End of Life Products – M20D

2-Channel Power Amplifier for Touring and Installation

Powersoft 2ch
ArmoniaPlus
GreenPower
MyPowersoft

Overview

Like all M Series models, the M20D is an outstanding value in any smaller to medium-sized sound system where an efficient, compact and good sounding amplifier is expected to work reliably over a long period. Since 2Ω-capability is usually not needed in smaller systems, the M20D is properly dimensioned with its 4Ω optimization.

In use worldwide by leading touring and event sound companies, Powersoft amplifiers are preferred among the top-ranking system designers, sound engineers, and contractors for providing reliable premier-grade power and headroom in the smallest possible package size.

Alternatively, the M20D can drive constant voltage 70V lines directly where multiple loudspeakers are required.

Maximum efficiency warrants minimum current draw, heat dissipation, and power consumption, resulting in “green” products, saving the user a substantial amount of money over time.

Power supply

  • Advanced switch-mode power supply technology for high performance and compact size
  • Fixed frequency switch mode output
  • Patented output filter with ripple cancellation network

Protections

Fully protected circuit design with:

  • Ac protection: shut down power supply when AC mains voltage is outside the operating range
  • Clip limiter: prevents severely clipped waveforms from reaching loudspeakers, while still maintaining full peak power output
  • DC protection: protects against infrasonic signal at the outputs
  • VHF protections: protects the loudspeakers against non-audible, strong, non-musical high-frequency signals
  • Short circuit protection: protects the amplifier from short circuit or other stressful events for the output circuits with automatic protection reset
  • Long term limiter: protects the loudspeaker against steady long term RMS (non-audio) signals reducing maximum output
  • Thermal protection: output stages operating temperature up to 75 °C (167 °F)
  • Temperature controlled continuous variable speed fan, front to back airflow

Digital Signal Processing*

  • Analog Devices ADAU 1701 DSP architecture
  • 24 bit @ 48 kHz, 120 dB S/N AD/DA converters
  • Separate input/output EQ’s with numerous filters of various types up to 48 dB/oct
  • Peak, RMS, and frequency-dependent limiters
  • Delay for time alignment

General

  • Direct drive constant voltage, 70V Hi-Z distributed lines**
  • Compact size – all models only 1 RU for reduced rack cost and space
  • Lightweight – all models only 7.4 kg (16.3 pounds) for easier racking and shipping
  • Neutrik XLR balanced inputs with loop thru XLR and Speakon outputs connectors
  • Recessed stepped attenuators
  • Modular construction
  • Full four years warranty

Remote management*

  • Control and monitoring through ArmoníaPlus
  • Interface available for MediaMatrix, Crestron, AMX, Q-SYS control, and monitoring systems

* = HDSP+ETH version only
** = HDSP+ETH version with HPF and output voltage limiter preset / external HPF and output voltage limiter required with no-HDSP+ETH version.

General
Output power per channel
Output power per channel1200 W @ 4 Ω600 W @ 8 Ω
Bridge mode2400 W @ 8 Ω
Max output voltage / current
Single channel mode116 Vpeak / 65 Apeak
Bridge mode232 Vpeak
AC main power
Power supplyUniversal, regulated switch mode with PFC (Power Factor Correction)
Nominal power requirement100-240 V ±10%, 50-60 Hz
Operating voltage90 V – 264 V
Power consumption / current draw
Idle115 V: 35 W – 0.6 A230 V: 35 W – 0.3 A
1/8 of max output power @ 4 Ω115 V: 371 W – 5 A230 V: 371 W – 2.54 A
1/4 of max output power @ 4 Ω115 V: 701 W – 9 A230 V: 701 W – 4.5 A
THERMAL
Operating temperature range0° – 45° C – 32° – 113° F
Thermal dissipation*
Idle115 V: 126 BTU/h – 31.8 kcal/h230 V: 126 BTU/h – 31.8 kcal/h
1/8 of max output power @ 4 Ω115 V: 529 BTU/h – 133.3 kcal/h230 V: 529 BTU/h – 133.3 kcal/h
1/4 of max output power @ 4 Ω115 V: 935 BTU/h – 235.6 kcal/h230 V: 935 BTU/h – 235.6 kcal/h