- Description
Details
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
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
- Specification
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 Weight 0.145 lbs (0.66 kg) - Documents
Documents
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