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INSTALLATION STEP 5
WIRING
POWER AND GROUND
To assure maximum output from the Reference705s, use high quality, low-loss power and
ground cables. The Reference705s will accept up to 4 gauge power and ground cables, which
is the only size recommended.
For system
examples and
diagrams, see pages
18 - 21.
COHERENT STEREO™ / BRIDGED MONO
The stereo channels of the Reference705s have the ability to operate in either of the following
modes:
Coherent Stereo with identical left and right stereo channels for maximum fidelity.
Bridged Mono for dedicated single channel operation; ideal for using the Reference705s in 3-
channel operation. It is also used when large amounts of power are necessary for single
speakers. In bridged mono, only the right channel input (per pair of channels) is active.
INSTALLATION STEP 4
In bridged mono, only the right channel
input is active.
Read this, or sparks will fly!
The Soundstream REFERENCE amplifiers have extensive internal power supply capacitance, called
the Ultra-Low ESR Capacitance Bank. Multiple small input power capacitors act as an internal
"stiffening capacitor". Because of the large amount of internal capacitance, there may be a sizable
spark when connecting the power and ground lead to the amplifier for the first time. In order to charge
the capacitor bank without a spark, we suggest you do the following:
1. Connect the +12 volt cable to the amplifier and to the battery.
2. Connect one end of the ground cable to the chassis of the vehicle.
3. We have supplied a 150 ohm, 2 watt resistor with the amplifier. One leg of the resistor has been
connected to the ground terminal of the amplifier.
4. To charge the capacitor bank, touch the loose end of the ground cable to the open leg of the
resistor for at least 45 seconds.
5. Remove the resistor, and connect the ground wire.