10

WIRING

POWER AND GROUND

To ensure maximum output from your REFERENCE404s amplifier, use high
quality, low-loss power and ground cables. The REFERENCE404s amplifier
will accept up to 4 gauge power and ground cables. Determine from the chart
up to 10’ up to 20’
REFERENCE404s Soundstream Power40 or
Power80
(4 or 8 ga.)
Soundstream Power40
(4 ga.)
INSTALLATION STEP 2
Amplifier Amplifier Fuse Battery Fuse
REFERENCE404s (2) 25 amp automotive 60 amp

REFERENCE404s Amplifier Fuse Values

CIRCUIT BREAKERS/FUSES

EXTERNAL
Like all audio components, the REFERENCE404s amplifier 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. See the chart
below to determine the correct fuse value.
INTERNAL
The REFERENCE404s amplifier is fused with 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. See the chart below to determine the fuse value. Never replace
the fuses with a higher value than what is supplied. This may result in
amplifier damage and will void the warranty!

11

WIRING DIAGRAM

WIRING (cont.)

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

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.
SPEAKER CABLE
The REFERENCE404s amplifier will accept up to 8 gauge speaker cable. Use
a high quality, flexible, multi-strand cable for best performance and longevity.