Bazooka NOS8W - Manual (Page 11)

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antenna or power leads, or near sensitive equipment or harnesses. The
power wire carries substantial currents and could induce noise.
GROUND WIRE (NOS8A only)
The ground wire must be connected directly to the vehicle chassis near
the amplifier. We do not recommend extending the ground wire in
any installation, as this can cause unwanted ground loops.The ground
point in the car should be a piece of chassis metal that is part of or
welded to the main body of the vehicle. Painted surfaces should be
scraped or sanded clean to expose the bare metal before the ground
lug is bolted or screwed down. Cover the bare metal area with paint
or grease after you finish mounting the ground wire to prevent rust.
REMOTE TURN ON WIRE (NOS8A only)
The ORANGE wire coming out of the NOS8A subwoofer’s nozzle is the
Remote Turn On Wire. This wire must be connected to 12 volts switched
output from the radio or an accessory wire.
INPUT WIRING (NOS8A only)
Connect the low-level RCA phono jack inputs of the Amplified Bazooka
subwoofer to the source with a high quality, shielded RCA patch cord.
Right and Left RCA’s do not matter; they are summed together internally
anyway, but both RCA connections need to be made. If you are
connecting to a factory installed radio, or if your radio does NOT have
RCA outputs, you will need to purchase a high-to-low-level converter,
available at any car audio store. To avoid possible noise problems, be
sure to run the RCA cables away from all power wires and factory wire
harnesses.
SETTING THE LEVEL (NOS8A only)
The level control on the NOS8A is the “valve” at the top of the unit.
The “valve” rotates approximately 270 degrees, with the clockwise
direction being up. DO NOT OVER-ROTATE THE GAIN CONTROL.
Broken gain controls due to over-rotation ARE NOT covered under
warranty. Start with the level control turned all the way to the left
(counterclockwise). The bass should be off or very low at this point.
Turn up your head unit until the sound from the existing speakers starts
to clip or distort. This is the point in your system where you will get
maximum volume with the least amount of distortion. With the head
unit level still at this point, turn the level gain control up slowly until
the bass volume blends well with the existing high frequency speakers.
This should be the proper setting for the level gain control.