Extron Electronics XTRA Full Rack Series User Guide - Manual (Page 7)

Features
Extron Patented Class D Ripple Steering (CDRS™) technology — 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.
Professional grade signal-to-noise and THD performance — Delivers professional
grade performance with 100 dB signal-to-noise ratio and THD of less than 0.1%.
Front and rear panel LED indicators —
z z Display limiter/protect status when audio clipping or amplifier malfunction occurs.
z z Indicate the presence of input signals.
Audio level adjustment — Potentiometers to adjust the audio level from = (full
attenuation) to 0 dB (no attenuation).
IEC power switch — Rear panel IEC rocker power switch.
1U full rack enclosure — The capability to deliver full-sized amplifier power in one half
the size of many comparable power amplifiers.
High pass filtering — A high pass filter (XPA 2002-70V, XPA 2002-100V,
XPA 2003C-70V, and XPA 2003C-100V only) toggle switch prevents saturation of speaker
input transformers by low frequency signals. Saturation can result in severe distortion of
the speaker output signal.
Bridged output mode — The XPA 2004 has a toggle switch to input channels 1 and 3
and output each input as a single bridged output channel at twice the power of a single
channel. Input 1 is output over the positive terminals of output channels 1 and 2. Input 3
is output over the positive terminals of output channels 3 and 4.
The XPA 2002 has a toggle switch to input channel 1 and output a single bridged output
channel at twice the power using the positive terminals of channels 1 and 2.
Convection cooled, fanless operation — Ensuring quiet reliable operation. All models
generate substantially less heat than similar power amplifer designs.
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.
Rear panel recessed, detented level controls — Provide attenuation of input signals
for adjusting audio system gain staging as well as multi-zone applications. They are
located on the rear panel to prevent users from tampering with level adjustments.
Remote standby — Standby control that remotely shuts off all amplifier output while
power remains active at the amplifier.
Power factor correction — Features power factor correction technology that smoothes
out the high peak currents of the current draw of the amplifier, thus minimizing the
presence of high frequency harmonics on the AC power line, and therefore preventing
audible artifacts from being transmitted to other audio equipment in the system.
Class 2 wiring — The outputs from the amplifiers support Class 2 wiring that meets UL
requirements.
ENERGY STAR
® qualified — All models are ENERGY STAR qualified amplifiers that
conserve energy and reduce costs.
XTRA Full Rack Power Amplifier Series • Introduction 2