How to Guide

3
Russound A2100 Installation Manual
Introduction
The A2100 is a 2-channel digital amplier designed to be used to boost audio
amplication where needed, either as a standalone amplier, or as an addition
to a whole-house distributed audio system in order to provide extra amplier
power in larger rooms or spaces. Its space-saving ½-rack design allows for
quick installation and gives exibility of mixing and matching with other
½-rack products to save valuable equipment rack space.
The powerful 100-watt class D amplier in the A2100 is combined with
features such as 12v trigger control, audio sensing, volume gain adjustment,
and a buered line output that enables even more amplication of the same
audio signal when needed.
Product Features
Class D amplier – The cool running, low-prole, high eciency design makes
the A2100 the perfect choice for even the most space-conscious system
designs
100w per channel – A powerful 100 watts per channel are available to provide
ample power to even the largest of spaces
Loop Output – A buered loop output is available for the audio signal,
allowing additional ampliers to be easily driven from the same signal
Trigger in/out – The A2100 can be activated by a 12VDC trigger signal, and can
activate additional devices at the same time
Multiple Turn-on modes:
Always On - The A2100 is always active and ready for use
Signal-sensing – The A2100 is in a standby mode when no audio signal is
present and will turn on when an audio signal is detected
12v Trigger – Using the 12v trigger allows precise turn on/o when the
amplier is needed, keeping the unit in a power saving standby mode when
not in use
Multiple Output modes:
• 8Ω - optimized mode for 8-ohm stereo output
• 4Ω - optimized mode for 4-ohm stereo output
• Bridge – allows the use of the A2100 as a powerful, 8-ohm mono amplier
PRODUCT OVERVIEW
Removable speaker connectors – allow for quick, secure installation and
accommodate cables of up to 12 ga AWG
Cord Lock – Flip-down cord lock keeps the IEC power cord in its place,
preventing accidental disconnection when moving gear in a stack or when
pivoting a rack for service
Thermal Protection
All Russound ampliers are designed with special circuitry to safeguard the
amplier under a thermal overload condition. Thermal protection mode can
only engage when the unit has been run at high volume for extended periods
of time without adequate ventilation and/or when speaker impedances
are below the minimum levels for the amplier. If this fault occurs, turn
o the amplier, and check that the speaker impedance rating is above the
minimum rating. Also check for adequate ventilation around the amplier and
make adjustments if necessary. Once the unit has cooled to safe operating
temperatures, the amplier may be powered back on.
Protection Circuitry
All Russound ampliers are designed with special circuitry to safeguard the
amplier under a short-circuit condition. A faulty speaker can also cause a
short circuit condition. The front panel LED illuminates orange when the
amplier is in short circuit protection. If this fault condition occurs, turn o the
amplier and check speakers for short circuit conditions when appropriate.