Installation manual

Connecting the Amplifier
Once the amplifier has been correctly mounted the electrical connections can now be
made. The first step is to connect the loudspeakers. Using the appropriate size of wire
(we recommend a min of #14) connect the speakers as shown in later diagrams,
depending on which amplifier(s) are being installed. The next step is to connect the line
inputs using high quality RCA-RCA cables. The source to which the line inputs are
connected depends on the amplifier type and the particular installation. Again refer to
later diagrams.
The next step is to connect the power inputs. The first is the ground wire. This wire is
connected to the (-) connection on the 3 terminal power connector. Using #8 wire or
larger(#4 max) insert one end into the connector’s GROUND terminal after stripping off
about 19mm (0.75”) of insulation. Trim the wire to a maximum length of 1 metre (39”) this
ground wire (normally BLACK in colour) is then crimped (and preferably soldered) into an
appropriate size ring lug. This lug is then bolted to the chassis of the car (normally in the
trunk). The hole to which the lug shall be bolted must be rust and paint free. It is also a
good idea to use a star washer between the lug and the chassis of the vehicle. We prefer
the use of a machine bolt and nut rather than a self tapper. The torque that the machine
bolt can exert is greater than that of a self tapper and due to the large currents flowing
through this ground connection the contact resistance shall be lower with the machine
screw.
Next is the remote turn on wire. This is normally connected to the remote output of the
head unit. Using #14 wire, stripping one end to 19mm (0.75”), insert one end into the
smaller centre hole of the power connector. Run this cable to the head unit’s location and
connect to the “remote out” terminal of the head.
Last is the +12volt connection. Using #8 (#4 max)or larger, strip the wire to 19mm (0.75”)
and insert in to the hole marked BATT (+) on the power connector. Run the cable (away
from all audio cables) to the location of the vehicle’s battery. At the battery location install
the a fuse holder no further away from the battery (+) terminal than 300mm (12”). Insert
this end of the +12volt power cable into the fuse holder. Making sure that the fuse is
removed, connect the other end of the fuse holder to the battery’s (+) terminal using
appropriate high quality battery connectors. Insert the supplied fuse. DO NOT
OVERFUSE as this can be a fire hazard.
The power connector on our amplifiers can accommodate wire with a copper diameter of
up to 7mm (0.275”).
Please be sure to use a 0.25A fuse at
the head. This fuse will blow if any portion of the remote wire is accidentally shorted to
chassis ground.
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