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Audix TR40

Pricing & Availability

  • MSRP: $249
  • Discontinued


Reviews & News

TR40 Documentation

OmnidirectionalAudix TR40

Omnidirectional Condenser Microphone

The TR40 is a measurement-style electret condenser, built around the 6mm omni capsules that are common to this application.

The mic is a physical clone of the MBHO MBNM 550 EL, although the specs and performance of the two mics differ widely. Harvey Gerst of Indian Trail Recording Studio has been quoted as speculating that MBHO was the supplier of the TR40, but based on the different specs of the two mics, this seems unlikely.

The TR40 is believed to have been a transformerless design.

The mic was replaced in Audix’ product line in 2008 by the TR40A, which according to published specs is noiser, less sensitive, and has lower max SPL.

The Audix TR40 is also known as: TR-40.


Frequency Response - OmnidirectionalClick Graph to Compare!
TR40 Omnidirectional Frequency Response Chart
Pickup Patterns Pads & Filters
Omnidirectional (17.9 mV/Pa; 20 - 19,000 Hz)
Capsule Dimensions Impedance SPL/Noise
Diaphragm diameter: 6mm
200 Ohms (Low) Max SPL: 128 dB
Self-noise: 17.0 dB(A)
Weight Length Max Diameter Interface(s)
142g (5.01oz) 193mm (7.60'') 21mm (0.83'')
  • 3-pin XLR male (1)
Power Specifications
  • Requires phantom power
  • Phantom voltage: 9-52v

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