10
SHELF MOUNTING
If shelf mounting, attach the four included feet by
screwing them into the threaded openings, no tool is
required.
SYSTEM EXAMPLES
Installation Steps With A Single Audio Source
1. Once mounted in a rack or on a sturdy shelf, make
sure it is in the OFF state. The rear panel power
switch should be in the down position.
2. Decide on the appropriate Power Sensing Mode:
voltage, audio signals or the ‘always on’ Off position
(such as for the passing paging or doorbell chimes).
3. Set the Sense DIP switch accordingly.
4. If using the voltage trigger feature, connect a two-
conductor wire from the 12 volt output of a zone
preamp or DC power supply into the ‘V Trigger’
inputs.
5. Connect a pair of RCA cables from the single source
into the Left and Right Audio Inputs for Bus A.
6. Set the Input Assignment DIP switches to the Bus A
inputs, alternating between left channel and right
channels.
7. If using the Bus Inputs along with a passive woofer/
subwoofer (ex: VP85RW) in a zone, connect a single
RCA cable from the SUB OUT on the amplifier to the
amplifier driving the woofer. The audio output of the
SUB OUT is low pass filtered, so the amplifier driving
the woofer does not have to perform this function.
See section ‘Using The Subwoofer Line-Level Output
Feature’.
8. Connect 14/4 speaker wire from the remote zones to
their dedicated Speaker Output Block Connector on
the amplifier.
9. If the AC cord is disconnected, then reconnect it.
10. Push the power rocker switch up to the ON position.
11. With the source volume turned down to a low,
speaker friendly level, turn on the amplifier and play
music. If you do not hear any sound, refer to the ‘No
Audio’ section of the troubleshooting chapter.
12. Follow the steps in the chapter entitled, ‘Protecting
Speaker from Becoming Damaged’.
Figure 12: Rack Ear Front Mounting 8-50
SIDE VIEW RIGHT
FRONT VIEW
EQUIPMENT RACK MOUNTING
The amplifier ships with two short rack ears (left and
right) that attach to its sides. Unscrew the two Phillips
head screws found on each side of the left and right
forward section of amplifier. Use these screws to connect
the included rack ears to the amplifier. The rack ears are
unnecessary for shelf mounting.
Rack Ear Configuration Options
The amplifier chassis has threaded inserts on the sides to
accept mounting of the ears in the designated locations:
Front:
Standard rack mounting
Middle Up:
Under side mounting applications
INSTALLATION STEPS WITH FOUR
SOURCES
1. After mounted in a rack or on a sturdy shelf, make
sure it is in the OFF state. The rear panel power
switch should be in the down position.
2. Decide on the appropriate Power Sensing Mode:
voltage, audio signals or the always on ‘OFF’ position.
3. Set the Sense DIP switch accordingly.
4. If using the voltage trigger feature, connect a two-
conductor wire from the 12 volt output of a zone
preamp or DC power supply into the ‘V Trigger’
inputs.
5. Connect a pair of RCA cables from each stereo
source into their dedicated local source inputs.
6. Set the Input Assignment DIP switches to local. If
paging or door chimes are not used, proceed to step
8.
7. If providing doorbell chimes and/or paging into the
amplifier, run a line level cable from the door chime
generator’s audio output into the Bus A input. If
also providing paging, run a line level cable from
the paging system’s line-level output into the Bus B
Input. Set all the Input Assignment DIP switches to
ON. These connections and DIP switch setting will
pass audio, door chimes and paging at all times.
8. If using the Bus Input source along with a passive
woofer/subwoofer (ex: VP85RW) in a zone, connect a
single RCA cable from the SUB OUT on the amplifier
to the amplifier driving the woofer. The audio output
of the SUB OUT is low pass filtered, so the amplifier
driving the woofer does not have to perform this
work. See section below, ‘Using The Subwoofer Line-
Level Output Feature’.
9. Connect 14/4 speaker wire from the remote zones to
their dedicated Speaker Output Block Connectors.
For example, if the audio source for the kitchen is
connected into channels one Left and one Right RCA
Figure 13: Rack Ear Middle Up Mounting 8-50
