RDL®

STM-2

Adjustable Gain Microphone Preamplifier - 35 to 65 dB gain

SKU: STM-2
  • 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
  • Recommended Power Supply ( Not Included )
    PS-24AS (USA)PS-24AX (International)

    Description

    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.

    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:Adjustable 35 to 65 dB
    THD+N: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 to 33 Vdc @ 10 mA maximum
    Power Requirement:GROUND-REFERENCED, 24 to 33 Vdc @ 25 mA
    Ambient Operating Environment:0° C to 55° C
    Dimensions:Height: 0.7 in. (1.7 cm), Width: 3 in. (7.6 cm), Depth: 1.6 in. (3.9 cm)
    Package Type:Cardboard Box
    Package Dimensions:2 x 2 x 4 in.
    Shipping Weight:0.195 lbs.
    WEEE weight:0.145 lbs.
    Tariff code:8543.70.9860

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    Dimensions

    STM-2

    Downloads

    DocumentsFormat
    DatasheetPDF
    CAD FilesUnitsSizeFormat
    Engineering Functional BlockAmerican3.94 KBDXF
    Panel Diagram - EndAmerican3.16 KBDXF
    Panel Diagram - FrontAmerican60.58 KBDXF
    Panel Diagram - EndMetric3.03 KBDXF
    Panel Diagram - FrontMetric62.02 KBDXF
    High Res ImagesFormat
    stm-2.zipTIF
    Declaration of Conformity
    Download

    Diagrams

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