The TM-90BM is a cost-effective boundary microphone designed for applications where multiple speakers or sound sources need to be captured evenly. It is ideal for personal broadcasts, conference amplification, theater performances, and ambient sound recording.

Compared to multi-microphone setups, a boundary microphone offers several advantages, including higher sensitivity, less coloration of sound, a discreet appearance, and reduced "microphone fright" for users. To maximize the benefits of the boundary microphone principle and achieve a full sound, place this microphone on a large, hard surface such as a table, a hardboard, or the floor. The larger the surface, the better the bass response.

Features:

• Ideal for personal broadcasts with two or more people
• Polar pattern: half supercardioid
• Discreet design and color, only 24 mm high, perfect for video podcasts
• Frequency range optimized for speech
• Tolerates high sound pressure levels
• Depth contour switch on the bottom (Cut/Neutral/Boost)
• Requires phantom power (DC 9-52 V)
• Special connection cable and carrying case included

Technical Specifications:

• Element: Back-electret condenser microphone
• Polar pattern: Semi-supercardioid
• Frequency range: 50 Hz - 18 kHz
• Sensitivity: -35 dB ± 3 dB (0 dB = 1V/Pa at 1 kHz)
• Load impedance: > 1 kΩ
• Output impedance: 150 Ω
• Output connection: XLR, 3-pin, male (via supplied cable)
• External voltage distance: 68 dB
• Maximum permissible sound pressure level: 140 dB (1 kHz, 1% THD)
• Required phantom power: DC 9-52 V, 3 mA
• Weight: 260 g (without cable)
• Dimensions (W × H × D): 170 mm × 24 mm × 82 mm (without protruding parts).