Key Features
- High or Low Impedance Input Mic Preamp
- Fixed 50 dB Gain for Consistency
- Balanced or Unbalanced Output
- Phantom Capability
- RF-Filtered Inputs and Outputs
- Excellent Performance
- Stick-On Convenience
Description
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.
Features:
- High or Low Impedance Input Mic Preamp
- Fixed 50 dB Gain for Consistency
- Balanced or Unbalanced Output
- Phantom Capability
- RF-Filtered Inputs and Outputs
- Excellent Performance
- STICK-ON Convenience
Specifications:
- 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 Vdc @ 10 mA maximum
- Power Requirement: GROUND-REFERENCED, 24 Vdc @ 25 mA
- Ambient Operating Environment:0 C to 55 C
Details
- Manufacturer: RDL
- MPN: STM-1
- Model Number: STM-1
- UPC: 813721011046