COHERENT STEREOIMIXED-
MONO/BRIDGED MONO
The REFERENCE604 has the ability to operate in any of the following modes:
Coherent Stereo with
identical IeR and right stereo channels for maximum
fidelity. Best choice for satellite speakers. Use this mode unless Mixed-Mono
is necessary.
Mixed-Mono
to
in order
drive stereo and mono simultaneously; works well for
center channels. It can be used anytime you need a summed mono channel.
Somewhat sacrifices sonic accuracy as additional circuitry is introduced to one
Mixed-Mono, the left channel is inverted; see
channel. in
on the bottom of the amplifier.
Bridged Mono
for dedicated single channel operation: ideal for driving
single speakers. In
channels) is active.
BRIDGED MONO
COHERENT STEREO
POWER AND GROUND
To assure maximum output from your REFERENCE604, use high quality. low-
loss power and ground cables. The REFERENCE604 will accept up to 4 gauge
power and ground cables. Using a 4 gauge cable is ideal, however, 6 gauge is
acceptable when the amplifier is mounted near the power source. 4 gauge is
capable
get into the amg, the more you get ootl
below
diagram
CIRCUIT BREAKERS/FUSES
EXTERNAL
Like all car audio amplifiers, the REFERENCE604 must be fused near the
battery. A fuse or circuit breaker must be located within 18" of the battery. This
will prevent a fire in the event of a shorted cable. The value of the circuit
breaker or fuse should be 70 - 100 amps.
INTERNAL
The REFERENCE604 is fused internally with two 30 amp automotive-type
fuses. In the event of blown power supply fuses, the "Fault" indicator on the
front panel will light. The fuses are accessible via a plastic plug on the bottom
of the amplifier. Never replace the fuses with a higher value than what is
supplied.
REMOTE TURN-ON
Connect the 'Remote" to the turn-on lead from the source unit. When +12 volts
is received, the amplifier will turn on.
SIGNAL CABLE
Depending on your application, you may use one or two pairs of signal cables to
drive your REFERENCE604. Use a high-quality cable that will be easy to install
and has minimal signal loss to guarantee optimum performance.
Soundstream's DL.1 and SL.1 are ideal.
INSTALLATION STEP 5
of delivering more power
REFERENCE604
(4 OT 8 ga.)
This may resu/t in amplifier damage and will
11
and the more power you
Determine from the charl below the
20'
void the warranfyi
(Continued on page
12)
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