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Microphone Preamplifier - 50 dB Gain - Radio Design Labs STM-1

SKU: RDLSTM-1
Manufacturer: RDL
Not Rated Yet
MSRP: $199.95
Price: $149.96
Save $49.99 off MSRP
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Microphone Preamplifier - 50 dB Gain

The STM-1 is a low-cost quality microphone preamplifier designed for use in commercial sound and broadcast applications. The compact size makes it ideal where a larger or heavier preamp cannot be used. The high-performance circuit provides a fixed 50 dB gain to bring any mic-level signal up to the line-level range of nearly any line input. The STM-1 supply input is single ended and operates from 24 Vdc. Operation from 12 Vdc is possible with a 6 dB reduction in headroom. For intercom applications, the input will operate directly from a speaker.

Specifications

Input:
500 Ω balanced; 5 kΩ unbalanced

Phantom:
24 Vdc; IEC 61938: 2013, Filtered

Outputs (2):
+4 dBu 150 Ω balanced; -10 dBv unbalanced

Frequency Response:
50 Hz to 30 kHz (± 1.5 dB)

Gain:
50 dB nominal

THD+N:
< 0.05%

CMRR:
>50 dB (50 Hz to 20 kHz)

Residual Noise:
< -70 dB (below +4 dBu; 150 Ω source @ 50 dB gain)

Headroom:
> 20 dB (24 Vdc supply);
> 14 dB (12 Vdc supply)

Phantom Power Input:
24 Vdc @ 10 mA maximum

Ambient Operating Environment:
0° C to 55° C

Power Requirement:
GROUND-REFERENCED, 24 Vdc @ 25 mA

Package Type:
Cardboard Box

Package Dimensions:
2 x 2 x 4 in.

Shipping Weight:
0.195 lbs.

WEEE weight:
0.145 lbs.

Tariff code:
8543.70.9960


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