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. (8Ω 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.
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