Features

• Inputs: Balanced or unbalanced stereo on a captive screw connector; unbalanced stereo on RCA connectors and a 3.5 mm stereo mini jack

• Speaker outputs: 5 mm captive screw connector

• 15 watts rms per channel into 4 ohms, 8 watts rms per channel into 8 ohms

• Extron Patented CDRS™ - Class D Ripple Suppression — CDRS is an Extron Patented technology that provides a smooth, clean audio waveform and an improvement in signal fidelity over conventional Class D amplifier designs. CDRS eliminates the high frequency switching ripple characteristic of Class D amplifiers, a source of RF emissions which can interfere with sensitive A/V equipment such as wireless microphones.

• Front panel bass, treble, and input level controls

• UL 2043 plenum rated — The MPA 152 meets UL 2043 for smoke and heat release for installation within a plenum airspace above a drop ceiling - power supply excluded. Above-the-ceiling placement conceals the amplifier to prevent theft, and is convenient for installing equipment when space inside the room is limited.

• Balanced and unbalanced buffered audio inputs — Accepts balanced or unbalanced audio input signals on a captive screw connector, and unbalanced audio on both RCA connectors and a 3.5 mm stereo mini jack. The three inputs are individually buffered, and can be connected to three separate sources at the same time without altering performance.

• Fanless design — The MPA 152 does not require fans or vents for cooling, ensuring quiet, reliable operation.

• Automatic clip limiter — Detects actual onset of clipping by comparing input and output waveforms. Gain is automatically reduced with a slow attack and fast release to eliminate clipping. This advanced limiter design protects the speakers from clipping distortion and offers superior sonic characteristics compared to limiters that use signal compression.

• Remote volume and mute control port — In basic installations without control systems, this port allows the MPA 152 to be remotely controlled using the optional Extron VCM 100 analog volume and mute controller or VC 50 analog volume controller.

• Rack-mountable 1U, quarter rack width metal enclosure

• External universal power supply included, part # 70-380-01 — Provides worldwide power compatibility.
  

  MPA 152
  Audio
  Voltage gain
  Balanced	25x (28 dB)
  Unbalanced	50x (34 dB)
  Stereo channel separation	>60 dB @ 1 kHz
  CMRR	74 dB (typical) @ 1 kHz
  Bass adjustment	±10 dB @ 80 Hz (reference) to 1 kHz (2 dB tolerance)
  Treble adjustment	±10 dB @ 10 kHz (reference) to 1 kHz (2 dB tolerance)
  Audio input
  Number/signal type	1 stereo, balanced/unbalanced input 2 stereo, unbalanced inputs (The three inputs are individually buffered and mixed together.)
  Connectors	(1) 3.5 mm captive screw connector, 5 pole (main input) (1) 3.5 mm mini audio jack (tip, ring, sleeve) 1 pair RCA
  Impedance	>10k ohms unbalanced/balanced, DC coupled
  Maximum level	-3 dBV (unbalanced), +3 dBV (balanced) at 1% THD+N
  Input sensitivity
  Balanced	-10 dBV
  Unbalanced	-16 dBV
  NOTE     0 dBu = 0.775 Vrms, 0 dBV = 1 Vrms, 0 dBV ≈ 2 dBu
  Audio output
  Number/signal type	1 stereo or 2 mono (2 channels total)
  Connectors	(1) 5 mm captive screw connector, 4 pole
  Load impedance	4 ohms, minimum
  Amplifier type	Class D
  Output power	8 watts rms per channel, 8 ohms, 1 kHz, 1% THD 15 watts rms per channel, 4 ohms, 1 kHz, 1% THD
  Frequency response	20 Hz to 20 kHz, ±3 dB
  THD + Noise	0.15% @ 1 kHz at nominal level (1 watt, 8 ohm load)
  S/N	74 dB at 20 Hz to 20 kHz (unweighted)
  Damping factor	>30 at 4 ohms
  Control/remote — amplifier
  Control port	(1) 3.5 mm captive screw connector, 3 pole
  Pin configuration	Pin 1 = +10 VDC, 50 mA (max.), pin 2 = volume/mute (variable voltage), pin 3 = GND
  Volume control voltage range	0 V (mute) to 10 V (maximum volume)
  General
  External power supply	100 VAC to 240 VAC, 50-60 Hz, external; to 12 VDC, 3 A (max.), regulated
  Power input requirements	12 VDC, up to 3 A
  Temperature/humidity	Storage: -40 to +158 °F (-40 to +70 °C) / 10% to 90%, noncondensing Operating: +32 to +122 °F (0 to +50 °C) / 10% to 90%, noncondensing
  Cooling	Convection, no vents
  Mounting
  Rack mount	Yes, with optional 1U rack shelf or back of rack mounting kit
  Furniture mount	Yes, with optional mini under desk mounting kit
  Pole mount	Yes, with optional pole mounting kit
  Enclosure type	Metal
  Enclosure dimensions	1.7" H x 4.3" W x 3.0" D (1U high, quarter rack wide) (4.3 cm H x 10.9 cm W x 7.6 cm D) (Depth excludes connectors.)
  Product weight	0.6 lbs (0.3 kg)
  Shipping weight	3 lbs (2 kg)
  Vibration	ISTA 1A in carton (International Safe Transit Association)
  Regulatory compliance
  Safety	CE, c-UL, UL UL rated for use in plenum airspaces: meets UL 2043 for heat and smoke release, excluding the power supply; meets UL 60065 for safety.
  EMI/EMC	CE, C-tick, FCC Class B, ICES, VCCI
  MTBF	30,000 hours
  Warranty	3 years parts and labor