TM1 PLUS
Omni-directional Test & Measurement Microphone Kit
The TM1 Plus is a 6 mm pre-polarized condenser microphone used for test and measurement applications. The TM1 is known for its linearity, accurate response, consistency, ease of use, and affordability.
Equipped with a uniformly controlled omnidirectional polar pattern, the TM1 condenser microphone is designed to capture acoustic measurements for room analysis software programs, real-time analyzers, and other sound control devices. With a flat frequency range of 20 Hz – 20 kHz, the TM1 is an excellent tool for sound engineers, sound companies, and recording enthusiasts.
The TM1 omnidirectional test and measurement microphone is designed, machined, assembled, and tested by Audix in the USA.
The TM1 Plus includes calibration data file* and sensitivity, threaded acoustic windscreen, and CA4231 machined calibration adapter.
Model Variations
TM1 – All brass 4-stage construction. Wide and linear response. Requires 18 – 52 V phantom power.
*Bruel & Kjaer® 4231 sound level calibrator or equivalent
| Transducer Type | Pre-polarized Condenser |
|---|---|
| Frequency Response | 20 Hz – 20 kHz +/-2 dB |
| Polar Pattern | Omni |
| Output Impedance | 200 ohms |
| Sensitivity | 6 mV / Pa @ 1k |
| Equivalent Noise Level | 28 dB (A weighted) |
| Signal to Noise Ratio | 66 dB |
| Maximum SPL | 130 dB with distortion <1% 140 dB Max |
| Power Requirements | 24 – 48 V Phantom |
| Power Consumption | 8.9 mA @ 48 Volts |
| Connector | Switchcraft® or Audix mail XLR |
| Polarity | Positive pressure on diaphragm produces positive voltage on pin 2 relative to pin 3 of output XLR connector |
| Materials / Finish | 4 piece precision machined brass / Nickel Finish |
| Weight | 132 g / 4.7 oz |
| Length | 150 mm / 5.9 in |
