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RDL STMA2-BSTOCK


Muting Monitor Amplifier

BSW PART: STMA2-BSTOCK

STMA2.JPGIn Stock
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 Ω. Normal gain is preset by means of a trimmer on the module.

Main Features:
• 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

Specifications:
• Input Impedance: 20 kΩ Balanced or Unbalanced Bridging
• Input Level: -10 dBV minimum for 2 Watts RMS output
• Output Impedance: 8 Ω (will drive 4 Ω 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, 0.3 mA)
• Ambient Operating Environment: 0° C to 40° C
• Power Requirement: GROUND-REFERENCED, 24 Vdc @ 200 mA for rated output (220 mA @ 2 Watts RMS)
• Package Type: Cardboard Box
• Package Dimensions: 2 x 2 x 4 in.
• Shipping Weight: 0.195 lbs.
• WEEE weight: 0.145 lbs.
• Tariff code: 8518.40.2000

List Price: $115.91
$38.45
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