BSWA Technology Co., Ltd. has become a preferred microphone supplier in China and throughout the world. Using the simple strategy of producing high quality microphones at a low cost, it’s no wonder that many OEMs and system integrators have selected BSWA microphones for their applications. BSWA is fully committed to Quality Management ensuring that every product meets strict standards in performance. BSWA continues to invest in new machine tool technology, new methods of calibration, and new process control methods to further microphone and related equipment technology while reducing manufacturing costs.

Microphones and Preamplifiers:
The MP201 microphone is the best choice for use in IEC61672 Class 1 Sound Level Meters and other noise measurements requiring Class 1 accuracy. It is a 1/2" prepolarized free-field measurement microphone.

The MP205 microphone is a 1/2" prepolarized free-field measurement microphone and the best choice for use in IEC61672 Class 2 Sound Level Meters and other noise measurements requiring Class 2 accuracy.

The MP206 is a 1/2" prepolarized free-field condenser microphone. Developed specifically as an extremely low cost, general purpose microphone, it delivers Class 2 measurement accuracy.

The MA211 and MA408 are ICP preamplifiers specially designed for 1/2" and 1/4" prepolarized microphones, respectively. Their flat frequency response ensures high quality acoustic measurements that comply with IEC 61672 Class 1 requirements.

The ICP microphones, MPA201/205/206, utilize the outstanding performance of BSWA's MA211 ICP preamplifier coupled with the high quality line of 1/2" prepolarized microphones. Using ICP microphones have many advantages over traditional 200V polarized microphones. ICP microphones are lower cost. They are able to use long cable lengths, up to 500 meters. They work with any ICP input channel, which can be used for both acoustic and vibration measurements.

BSWA MPA416 is 1/4” prepolarized free-field measurement microphone. It is an ideal choice for array applications where a large number of microphones are required.

The SM4000 series phantom powered studio microphones are for precision recording and measurement of sound with NO color added. They can be used to record essentially any instrument for a truly accurate representation of the original sound.

Microphone Accessories:
The MC102 is a 2-channel ICP power supply that provides a constant 4.0 mA current to ICP microphones and other ICP sensors. The output signals from the MC102 can be connected directly to other equipment or data acquisition systems via BNC connectors. To reduce line noise and increase portability, the MC102 is battery powered and includes a built-in low battery indicator.

The CA106 Sound Level Calibrator is a pocket-sized, battery operated sound source for quick and direct calibration of sound level meters and other sound measuring systems. The CA106 satisfies the IEC60942 Class 2 standard and fits all 1/2" and 1" diameter microphones. The CA106 provides a continuous sound pressure level of 94.0 dB at 1 kHz.
BSWA provides a wide range of standard accessories: Cables, Microphone adapters for calibrator, and windscreens.

Two-channel Analyzer:
The MC3022 is a USB powered Plug-N-Play measurement soundcard with two ICP input channels and one output source channel. Based on 24 bit A/D converters with two-channel simultaneous sampling frequency of 44.1 kHz, it is simple, powerful, and yet very easy to use. It is the perfect start to building your own two-channel sound and vibration measurement system.

Standard Measurements:
The OS002 Omni Sound Source and SWA100 Power Amplifier are an ideal match for frequency response measurements, including acoustic reciprocity and the Maximum Length Sequence ( MLS) method.

The SW002 Impedance Tube can accurately measure sound absorption coefficients and material impedance values according to standards described in ISO10534-2 (1998). The SW002 is based on the Transfer Function Method, which is much faster than the commonly used Standing Wave Ratio Method.

The TM002 Tapping Machine is a rugged, self-contained sound source for making footfall noise measurements to the latest international standards (ISO140, EN 20140, ASTM E492, GB J75-84, etc.)