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Radio Design Labs STM-2X

RDL

BSW PART:
STM2X

Microphone Preamp

$232.71 $310.29
You save $77.58

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.

Power Supply Not Included PS-24AS.

$232.71 $310.29
You save $77.58

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  • Main Features:
  • 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
  • Specifications:
  • Input: 500 Ω balanced; 5 kΩ unbalanced
  • Phantom:24Vdc; IEC 1938: 1996-12, Filtered
  • Line Level Output:+4 dBu 150Ω balanced
  • Mic Level Output:-45 dBu 150Ω balanced
  • Headroom: > 20 dB
  • Line Level Output Gain:Adjustable 35 to 65 dB
  • Mic Level Output Gain: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 Ω 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