Name: Radio Design Labs STM-1 Microphone Preamplifier - 50 dB Gain
Brand: Radio Design Labs
SKU: STM-1
Price: 149.96 USD
Availability: InStock

Item Description

Input:	500 Ω balanced; 5 kΩ unbalanced
Phantom:	24Vdc; IEC 1938: 1996-12, Filtered
Outputs (2):	+4 dBu 150 Ω balanced; -10dBv unbalanced
Frequency Response:	50 Hz to 20 kHz (+/- 1.5 dB)
Gain:	50 dB nominal
THD+N:	< 0.05%
CMRR:	> 60 dB (50 Hz to 30 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 to 33 Vdc @ 10 mA maximum
Power Requirement:	GROUND-REFERENCED, 24 to 33 Vdc @ 25 mA
Ambient Operating Environment:	0° C to 55° C

More Info

More Information

Brand

Radio Design Labs

Manufacturer

Radio Design Labs

SKU

STM-1

UPC

813721011046

Part No

STM-1

Weight (lb.)

0.5

Product Datasheet

stm-1.pdf

Unit

EACH

Carton Quantity

1

Short Description

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 to 33 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.

Description

Input:	500 Ω balanced; 5 kΩ unbalanced
Phantom:	24Vdc; IEC 1938: 1996-12, Filtered
Outputs (2):	+4 dBu 150 Ω balanced; -10dBv unbalanced
Frequency Response:	50 Hz to 20 kHz (+/- 1.5 dB)
Gain:	50 dB nominal
THD+N:	< 0.05%
CMRR:	> 60 dB (50 Hz to 30 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 to 33 Vdc @ 10 mA maximum
Power Requirement:	GROUND-REFERENCED, 24 to 33 Vdc @ 25 mA
Ambient Operating Environment:	0° C to 55° C