MCM Electronics

RDL Distribution Amplifier By Radio Design Labs (ST-DA3) MCM Part #555-ST-DA3

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Specifications Top

Audio Distribution Amplifier

The ST-DA3 gives you the advantages of an audio distribution amplifier PLUS you can put it where you need it. The ST-DA3 allows bridging of any audio line, adjusting the gain, and driving up to three high or low impedance, balanced or unbalanced loads. The ST-DA3's wideband circuitry produces the unsurpassed pure clarity, low-distortion and low-noise for which RDL products are known.

The ST-DA3 features RDL's SupplyFlex power input configuration. The module will operate directly from floating 24 VDC or bipolar DC power. If a jumper is connected between the PWR minus terminal and any module ground, the module power becomes ground-referenced.

  • Audio Distribution with up to 3 Outputs
  • Balanced or Unbalanced Input and Outputs
  • Bridge an Audio Line for Local Distribution
  • Distribution with Impedance Conversion
  • Distribution with Gain or Loss
  • Inputs and Outputs RF-Protected
  • 1x3 Mono or Use Two Units for Stereo
  • RDL® SupplyFlex™ Power Input Configuration

Input: 20 Kohm balanced or unbalanced
Input Signal: -15 dBV to +21 dBu (for +4 dBu output)
Maximum Input Level: +24 dBu
Outputs (3): 150 ohm balanced or 75 ohm unbalanced
Output Signal: Balanced: +4 dBu nominal balanced;
Unbalanced: 6 dB below balanced line level
Maximum Output Level: +25 dBu
Frequency Response: 10 Hz to 100 kHz (± 0.05 dB)
THD+N: < 0.002% (unity gain)
IMD: < 0.003% (unity gain)
Noise below +4 dBu: < -98 dB (unity gain)
Headroom: > 20 dB (above +4 dBu)
Gain: Unity ± 17 dB (adjustable)
CMRR: > 60 dB (50 Hz to 120 Hz)
Power Requirement: GROUND-REFERENCED or FLOATING, 24 Vdc @ 70 mA
Package Dimensions: 2" x 2" x 4"
Shipping Weight: 0.2 lbs.

Part Numbers
MCM Part #:555-ST-DA3
Radio Design Labs Part #:ST-DA3
Package Specifications & Dimensions
Weight:0.23 lbs.
Warranty:1095 days
Need to Return?
Length:4.25 in.
Width:2.25 in.
Height:2 in.
Shipping Information
Extra Shipping Charge:No
Drop Ship:No

Product Reviews Top

  • by precept

    on 3/24/2014

    Perfect for overflow situations

    Overall: 4.5 out of 5

    We use these to feed our bookstore and classrooms for overflow during on campus events. They work great but are susceptible to lightning strikes.

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