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RDL STM-2


Mic Preamp

BSW PART: STM2

RDL STM-2
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.

Main 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 Capability 
• RF-Filtered Inputs

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: 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 Vdc @ 25 mA
• Ambient Operating Environment:0° C to 55° C

RDL STM-2 Figure 1

RDL STM-2 Figure 2

RDL STM-2 Figure 3

List Price: $223.69
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