- Description
Details
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 lownoise performance make it the best choice, even when larger preamps could be used. The STM 2 supply input is single ended and operates from 24 Vdc. Operation from 12 Vdc is possible with a 6 dB reduction in headroom. Each output drives high or low impedance loads.
- Features
Features
- 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 Capabilities
- RF-Filtered Inputs
- 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 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 Ω source @ 50 dB gain) Headroom > 20 dB (24 Vdc supply);> 14 dB (12 Vdc supply) Power Requirement Ground‑Referenced, 24 to 33 Vdc @ 25 mA Ambient Operating Environment 0° C to 55° C Dimensions (H x W x D) 0.7" (17.78 mm) x 3" (76.2 mm) x 1.6" (40.64 mm) Weight 0.145 lbs (0.66 kg) - Documents
Documents
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