MPA 122 Retired

22 Watt Two Channel Integrated MPA - Mini Power Amplifier
Key Features
  • Improved Class D amplification design
  • 11 watts rms per channel into 4 ohms, 7 watts rms per channel into 8 ohms
  • Front panel bass, treble, and input level controls
  • Balanced and unbalanced buffered audio inputs
  • Front panel clip limiter switch to prevent amplifier clipping
  • Remote volume and mute control port
The Extron MPA 122
Model Version Description Part #
MPA 122 22 Watt Two Channel Mini Power Amplifier 60-668-01 Retired

This product has been retired.
Suggested Replacement
MPA 152 Plus

The Extron MPA 122 Integrated Mini Power Amplifier provides stereo amplification for speaker systems in classrooms and other applications requiring compact, economical audio solutions. It is an ideal step-up from a basic classroom system utilizing built-in video projector speakers. The MPA 122 delivers 11 watts rms per channel into 4 ohms and 7 watts rms into 8 ohms. It is optimized for driving four 8 ohm ceiling speakers, two in parallel per channel.

The MPA 122 accepts balanced and unbalanced stereo inputs, and provides outputs as stereo or dual mono audio signals. Front panel controls are provided for bass, treble, and input level. The front panel also features switches for stereo/dual mono operation and a clip limiter switch which automatically reduces the gain to prevent distortion or amplifier clipping. The MPA 122 features remote control capability for volume adjustment and muting.

Features

OPTIONAL ACCESSORIES
  PPC 25 Priority Page Controller
  VC 50 Volume Control Wallplate
  PMK 100 Pole Mount Kit for One 1/4 Rack Width Product
  PMK 300 Multi-Product Pole Mount Kit for Three 1/4 Rack Width Products
  MBB 100 Back of Rack Mounting Kit
  MBU 123 Low-Profile Mount Kit for 1/8, 1/4, and 1/2 Rack Width Products
  RSF 123 Rack Shelf Kit for 3.5" Deep Products
  RSU 129 Universal Rack Shelf Kit for 9.5" Deep Products

Specifications

MPA 122
Audio
   Frequency response 20 Hz to 20 kHz, ±1 dB @ 1 watt output
   THD + Noise 0.1% @ 1 kHz at nominal level (1 watt, 8 ohm load)
   S/N >74 dB @ 20 Hz to 20 kHz at maximum output (unweighted, with balanced input)
   Stereo channel separation >55 dB @ 1 kHz, >45 dB @ 20 kHz
   CMRR 80 dB @ 1 kHz, 70 dB @ 20 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 >18k ohms unbalanced, >24k ohms balanced, DC coupled
   Nominal level +4 dBu (1.23 Vrms) balanced or -10 dBV (316 mVrms) unbalanced
   Maximum level 
      Level pot. at 10 o'clock +6 dBV (unbalanced), +16 dBu (balanced) at 1% THD+N
      Level pot. at 9 o'clock +17 dBV (unbalanced), +27 dBu (balanced) at 1% THD+N
   Input level sensitivity -18 dBV from unbalanced input for maximum output (11 watts with a 4 ohm load and level set to maximum) before clipping
    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
   Minimum load impedance 4 ohms
   Amplifier type Improved Class D
   Continuous power with a full load and 1% THD
      At 4 ohms 11 watts (rms) per channel
      At 8 ohms 7 watts (rms) per channel
   Damping factor >30 (with a 4 ohm load)
Control/remote — amplifier
   Control port (1) 3.5 mm captive screw connector, 3 pole
   Pin configuration Pin 1 = +10 VDC, 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, vents on sides and top
   Mounting 
      Rack mount Yes, with optional 1U, 9.5" deep rack shelf (RSU 129, #60-190-01, or RSB 129, 60-604-01); 1U, 6" deep rack shelf (RSU 126, #60-190-10, or RSB 126, 60-604-10); or VersaTools® 1U, 3.5" deep rack shelf (RSF 123, #60-190-20; RSB 123, 60-604-20)
      Furniture mount Yes, with optional VersaTools® MBU 123 mini under desk mounting kit, part #70-212-01
      Pole mount Above-projector mountable with optional PMK 300 Multi-Product Projector Mounting Kit, part 
#70-374-01
   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, CUL, UL
UL rated for use in plenum airspaces: meets UL 2043 for heat and smoke release, excluding the power supply; meets UL 60950 and UL 60065 for safety.
      EMI/EMC CE, C-tick, FCC Class A, ICES, VCCI, 
   Warranty 3 years parts and labor
    NOTE     All nominal levels are at ±10%
    NOTE     Specifications are subject to change without notice.
(7.6-110508-D17)

Diagram

Application Diagram

Panel Drawing

Panel Drawing
© 2020 Extron. Specifications are subject to change without notice.