped with 2dB, 4dB, or 6dB peak amplitude * Superior shock performance and reduced speaker vibration * Two-terminal zero-bias and three-terminal center-tapped configurations * Numerous port locations and coil impedances 115 110 105 100 95 90 85 80 75 70 2 3 4 5 6 7 8 9 100 2 3 4 5 1k 6 7 8 9 10k FREQUENCY (Hz) Model FED-26792-I04 FED-30048-I04 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 102.5 102 12C 12N 65 26 114.5 111.5 116.5 116 ED SERIES - Balanced Armature Speaker 6.32 x 4.31 x 2.97 (mm) One of Knowles' most versatile and most popular speakers, its compact size and appreciable output power make the ED speaker suitable for a variety of instruments. SENSITIVITY IN dB SPL * Undamped, screen damped, internally damped, and Ferrofluid damped responses * Numerous port locations and coil impedances * High efficiency and low distortion 125 TM 115 105 95 85 100 2 3 4 5 2 6 7 8 9 1k 3 4 5 6 7 8 9 10k FREQUENCY (Hz) Model ED-21744-000 ED-21913-000 ED-23147-000 ED-23619-000 ED-23801-000 ED-23814-000 ED-26245-000 ED-26598-000 ED-26821-000 ED-27045-000 ED-27230-000 ED-27304-000 ED-29689-000 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 104 104 102.5 104 104 104 104 102.5 102.5 104 104 104 104 12C 12C 12C 12C 12S 12S 12C 12C 12C 9C 12C 12C 12C 1700 780 48 7.1 196 50 55 395 7.1 395 79 290 7.1 111.5 112 110 112 112 112 112.2 115.5 116 112 112 111.5 112 123 127 120.5 127 122 128 122 115.5 120.5 127 127 127 127 www.knowles.com Note: All performance curves are typical 19 SPECIALTY TRANSDUCERS - Speakers EC SERIES - Balanced Armature Speaker 7.57 x 4.31 x 3.67 (mm) SENSITIVITY IN dB RELATIVE TO 20Pa EC Series speakers are commonly used in isolating earphones for radio communication. * Similar SPL output to the BK Series * Rounded corners on the face opposite the terminal pad * 34% smaller volume than the BK Series 125 120 115 110 105 100 95 90 85 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 10k 1k FREQUENCY (Hz) Model EC-23097-000 EC-23098-000 EC-26368-000 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 108 108 108 12S 12S 12S 200 425 54 115 115 114 130 130 129 TEC SERIES - Balanced Armature Speaker 7.87 x 4.09 x 2.79 (mm) The TEC combines output comparable to the larger BK speaker in an ultra-thin package. The TEC is suitable for multi-element earphone designs. SENSITIVITY IN dB RELATIVE TO 20Pa 130 * Ultra-thin * Wideband output * DTEC combines two TEC elements * Enables small multi-element designs 125 120 115 110 105 100 95 90 85 80 2 3 4 5 6 7 8 9 100 2 3 4 5 1k 6 7 8 9 10k FREQUENCY (Hz) Model TEC-30033-000 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 119 12C 31 117 129 DTEC SERIES - Balanced Armature Speaker 7.87 x 4.09 x 5.59 (mm) The DTEC Series combines two TEC speaker elements with a single round port. Case size is equivalent to BK/EF. DTEC provides increased output and reduced vibration compared to a single speaker. SENSITIVITY IN dB RELATIVE TO 20Pa 130 * Dual elements with single sound port * More output than BK in equal package size * Reduced vibration compared to BK * Improved frequency response compared to BK 125 120 115 110 105 100 95 90 85 80 2 100 3 4 5 6 7 8 9 1k FREQUENCY (Hz) Model DTEC-30008-000 20 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 121 12S 31.5 123.5 131.5 Note: All performance curves are typical www.knowles.com 2 3 4 5 6 7 8 9 10k SPECIALTY TRANSDUCERS - Speakers BK SERIES - Balanced Armature Speaker 7.87 x 5.59 x 4.01 (mm) BK Series speakers provide broadband performance at value pricing. They are commonly used for full range in-ear speakers and communications utilizing an earplug design. SENSITIVITY IN dB SPL 135 * High efficiency and low distortion * Various port locations, coil impedances, damping options, terminal configurations, and frequency responses available 125 115 105 95 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 10k 1k FREQUENCY (Hz) Model BK-21600-000 BK-21604-000 BK-21610-000 BK-21613-000 BK-21615-000 BK-21669-000 BK-23134-000 BK-26824-000 BK-28507-000 BK-28510-000 BK-28562-000 BK-29725-000 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 123 123 121 118 118 123.5 118 119 126 126 123 118 12S 12S 12S 1S 12S 12C 12S 12S 12S 12S 12S 12S 285 2320 60 450 450 24 285 16 13.3 320 23 285 118 118 126.5 118 118 118 118 118 122.5 123 119 118 133 133 136 134 134 134 134 129 136 135 131 128 CM SERIES - Balanced Armature Speaker 8.38 x 16.64 DIA (mm) * Balanced-armature, magnetic technology to give high efficiency, stability and reliability * High acoustic efficiency enables sufficient sound output even when limited power is available * In-built static protection * Lightweight, matt-black, plastic housing * Ergonomically designed with rounded edge to fit the concha * High-quality sound output * Tailored bandwidth for superb speech intelligibility Model CM-23152-000 CM-23299-000 CM-28421-000 CM-28431-000 CM-28452-000 125 SENSITIVITY IN dB SPL The CM Series delivers the benefits of balanced armature technology in a compact finished package. The CM is ideal for use in situations where a non-contacting headset is required, but signal voltage is limited - as is common for radios and wireless telephones. The CM also conserves battery power, and provides static shock protection for the user. 115 105 95 85 100 2 3 4 5 6 7 8 9 1k 2 3 4 5 6 7 8 9 10k FREQUENCY (Hz) Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 103 103 103 103 103 Face Face Face Face Face 150 150 360 30 360 114.5 114.5 114.5 114.5 114.5 129 119 119 119 119 www.knowles.com Note: All performance curves are typical 21 SPECIALTY TRANSDUCERS - Speakers SR SERIES - Balanced Armature Speaker 8.84 DIA x 5.00 (mm) At 8.8mm diameter, the SR is the first round balanced armature speaker in the marketplace. SR offers output equivalent to the BK series and maximizes bass performance. SENSITIVITY IN dB RELATIVE TO 20Pa 130 * Round package facilitates earphone designs * Drop-in upgrade for moving coil dynamic speakers * Designed for high volume production * Balanced armature technology 125 120 115 110 105 100 95 90 85 80 2 3 4 5 6 7 8 9 100 2 3 4 5 6 7 8 9 10k 2 3 4 5 6 7 8 9 1k FREQUENCY (Hz) Model SR-8850NSS-000 SR-8850NWS-000 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 113 114.5 Face Face 37 21.5 124.5 123 130.5 132 CI SERIES - Balanced Armature Speaker 9.47 x 7.18 x 4.10 (mm) Knowles' largest and most powerful speaker, the CI series is the speaker of choice. With its high efficiency and a 143dB SPL maximum output, the CI speaker provides optimal low frequency performance. SENSITIVITY IN dB SPL 135 * Two-terminal zero-bias and three-terminal center-tapped configurations * Various port locations, coil impedances, termination configurations, and frequency responses available 125 115 105 95 100 2 3 4 5 6 7 8 9 1k FREQUENCY (Hz) Model CI-22748-000 CI-22762-000 CI-22955-000 CI-22960-000 CI-28487-000 CI-28597-000 22 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 125 125 125 125 125 125 12C 1S 12C 12C 1S 11S 250 175 68 @ 1kHz 400 100 @ 1kHz 68 @ 1kHz 128.5 128.5 128.5 128.5 128.5 128.5 138.5 138.5 138.5 138.5 138.5 138.5 Note: All performance curves are typical www.knowles.com 10k SPECIALTY TRANSDUCERS - Speakers MR SERIES - Waterproof Speaker 22.12 DIA x 9.3 (mm) The MR Series Assemblies consist of a speaker element attached to a waterproof bellows assembly. They may be panel mounted, and are suitable for outdoor use or repeated submersion. SENSITIVITY IN dB SPL 125 * Highly waterproof - no loss of performance after immersion in 15m water * Corrosion resistant * Withstands explosive decompression * Design proven in rugged environments * Leads attached * High resistance to mechanical shock * Acoustically transparent bellows * Resists effects of mud, sand, and salt encrustation Model MR-23333-000 115 105 95 85 2 100 3 4 5 6 7 8 9 2 3 4 5 6 7 8 9 10k 3 4 5 6 7 8 9 1k FREQUENCY (Hz) Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 100 Face 21 110 129 CB SERIES - Balanced Armature Speaker 25.15 x 25.15 x 9.65 (mm) The CB Series Transceiver offers high electro-acoustic efficiency to conserve power in push-to-talk radio handsets and other battery operated equipment. The CB is available with mounting pins to facilitate assembly to a PC board. Model CB-23817-000 is designed to survive submersion in water. SENSITIVITY IN dB SPL 90 * Excellent sound quality * High speech intelligibility, stability, and reliability * Suitable for PCB mounting * Can function as a microphone or beeper * Various impedances * Face and edge port locations available 80 70 60 50 2 3 4 5 100 6 7 8 9 1k 2 10k FREQUENCY (Hz) Model CB-22849-000 CB-22850-000 CB-23817-000 Sensitivity @ 1kHz (dB SPL) Port Location Impedance @ 500Hz (Ohms) Max SPL @ 500Hz (dB SPL) Max SPL @ 1st Peak (dB SPL) 73 73 83 Edge Edge Edge 24 48 48 80.5 80.5 95 96.5 96.5 107 www.knowles.com Note: All performance curves are typical 23 CUSTOM ASSEMBLIES FINISHED GOODS Wherever your design ideas take you, Knowles Acoustics can support your need for customized audio assemblies. Our custom Finished Goods offer a turnkey solution utilizing the acoustic expertise and components of Knowles Acoustics. COMPLETE SOLUTION Knowles Acoustics Finished Goods program offers reduced time to market at an ultimately reduced total manufacturing cost of acoustic product ownership. Support in design, application, assembly and testing are all elements included in our services. Off-the-shelf designs are also available. Design Support Manufacturing Services * Industrial * Mechanical * Application Tuning * Assembly * Cabling * Testing * Utilization of Knowles Acoustic components MARKET APPLICATIONS Ultimately, our mission is to improve the acoustic interface and simplify the manufacturing process for customers. Our long term acoustic history provides the expertise for markets and customers of: * Mobile media products * Industrial communications * Consumer electronics applications MARKET MATRIX Assembly Designs Single Ear Stereo Microphone MP3 Mobile Phone Smart Phone/PDA Notebook Industrial Comm. Collaborate in-depth with Knowles Acoustics to arrive at an integrated component and assembly design to manufacture for you. 24 www.knowles.com ACOUSTIC SOFTWARE INTELLISONICTM The intelligibility and use of mobile communications are often impeded by the impact of noise from the immediate environment. IntelliSonic is a software-based speech enhancement technology that when coupled with Knowles' microphones, reduces the effects of reverberation, directionally interfering speech, background noise and annoying acoustic echo. COMPLETE SOLUTION - Integrated Systems When you consider the interdependency of microphone design, acoustic porting, and sound signal conditioning, it's easy to see why Knowles Acoustics has taken an integrated approach to your acoustic system needs. ACOUSTIC PORTING MICROPHONES TECHNOLOGY INTELLISONIC SOFTWARE FEATURES * Noise suppression 16 dB * Interference cancellation via beam-forming array 30dB * Acoustic echo cancellation 27dB * Speech bandwidth 8kHz * Adjustable acceptance and look angles * Fully adaptive system adapts to changing acoustic environment * Upper filter driver adherent to Microsoft's windows driver model (WDM) * Rich application programming interface (API) set * Real-time processing * Low speech distortion APPLICATIONS Platforms such as tablets, laptops, ultra-mobile personal computers (UPCs), and other mobile computing devices have a number of applications that would benefit from IntelliSonic to enhance the user experience and final product perception. * Language Translation * Voice Annotation * Audio Note Taking * VoIP Telephony * Command and Control * Voice recognition * Dictation PRODUCT MATRIX IntelliSonicTM Attenuates Unwanted Sounds Product Code DX01 DX02 DXEC01 DXEC02 # of Microphones Noise Reduction Acoustic Array Echo Cancellation 1 2 1 2 - - - - Unprocessed Signal Using IntelliSonicTM (Visual output of recordings using same microphone) LICENSING A license per end user copy is recommended. This allows access to continued improvements and new releases. The license fee is dependent upon volumes and product platforms. SUPPORTED PLATFORMS * Operating System: Windows(R) XP/2000 (supports AC'97 and HDAudio), Windows CE www.knowles.com Note: All performance curves are typical 25 MICROPHONE AND SPEAKER BASICS MICROPHONES Microphones measure sound pressure. Inside a Knowles microphone is a thin flexible diaphragm, an electrically charged plate, and an amplifier (Fig. 1). The output voltage is proportional to changes in the small separation between the diaphragm and the charged plate (Fig. 2). As sound pressure inside the front cavity increases, the diaphragm is pushed closer to the plate. As the pressure decreases, it moves further away. The motion of the diaphragm produces a small electrical signal that is amplified by a miniature circuit inside the microphone. The sensitivity of a typical Knowles' microphone is measured in units of dB relative to 1 Volt per 0.1 Pascal. Fig 1: Cross section of a Knowles EM microphone OUTPUT TERMINAL WIRE AMPLIFIER SOUND PRESSURE CHARGE PLATE DIAPHRAGM FRONT CAVITY FIG. 2: EM diaphragm and electret CHARGE PLATE DIAPHRAGM 26 AIR GAP SEPARATION www.knowles.com MICROPHONE AND SPEAKER BASICS SPEAKERS The speaker converts an electrical signal into sound. A cross section of a typical Knowles speaker is shown in Fig. 3. The basic components of the speaker are: a coil of wire, a metal U-shaped reed called the armature, a pair of permanent magnets, a drive rod, and a diaphragm. The coil and armature act as an electromagnet. An alternating current in the coil causes the polarity of the armature to switch back and forth from north to south. The free end of the armature bends slightly up and down as it is attracted alternately to the top and bottom magnets (Fig. 4). The diaphragm, pulled along by the drive rod, pumps air in and out of the speaker. The mechanical motion of the armature is thus converted into sound. The sound output of a typical Knowles' speaker is measured in units of dB SPL (sound pressure level) relative to 20 Pa. Fig. 3: Cross section of a Knowles EH speaker OUTPUT TERMINAL COIL DRIVE ROD DIAPHRAGM MAGNETS ARMATURE Fig. 4: The motor of the speaker has a coil, an armature, and a pair of permanent magnets. www.knowles.com Note: All performance curves are typical 27 Globally Positioned AMERICAS EMEA / ASIA PACIFIC Knowles Korea Knowles Europe, Africa & Middle East Knowles Japan Knowles China Knowles North & South America Knowles Taiwan Knowles Malaysia Knowles Singapore Knowles Australia World Headquarters Manufacturing Sales & Application Engineering Knowles Acoustics maintains sales, marketing, engineering and manufacturing globally. For immediate assistance on your specific requirements, please call the nearest facility listed below. www.knowles.com AMERICAS: Knowles Acoustics 1151 Maplewood Drive Itasca, IL 60143 U.S.A. Phone: 630-250-5930 Fax: 630-250-5932 EUROPE: Knowles Acoustics York Road, Burgess Hill West Sussex, RH15 9TT England Phone: +44-1444-235432 Fax: +44-1444-248724 (c) 2007 Knowles Acoustics Printed In USA JAPAN: Knowles Acoustics 2-2-16 Sangenjaya Setagaya-Ku, Tokyo 154-0024 Japan Phone: 81-3-5779-8503 Fax: 81-3-5779-8523 KOREA: Knowles Acoustics #1212 Dongbu Root Building, 16-2 Sunae-Dong Bundang-Ku, Sungnam-Shi Kyunggi-Do, Korea Phone: 82-31-712-2223 Fax: 82-31-712-3314 ASIA: Knowles Acoustics 5F, No. 129, Lane 235, Bauchiau Rd. Shindian City, Taipei 23145, Taiwan Phone: 886-2-8919-1799 Fax: 886-2-8919-1798 KA-003-12-07V3