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Switched Microphone Preamplifier - 35 to 65 dB gain

Switched Microphone Preamplifier - 35 to 65 dB gain

Part #: STM-2X   Manufacturer: Radio Design Labs

Price: $138.00
Retail: $200.97
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Product Description

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.

Input: 500 Ω balanced; 5 kΩ unbalanced
Phantom:24Vdc; IEC 1938: 1996-12, Filtered
Outputs (2):
Line Level:+4 dBu 150Ω balanced
Mic Level:-45 dBu 150Ω 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 d 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 to 33 Vdc @ 10 mA maximum
Power Requirement: GROUND-REFERENCED, 24 to 33 Vdc @ 25 mA
Ambient Operating Environment:0° C to 55° C

Additional Information

Manufacturer: Radio Design Labs
Part#: STM-2X
Unit: Each
Carton: 1

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