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RDL ST-MA2 Mono Audio Amplifier with Muting

BH #RDSTMA2 • MFR #ST-MA2
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RDL ST-MA2 Mono Audio Amplifier with Muting
Key Features
  • 2W, 8-Ohm Single-Speaker Amplifier
  • Conferencing Monitor Amplifier
  • Externally Actuated Attenuation Steps
  • Fast, Silent Audio Switching
The ST-MA2 Mono Audio Amplifier with Muting from RDL is a miniature 2W, 8-Ohm amplifier module designed to drive a single small desktop or overhead-mounted speaker of up to 2W RMS. The ST-MA2 features adjustable gain and provisions for remote muting or attenuation. The amplifier is an ideal choice for boardroom meetings, courtroom proceedings, classrooms, lecture halls, and more.
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RDL ST-MA2 Overview

The ST-MA2 Mono Audio Amplifier with Muting from RDL is a miniature 2W, 8-Ohm amplifier module designed to drive a single small desktop or overhead-mounted speaker of up to 2W RMS. The ST-MA2 features adjustable gain and provisions for remote muting or attenuation. The amplifier is an ideal choice for boardroom meetings, courtroom proceedings, classrooms, lecture halls, and more.

The line-level input may be wired in a balanced or unbalanced configuration. The audio output will drive standard speakers from 4 to 45 Ohms. Normal gain is preset by means of a trimmer on the module. A 24 VDC power supply (sold separately) is required.

Amplifier and Remote Muting
The ST-MA2 is a miniature single monitor amplifier with remote muting capability.
Flexible Output
The audio output will drive standard speakers from 4 to 45 Ohms.
Gain Controls
Normal gain is adjusted with a recessed trim control dial.
Stick-On Adhesive
The durable bottom adhesive permits quick permanent or detachable mounting. The unit can also be rack-mounted with additional RDL accessories (sold separately).
UPC: 813721012159

RDL ST-MA2 Specs

Input Impedance
20 kOhms Balanced or Unbalanced Bridging
Input Level
-10 dBV Minimum for 2 W RMS Output
Output Impedance
8 Ohms (Will Drive 4 Ohms Loads)
Output Power
1.75 W RMS Continuous
2 W RMS Max.
THD & Noise
< 0.5%
Bandwidth
45 Hz to 14 kHz
Common Mode Rejection Ratio
> 60 dB (50 Hz to 120 Hz)
Residual Noise
< -80 dB (Below 2 W RMS)
Switching Time
< 50 µs
Mute Attenuation
> 90 dB (1 kHz)
> 85 dB (300 Hz to 3 kHz)
> 75 dB (20 Hz to 20 kHz)
Attenuation
Selectable: 3 dB or 6 dB, Each Setting Individually Selectable Using Two Independent Inputs (Connect to Ground to Activate, 0.3 mA)
Ambient Operating Environment
32 to 104°F / 0 to 40°C
Power Requirements
Ground-Referenced 24 VDC @ 200 mA for Rated Output (220 mA @ 2 W RMS)
Dimensions
Not Specified by Manufacturer
Weight
Not Specified by Manufacturer
Packaging Info
Package Weight
0.185 lb
Box Dimensions (LxWxH)
4 x 2 x 1.9"

RDL ST-MA2 Reviews

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