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Accelerometers

Accelerometers

The BU Series piezo-ceramic accelerometer has output from 20 Hz to above 10 kHz, and is used primarily as a contact microphone for high noise environments. It may also be used as an accelerometer with lightweight structures. As a contact microphone, the BU may be worn on the throat, or touching a bony part of the head (top, temple, or mastoid bone). BU has been integrated into helmet designs for radio communication for military and emergency services.

Balanced Armature Resource Center

Balanced Armature Resource Center

What is balanced armature? The advantages of balanced armature drivers Balanced armature applications Multi and hybrid systems The Knowles difference View and download white papers, videos and presentations

EK series

EK series

Introduced in 1986, the EK is the lowest noise Knowles microphone. Its high electroacoustic sensitivity and low noise make this microphone an excellent choice for applications where space is not an issue. The EK can also be used in directional applications as a matched omni-directional pair.

EA Series

EA Series

Introduced in 1976, the EA is a time-tested electret condenser microphone. It is widely used in more cost sensitive applications.

Radio Communications

Radio Communications

Knowles sub-miniature drivers are based on balanced armature technology. Their small size allows for smaller, lightweight radio communications earpieces suitable for all-day wear. Accurate sound reproduction provides both increased vocal intelligibility and accurate reproduction of environmental sounds passed through to the earpiece – important in critical applications such as military communications and ear protection devices. Knowles balanced armature drivers are available in a number of sizes and efficiencies, which can be finely tuned to meet your specific performance requirements. They can be designed to fit inside ear molds, assembled into earpieces, or be sub-assembled by Knowles into your communications device.

MQM Series

MQM Series

The MQM is the smallest and most production friendly hearing instrument microphone offered. Utilizing Knowles MEMS technology, the MQM allows for efficient reflow soldering assembly. The MQM offers unmatched performance in reliability and environmental stability. The MQM also offers best in class vibration sensitivity performance. It is ideal for matched omni-directional pair applications as well as applications where the smallest possible size is required.

TM/BTM Series

TM/BTM Series

The TM provides the best combination of performance and size. It boasts performance comparable to the standard EM series, in a package 20% smaller. The TM can also be used in directional applications as a matched omni-directional pair. The BTM is an improved version of the TM microphone. It offers enhanced PFA performance, as well as power-on reset and an electrical high pass filter. The BTM is ideal in directional applications as a matched omni-directional pair.

BK Series

BK Series

Knowles balanced-armature, magnetic technology to give high efficiency, stability and reliability.

CI Series

CI Series

Knowles' largest and most powerful receiver. With its high efficiency and a 143dB SPL maximum output, the CI receiver provides high acoustic power.

TO/BTO Series

TO/BTO Series

The TO is the thinnest omni-directional microphone offered. Its small size is perfect for all applications, especially where space is an issue. The TO can also be used in directional applications as either a matched omni-directional pair, or in the TP series uni-directional / omni-directional pair. The BTO is an improved version of the TO microphone. It offers enhanced PFA performance, as well as power-on reset and an electrical high pass filter. The BTO is ideal in directional applications as a matched omni-directional pair.

DTEC Series

DTEC Series

The DTEC Series combines two TEC receiver elements with a single sound port. Case size is equivalent to BK/EF. DTEC provides increased output and reduced vibration compared to a single receiver.

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