Features - Extron electronics XPA Ultra Series User Manual

Features

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350 Watts per channel into 8 ohms or 4 ohms
ENERGY STAR ® qualified amplifier — The XPA U 3502 is an ENERGY STAR-qualified
and energy efficient amplifier conserving energy and reducing costs.
Extron Patented CDRS (Class D Ripple Suppression) Technology — CDRS is an
Extron pantented technology providing a smooth and clean audio waveform, and improving
signal fidelity over Class D amplifier designs. CDRS eliminates the high frequency switching
ripple characteristics of Class D amplifiers, a source of RF emissions which can interfere
with sensitive AV equipment like wireless microphones.
Convection cooled and fanless operation - can be stacked without extra rack
space for ventilation — The XPA U 3502 does not have internal fans or vents for
cooling, ensuring quiet reliable operation. The unit generates substantially less heat than
conventional power amplifiers, making the XPA U 3502 ideal for rack-mount applications
where space is limited.
Rack Mounting Ventilation Recommendations
See
Defeatable auto-standby with fast wake up — The amplifier meets ENERGY STAR
qualification requirements with an auto-standby feature that automatically places the
unit into standby after 25 minutes of inactivity, thereby dramatically reducing power
consumption. The XPA U 3502 quickly returns to full power in less than 100 ms upon signal
detection, with minimal inrush current. Auto-standby can be disabled if required.
UL 2043 Plenum-rated when used with the optional Flexible Conduit Adapter
Kit/AV equipment — The XPA U 3502 amplifier meets UL 2043 when installed with the
Flexible Conduit Adapter Kit, part # 70-228-02. The amplifier must meet this requirement
for heat and smoke release for installation within a plenum airspace. Above-the-ceiling
placement conceals the amplifier to prevent theft, and it is convenient for installing when
space inside the room is limited.
1U, half-rack enclosure — mounts in a standard rack enclosure with the included
hardware.
Remote volume and mute control per channel — With Extron VCM, VC, and select
MediaLink controllers.
Professional grade signal-to-noise and THD+N performance — The XPA U 3502
delivers professional grade performance, featuring 100 dB signal-to-noise ratio and THD+N
of less than 0.1%.
Ultra low inrush current at power up - no need for power sequencing — Allows
multiple XPA Ultra amplifiers to be powered on simultaneously without overloading power
circuits. This eliminates the need for power sequencing.
Power factor correction - removes harmonic content on AC line — The XPA U 3502
features power factor correction technology that smooths out the high peak currents of the
amplifier's current draw, minimizing the presence of high-frequency harmonics on the AC
power line, preventing audible artifacts from being transmitted to other audio equipment in
the system.
Rear panel recessed, detented level controls — Provides attenuation of input signal
for adjusting audio system gain staging. These controls are lcoated on the rear panel to
prevent tampering with the level adjustments. Laser-etched markings provide enhanced
visibility of settings for ease of configuration.
Remote standby port — Enables the XPA U 3502 to be remotely powered down when
not in use, reducing operating cost.
Automatic clip limiter — Detects actual onset of clipping. Gain is automatically reduced
without audible artifacts to prevent clipping distortion.
on page 7.
XPA U 3502 • Introduction 2