Overview:
The Russound X225 is a dual source 2-channel power amplifier. The
X225 features volume and balance controls, as well as A/B speaker
switching on the front panel.
Power Output:
The X225 is a Class D amplifier rated at 225 watts per
channel into 4 ohms, and 150 watts per channel into 8 ohms. Both
amplifier channels can be bridged for a higher power mono output of
470 watts into a single 8 ohm load (The Stereo/Bridge switch on the
back panel should be in the Bridge Mono position when bridging.)
Signal Sensing
Inputs: The X225 can be turned on manually or automatically
by setting a switch on the rear panel. For manual power, the front
panel power switch turns the unit on or off. When set to automatic,
the unit will power on when music is sensed on either RCA input
connector. Once the signal is no longer detected, the unit will
automatically shut off. The signal sensing feature also allows you
to switch from one input source to another by turning one of the
connected components on or off. Signal sensing inputs allow the
amplifier to easily integrate with multi-room audio systems and home
theater components.
Line Level
Output: In addition to the line level inputs, the X225 has
a stereo RCA line level output. This output allows you to send the
audio of the selected source to another amplifier.
Speaker Level
Signal Inputs: If you have a source that is only available
as a speaker level signal, you can connect it to the amplifier via
the spring clip input terminals on the back panel. Only one set of
speaker level inputs can be utilized and assigned by the selector
switch. You can set the speaker level input as the primary or
secondary signal.
12V Trigger:
On the back panel, there two 3.5mm minijacks for a 12-volt
trigger input and a 12-volt (100mA) trigger output. These allow the
amplifier to be activated by, or to activate, other devices with a
mini-plug cable. The trigger delay can be set between 3 and 15
seconds.
Thermal
Protection: The amplifier is designed with a special
circuitry that protects the unit under a thermal overload condition.
Thermal protection mode will only engage when the unit has been run
at high volume for extended periods without adequate ventilation
and/or when speaker impedances are below the minimum levels. For
proper ventilation, it is recommended that the amp have a minimum of
2" of clearance around each side of the unit.
Short Circuit
Protection: In addition to thermal protection, the X225
also has special circuitry to protect the amplifier from
short-circuit conditions. This can be caused by a faulty speaker or
when speaker wires come in contact with each other. When this
condition occurs, the amplifier will shut down until the short
circuit is corrected
