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The TM-90BM is an affordable boundary condenser microphone for applications where multiple speakers or other sound sources are to be miked on an equal basis. It is ideally suited for personal broadcasting, reinforcement of conferences or stage plays or ambience miking, for instance.

Compared to miking with several microphones, using a boundary mic has several advantages like higher sensitivity, less tone colouration, an unobstructed view, less “microphone fright” and more. Make sure you place this mic on a large, hard surface such as a table, hard panel or floor to fully benefit of the boundary microphone principle and to obtain a rich sound (the larger the surface, the better the low frequency response).


TM-90BM placed on a conference table
Personal broadcasting with TM-90BM and TM-95GN

Features at a glance

  • Ideal for personal broadcasting with two or more persons
  • Half super-cardioid polar pattern
  • Unobtrusive design and colour, only 24 mm high, perfect for video podcasts
  • Frequency response optimised for speech
  • High sound pressure resistance
  • Switchable low-frequency filter on bottom side (CUT/FLAT/BOOST)
  • Requires phantom power (DC 9–52 V)
  • Dedicated connection cable and carry case included


Element Back-electret condenser
Polar pattern Half-supercardioid
Frequency response 50 Hz – 18 kHz
Sensitivity –35 dB ±3 dB (0 dB = 1 V/Pa at 1 kHz)
Load impedance > 1 kΩ
Output impedance 150 Ω
Output connector 3-pin XLR, male (using the included cable)
S/N ratio 68 dB
Maximum permissible SPL 140 dB (1 kHz, 1% THD)
Phantom power required DC 9–52 V, 3 mA
Weight 260 g (without cable)
Dimensions (W × H × D) 170 mm × 24 mm × 82 mm (excluding protrusions)

Design and specifications subject to change without notice.

Page last modified: 2023-06-02 14:52:09 UTC