Signal Processing Systems : Preamplifiers : RDL, Radio Design Labs - STM-2

Adjustable Gain Mic Preamp - 35 to 65 dB Gain

Series:

Model: STM-2

Low-Noise Mic Preamp
Adjustable Output Level
High or Low Impedance Mic Inputs
Mic Input to 2 Line Outputs
Two Balanced or Unbalanced Outputs

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The STM-2 is a quality low-noise microphone preamplifier designed for use in commercial sound, broadcast, and recording. The STM-2 is very flexible, with gain adjustment from 35 to 65 dB, two balanced or unbalanced outputs, and available phantom supply input. Its ultra-low distortion and low noise performance make it the best choice, even when larger preamps could be used. The single-ended supply input range is from 24 to 33 Vdc. Operation from 12 Vdc is possible with a 6 dB reduction in headroom. Each output drives high or low impedance loads.

Low-Noise Mic Preamp
Adjustable Output Level
High or Low Impedance Mic Inputs
Mic Input to 2 Line Outputs
Two Balanced or Unbalanced Outputs
Phantom Capability
RF-Filtered Inputs

Preamplifier Signal Type - Audio

Operating Temperature (Maximum): 131 F
Operating Temperature (Minimum): 32 F
Inputs: 500 ohm balanced; 5 k ohm unbalanced
Phantom: 24 VDC Filtered
Outputs (2): +4 dBu 150 ohm balanced; -10dBv unbalanced
Frequency Response: 50 to 20000 Hz (+/- 1.5 dB)
Gain: Adjustable 35 to 65 dB
THD+N: < 0.05 % (50 dB Gain)
CMRR: > 60 dB (50 Hz to 30 kHz)
Residual Noise: < -70 dB (below +4 dBu 150 ohm source @ 50 dB gain)
Headroom: > 20 dB (24 Vdc supply);
> 14 dB (12 Vdc supply)
Power Requirement: 24 to 33 VDC @ 25 mA

EZ-MPA1 - Microphone Preamplifier - Stereo Output with Compressors

EZ-MPA2 - Dual Microphone Preamplifier - Stereo Output with Compressors

FP-MP1 - Studio Quality Mic Preamp w/ Phantom - Terminals & XLR

HR-MP2 - Dual Microphone Preamplifier

HR-MP2A - Dual Microphone Preamplifier

RU-MLA2 - Dual Mic / Line Preamplifier

STM-1 - Microphone Preamplifier - 50 dB Gain

STM-3 - High Gain Mic Preamp - 35 to 75 dB Gain

STM-DA3 - Mic Level Distribution Amplifier - 1x3

STS-RF1 - Shielded Chassis for STICK-ON Module

Preamplifier 949 kb - Other

Project List

DRA-35S
STICK-ON DIN Rail Adapter

DRA-35S6
STICK-ON DIN Rail Adapter

DTB
STICK-ON® Series Detachable Terminal Block

MB-1
Mounting Kit - RU, ST and TX Series

MB-3
Kit to Mount ST, TX Series Modules on FP Panel

MSR-1
Snap Rail Adapter - STICK-ON Series

SMK-12
STICK-ON Mounting Plate

SR-10
STICK-ON Series Mounting Rack - 10 Modules

SR-12A
STICK-ON Series 19" Mounting Rack - 12 modules

SR-4
STICK-ON Series Mounting Rack - 7 Modules max.

STR-19A
STICK-ON Series Racking System - 12 Modules

STR-19B
Hinged 19-inch Rack Mount Panel

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