RDL®

STM-1

Microphone Preamplifier - 50 dB Gain

SKU: STM-1
  • 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
  • Recommended Power Supply ( Not Included )
    PS-24AS (USA)PS-24AX (International)

    Description

    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.

    Specifications

    Input:500 Ω balanced; 5 kΩ unbalanced
    Phantom:24 Vdc; IEC 61938: 2013, Filtered
    Outputs (2):+4 dBu 150 Ω balanced; -10 dBv unbalanced
    Frequency Response:50 Hz to 30 kHz (± 1.5 dB)
    Gain:50 dB nominal
    THD+N:< 0.05%
    CMRR:>50 dB (50 Hz to 20 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
    Ambient Operating Environment:0° C to 55° C
    Power Requirement:GROUND-REFERENCED, 24 Vdc @ 25 mA
    Package Type:Cardboard Box
    WEEE weight:0.145 lbs.
    Shipping Weight:0.195 lbs.
    Tariff code:8543.70.9860
    Package Dimensions:2 x 2 x 4 in.

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    Dimensions

    STM-1

    Downloads

    DocumentsFormat
    DatasheetPDF
    CAD FilesUnitsFormat
    Engineering Functional BlockAmericanDXF
    Panel Diagram - EndAmericanDXF
    Panel Diagram - FrontAmericanDXF
    Panel Diagram - EndMetricDXF
    Panel Diagram - FrontMetricDXF
    High Res ImagesFormat
    stm-1.zipTIF
    Declaration of Conformity
    Download

    Diagrams

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