MCM Electronics

35~65dB Gain Switched Mic Preamp By Radio Design Labs (STM-2X) MCM Part #555-18892

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MSRP: $210.12
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Switched Microphone Preamplifier - 35 to 65 dB gain

The STM-2X is the ideal choice in many installations where a microphone preamplifier is required, and is the ideal choice where either a toggle-type switch or push-to-talk switch is to be provided for microphone control, particularly if condenser microphones are used.

Specifications Top

  • Quiet Switching of Condenser Microphone
  • Remote Microphone Soft-Switching
  • Switch a Mic-Level Source to a Mic or Line Level Output
  • Remote Toggle Switch or Push-to-Talk Button
  • Adjustable Preset Gain on Microphone Source

Input: 500 ohm balanced; 5 Kohm unbalanced
Phantom: 24VDC; IEC 1938: 1996-12, Filtered
Outputs (2): Line Level: +4 dBu 150 ohm balanced
Headroom: > 20 dB
Gain: Line Level Output: Adjustable 35 to 65 dB
Mic Level Output: Adjustable -15 to 15 dB
Frequency Response: 50 Hz to 20 kHz (+/-1 dB)
THD+N: < 0.05% (50 dB gain)
Residual Noise ON: < -70 dB (below to +4 dBu; 150 ohm source @ 50 dB gain)
OFF Attenuation: > 100 dB (1 kHz)
> 80 dB (50 Hz to 20 kHz)
Switch Control Input: Connect to ground to activate signal; 0.5 mA maximum current required
Switching Time: < 5 ms (soft-switching transition on or off)
CMRR: > 60 dB (50 Hz or 20 kHz)
Phantom Power Input: 24 VDC @ 10 mA maximum
Power Requirement: GROUND-REFERENCED, 24 VDC @ 25 mA
Ambient Operating Environment: 0° C to 55° C

Part Numbers
MCM Part #:555-18892
Radio Design Labs Part #:STM-2X
Package Specifications & Dimensions
Weight:0.1 lbs.
RoHS Comp:Yes
Warranty:1095 days
Need to Return?
Length:4 in.
Width:2 in.
Height:2 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No

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