RDL ST-MA2 Muting Monitor Amplifier Paging System


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Dale #:RDL-STMA2

Please Note: requires PS-24AS Power Supply (sold separately)

Availability: Usually ships in 5 - 10 Days

This item usually ships within 5-10 days after your order is placed. Your payment will be charged after completing checkout.
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  • The ST-MA2 is a compact audio monitor amplifier with control inputs to mute or reduce the gain of its output. This module may be used in conjunction with other RDL modules to configure automatic mixing systems or may be used alone as a single-speaker monitor amplifier. The ST-MA2 is typically used to drive a small tabletop or overhead monitor speaker in a conference room, boardroom, courtroom, public forum panel or similar installation. The ST-MA2 is ideally suited for use in automatic mixing systems due to its control inputs.

    The line-level input may be wired balanced or unbalanced. The audio output will drive standard speakers from 4 to 45 ohm . Normal gain is preset by means of a trimmer on the module.For tabletop installations, use the ST-MA2 with the WDG1 and RU-SP1.
    • Single-Speaker Monitor Amplifier
    • Conferencing Monitor Amp
    • Monitor Amp with Muting and Externally Actuated Attenuation Steps
    • Fast, Silent Audio Switching
    • Multiple Control Inputs
    • Adjustable Gain
  • Input Impedance:20 k Balanced or Unbalanced Bridging
    Input Level:-10 dBV minimum for 2 Watts RMS output
    Output Impedance:8 (will drive 4 loads)
    Output Power:1.75 Watts RMS Continuous 2 Watts RMS max.
    THD+N:< 0.5%
    Bandwidth:45 Hz to 14 kHz
    CMRR:> 60 dB (50 Hz to 120 Hz)
    Residual Noise:< -80 dB (below 2 Watts RMS)
    Switching Time:< 50 us
    Attenuation (Muted):> 90 dB (1 kHz),
    > 85 dB (300 Hz to 3 kHz)
    > 75 dB (20 Hz to 20 kHz)
    Selectable Attenuation:3 dB or 6 dB, each setting individually selectable using two independent inputs (connect to ground to activate)
    Power Requirement:GROUND-REFERENCED, 24 to 33 Vdc @ 200 mA for rated output (220 mA @ 2 Watts RMS)
    Ambient Operating Environment:0 degrees C to 50 degrees C
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