Rockville dB12, Owner'S Manual

Page: 7 / 32

7
The remote turn on connection is located on the barrier strip next to the power and ground connections. This connection is responsible for turning the amplifier on and off with the rest
of the system. A smaller gauge wire can be used to make this connection to your radio’s power antenna lead. Should your system not have any turn on leads, you can wire the remote
terminal to an accessory lead, which turns the amplifier on with your car’s ignition.
The majority of the dB Series amplifers are supplied with built-in fuses. Never replace the built in or supplied external fuse with one of a larger value.
We suggest you construct a red wiring harness with 2 additional fuses. One fuse should be located near the car battery. This fuse near the battery offers protection against damage
from short circuits to the car chassis between the battery and the amplifier. A second fuse closer to the amplifier offers additional safety to the amplifier itself. This fused red power wire
should be attached to the amplifier power terminal marked
+12V . The wire harness should be made of red primary cable of at least 8 gauge for the dB12 and at least 4 gauge for all
other larger models. The harness should terminate in a large ring terminal for connection directly to the positive terminal of the car battery.
A second black color wire of equal gauge should be used as a ground connection to a welded chassis member. When connecting the ground wire make sure that there is no paint or
other insulator blocking a good ground connection. When installing multiple amplifiers, mount them in close proximity so that they can all share the same ground point. Attach the black
ground wire to the amplifier screw terminal marked
GND . Keep ground and power cables as short as possible.
We have received amplifiers back to our service department with melted power/ground terminals. The cause of this is a bad ground connection. When there is a lack of good ground,
heat builds up at the weakest point which happens to be the contact screw of the amplifier terminal. Over time the heat generated will begin to melt the terminal. It is a good practice
to feel the power and ground wires with your hands, near their amplifier connection after having played the amp for a while. If the wires feel hot to the touch you probably have a bad or
loose connection. If you are sure of your connections and the wires still feel hot to the touch, you should upgrade the gauge of wire to next heaviest gauge.
Connections can work loose due to vehicle vibrations. We recommend tightening all power and ground connections in the system wiring as well as on the amplifier terminals periodically,
at least once every 2 months.
Wiring
BATTERY
FUSE
GROUND
REMOTE
TURN ON
Terminal of head unit. Do not connect
when using High Level Inputs.