Extron electronic manual MPA 401-70Vand MPA 401-100VFeatures

MPA 401-70V and MPA 401-100V Features

Patented CDRS (Class D Ripple Suppression) — CDRS is an Extron patented technology that eliminates high frequency switching ripple and EMI emissions found in all Class D amplifiers. CDRS dramatically improves audio performance over conventional Class D amplifier designs and enables Extron power amplifiers to be situated near wireless A/V devices without RF interference.

UL 2043 plenum rated — The amplifiers meet UL 2043 for smoke and heat release for installation within a plenum airspace above a drop ceiling. 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 — Both amplifiers accept balanced or unbalanced, stereo or mono audio input signals on a captive screw connector, and unbalanced audio on both RCA connectors and a 3.5 mm stereo mini jack.

The signals from multiple inputs are summed to produce a single output signal (see figure 6 on page 9).

The three stereo inputs are individually buffered and can be connected to three separate sources at the same time without altering performance.

Quick-plug speaker outputs — Speaker output is on a 5 mm screw lock captive screw connector for quick installation.

ENERGY STAR® qualified amplifiers — The MPA 401-70V and MPA 401-100V amplifiers are ENERGY STAR qualified amplifiers and energy efficient products that conserve energy and reduce costs.

Auto power-down with fast power up — Automatically places the amplifiers into standby after 25 minutes of inactivity. They quickly return to full power status in less than one second upon signal detection. The amplifiers consume just 6 watts when idle and less than 1 watt in standby mode.

Front panel bass, treble, and input level controls — Bass, treble, and input level are easily adjusted from the front panel.

Fanless design — The amplifiers do 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 — A rear panel, three-pin captive screw remote input connector allows remote adjustment of volume and muting. In basic installations without third-party control systems, this port allows the amplifiers to be remotely controlled using the optional Extron VCM 100 series analog volume and mute controller or VC 50 analog volume controller.

Compact size — The 1U, quarter rack width, 6 inch deep metal enclosure, offers flexible mounting options.

MPA 401-70V and MPA 401-100V • Introduction 3