KNOWLES

KNOWLES - Hearing aid microphones

Microphone Serie Picture Dimensions (mm) Features
EA 5.56 x 3.98 x 2.21 • Rugged construction to withstand severe environmental conditions• High resistance to mechanical shock
• Available with RFI suppression
• Un-damped, screen damped, and internally damped responses
• Numerous port locations
• Custom tube diameters and lengths available
• Wide range of frequency responses
EK - EY 5.56 x 3.98 x 2.21 o Rugged construction to withstand severe environmental conditionso High resistance to mechanical shock
o Available with RFI suppression
o Un-damped, screen damped, and internally damped responses
o Numerous port locations
o Custom tube diameters and lengths available
o Wide range of frequency responses
EL 4.00 x 5.59 x 2.28 • Unidirectional• Integral FET amplifier
• High electroacoustical sensitivity
• Low vibration sensitivity
• Low noise
• Cardioid and supercardioid responses
• High rejection of noise from side and rear
EM - BEM 3.61 x 3.61 x 2.21 o Rugged construction to withstand severe environmental conditionso High resistance to mechanical shock
o Improved RFI and EMI
o Un-damped, screen damped, and internally damped responses
o Numerous port locations and a wide range of frequency responses available
o Extended housing EM microphones are also available, improving sensitivity/noise in the same footprint
o Custom corner frequencies achieved through electrical high pass filter optimize noise performance at low frequencies for demanding matching and directional applications
o BEM offers improved Power Feedthrough Attenuation, improved settling time, and electrical high pass filter
FG - BFG Ø2.59. x 2.59 • Small size is ideal for multiple applications• Rugged
• High resistance to mechanical shock
• Exceptionally low vibration sensitivity
• Various responses available
• Integral RFI suppression
• BFG offers improved Power Feedthrough Attenuation, improved settling time, and electrical high pass filter
• Custom corner frequencies achieved through electrical high pass filter optimize noise performance at low frequencies for demanding matching and directional applications
MQM 3.35 x 2.50 x 0.96 o Silicon based MEMS
o Reflow soldering compatible
o Low vibration sensitivity
o Bottom port PCB mount or traditional tubed options
o Smallest MEMs hearing instrument microphone available
QM 4.00 x 3.00 x 1.17 • Silicon based MEMS• Reflow soldering compatible
• Low vibration sensitivity
• Bottom port PCB mount or traditional tubed options
• Highest SNR MEMs hearing instrument microphone available
TM - BTM 3.61 x 3.61 x 1.30 • Rugged construction to withstand severe environmental conditions• High resistance to mechanical shock
• Improved RFI and EMI suppression
• Un-damped, screen damped, and internally damped responses
• Numerous port locations and a wide range of frequency responses available
• Extended housing TM microphones also available improving sensitivity/noise in the same footprint
• Custom corner frequencies achieved through an electrical high pass filter optimize noise performance at low frequencies for demanding matching and directional applications
• BTM offers improved Power Feedthrough Attenuation, improved settling time, and an electrical high pass filter
TO - BTO 3.61 x 3.61 x 1.30 o Improved RFI and EMI suppressiono Un-damped, screen damped, and internally damped responses
o Numerous port locations
o Custom tube diameters and lengths available
o Custom corner frequencies achieved through an electrical high pass filter optimizes noise performance at low frequencies for demanding matching and directional applications
o BTO offers improved Power Feedthrough Attenuation, improved settling time, and an electrical high pass filter
TP 3.61 x 3.61 x 2.59 • Only four lead wire connections needed• Improved RFI and EMI suppression
• Two port configuration
• Various port locations
• Custom tube diameters and lengths available