RMA 500.1 & RMA 500.4 Amplifier Owner’s Manual
Rev. 09-Mar-10
Pg. 4/8
Bass Boost
Both the RMA 500.1 and the RMA 500.4 amplifiers have an adjustable bass boost. On the 4 channel
RMA 500.4, the bass boost will be directed only to the front speakers. The RMA 500.1 includes a
remote gain that can be plugged into the amplifier to allow adjustment of the bass without accessing the
amp. Begin your adjustment at low volume. If you do not hear any improvement then the woofer does
not need any boost.
Use Bass Boost carefully - the response on the power output is tremendous!
Speaker Outputs
The RMA 500.4 is a multi channel amplifier design. Meaning it has more than one channel of speaker
outputs. It is equipped with a block style terminal for speaker connection. Make these connections
carefully and neatly. Strip your wire back ½” and twist the exposed leads. Insert them into the appropri-
ate spot on the block terminal. Make sure that there are no loose or frayed strands of wire sticking out.
If a wire comes in contact with another wire, the amplifier will go into protection mode. Fasten the wire
in place with a small termination (bladed) screw driver.
Know your total ohm load before you make any connections.
Installation Instructions
1.
Disconnect the negative cable from the boat battery. Tape up the end so it is isolated from the
battery.
2.
Run a red 4 AWG wire from the battery to the amplifier. Plan this part of the installation carefully.
This cable will carry a very high current. If it should short to any metal and is not properly fused
it could catch fire.
3.
Connect an inline fuse holder to the power cable no further than 18” away from the battery con-
nector terminal on the other end of the cable. The closer this fuse is to the battery the better. If
one amplifier is being used a 60 amp fuse needs to be installed in the fuse holder. If two ampli-
fiers are being used the fuse needs to be capable of handling the total current load of all ampli-
fiers connected. Do not install the fuse until the end of the installation.
4.
Run the black 4 AWG ground wire directly to the negative (-12V) pole on the battery.
5.
Run the speaker wires from the speakers to your amp mounting location. Leave some extra
wire length if possible.
6.
If you have not already mounted the amplifier, do so now.
RMA 500.1
RMA 500.4
RMA 500.1
RMA 500.4
