5
Each time the amplifier is initially plugged in and the main
power switch is turned on, the protection LEDs will light for
approximately 3 seconds while amplifier circuitry is stabilizing.
This prevents spikes and thumps from getting to speakers. Any
time the protection circuits are triggered, turn the main power
switch off before troubleshooting for shorted output connections
or faults with source components.
Bridging Channels
Bridging a pair of 30W channels to yield one 60W channel is a
simple operation of moving the toggle switch from the
NORMAL position to the BRIDGED position. This operation
subsequently disables the routing/switching function of the
channel directly below the bridged channel. This would apply
to even numbered channels (2,4,6,8,10,12). The dip switch
controls for the BRIDGED channel is directly related to the odd
numbered channels(1,3,5,7,9,11). The bridged channel would
then use both positive speaker binding post connections (red +
terminals) to connect to speakers. (8
Ω
speakers only) Do not use
double banana plugs for bridged connections.
INSTALLATION SAFETY
When installing the Sonamp 1230, basic safety precautions
should always be followed to reduce the risk of fire,
electric shock, and injury to persons, see the following:
1. Read and understand all instructions.
2. Follow all warnings and instructions in this manual and
marked on the product.
3. Any service or repair required must be performed by qualified
factory authorized personnel.
4. Do not install this product in a high humidity environment
or near water, for example a wet basement, wet bar, or
swimming pool.
5. Do not defeat the ground pin on the AC cord.
6. Disconnect the AC power to Sonamp® 1230 when wiring or
reconfiguring connections.
INSTALLATION EXAMPLES
Diagrams of these examples follow later in this manual. The
following six system examples are only the beginning, with
some imagination, many other variations are possible.
Basic Background Music System (Figure 1)
Features
• 6 Room
• Common Music Source
• Passive Volume Control at each Zone
Perhaps the simplest configuration of the Sonamp 1230 uses a
single source preamplifier into six sets of stereo speakers, one
pair of speakers per room. The factory default rear panel DIP
switches and toggles are set for this application. This is a single
zone system. Note that each room may have a volume control as
well as a preset maximum volume level (using the 1230 volume
controls). This capability allows tailoring sound reproduction
to the size and use of each room.
If one room requires more power, a pair of high output
channels may be configured by bridging two pairs of channels.
Commercial Background Music System with Paging Capabilities
(Figure 2)
Features
• 6 Room
• Common Music Source
• Two Zones with AUX Input for Paging Function
Adding a microphone preamplifier connected to the AUX
input provides the capability of mixing the stereo source
with paging. For maximum flexibility, each channel is
individually configurable to use or ignore the AUX input.
Use an AL1/S to mute the audio inputs during paging.
A great application for restaurants, nightclubs,offices,etc.
Note: If possible, adjust the microphone preamp volume level
slightly higher than the other input source.
Multiple Zone Music System (Figure 3)
Features
• 5 Zones are fed from Main System
• 1 Zone is a Dedicated system with IR Control of Volume and Input Selections
Using the Sonance Navigator Harbor, a matrix preamplifier
capable of directing signals to multiple amplifier inputs, or
employing several discrete preamplifiers, the Sonamp 1230
may be configured to provide different program material to all,
or some zones. The main input can drive any channels not
individually connected to sources.
Home Theater and Music System (Figure 4)
Features
• 10 Channels Bridged to 5 channels for 60 watt per channel Theatre Output
• 2 Channels for Second Room Output on Receiver or Separate Input Source
A five channel surround sound system may be configured
from five channels. The five bridged channel configuration
leaves two channels available for stereo reproduction in
other zones.
In larger home theaters where high listening levels must be
supported, every channel pair may be bridged, creating six
60 watt channels to support speakers in the LCR (left, center,
right), surround, and subwoofer roles.
A surround sound receiver may be configured to provide
source signal to the Sonamp 1230 for one room, while
independently driving another set of surround speakers with its
internal amplifier.
