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sub bass and higher frequency speakers in a system. Adjust this control for best audible results. Set
it to MASTER for single RS amplifier, or first of a multiple RS amplifier systems. In multiple RS
amplifier systems, set this switch to SLA VE for any amplifiers slaved off a master. Once the system
is operational, the first thing to do, is set all crossover points to approximate settings. In the case of
the basic system described on Page 6, start off with the RS amplifier Low Pass filter, and the highs 2
channel amplifier's internal crossover at 100 Hz or so. Set all equalizer controls to 0 dB Now you
should set the amplifiers LEVEL adjustment. The knob accessible on the top of the amplifier marked
Input Level adjusts the input sensitivity from 200mV to 9V olts. T o adjust the input sensitivity, turn
the control using a small flat head screwdriver fully counter clock wise to the 9volt minimum
position. Do not apply any pressure while turning as this might break the control unit. Adjust your
radio volume level to maximum volume. Now turn the level control on the amplifier clockwise
towards 200mV marking and until audible distortion occurs. When you begin to hear any distortion
in the sound back down one notch and your amp is set. It is helpful to have a second person to help
you set the gain. When setting up a multiamp system, set each amplifier 's gain separately. Start of f
with the bass amplifier, then adjust the highs amplifier's level control to match. Once you're satisfied
with the level control settings, use the equalizer controls to adjust the system tonal level for
personal preference. Keep in mind that after equalizing, you may have to go back and reset the level
controls. The level control of any car amplifier should not be mistaken for a volume control.
It is a sophisticated device designed to match the output level of your source unit to the input level
of the amplifier. Do not adjust the amplifier gain to maximum unless your input level requires it. Y
our system can also be extremely sensitive to noise when the LEVEL is set to maximum and does not
match your input signal. The gain adjustments need to be made only once when first setting up the
system. If your unit has been professionally installed please do not change the gain settings set by
the installer, he is the professional. Boom ! Harder Connect the speaker as shown, with the link
between the negative speaker terminals of the two amplifiers. Connect the ground terminal with as
short a piece of cable as possible to the nearest metal chassis point. Harder Pm2 Cable See the
diagram on the right. Please note that for this type of setup, the speaker phase on every alternate
amplfier MUST be reversed in order to keep the acoustical phase of all speakers in the system in
phase with each other. See the diagram below. The first, or master amplifier switch in these
arrangements will of course act as the master in all respects. It will accept the input from the source
via RCA cables, and its level control, crossover and filters, as well as remote control, if connected,
will control all slaves. Harder Pm2 Cable Pm2 Cable Pm2 Cable Pm2 Cable Pm2 Cable Lower
impedance loads will cause overheating and may damage the amplifiers. Boom ! Harder If the
amplifier goes in to diagnostic with nothing connected to it, and you are sure of proper power and
ground, please contact our service dep artment for further help ay 732 370 5400. A car stereo
system consists of many dif ferent pieces of equipment connected together, and a logical process of
elimination will find the problem area, by isolating sections, and checking them one at a time. Before
following the instructions below, check and double check all wiring and connections.
The following tools will help in finding problems A general purpose multi meter, capable of checking
volt age and resistance, is perhaps the most useful piece of test gear that any installer can own. Y ou
may also need a test speaker, and a head unit, as these will be handy for temporary connection for
checking purposes when you are working in the trunk of the vehicle. This is probably the most
perplexing problem to find. 1. Reduce the amp gain to 9 volts and unplug the RCA cables and
speakers from the amplifier. 2. Check with your multi meter that each amplifier in the system has
proper 12 volt DC supply on it's power terminals. 3. Also check that the remote turn on terminal has
12 volt on it. If all seems well, and the amplifier power indicators light up without any diagnostic
light 4. Connect the head unit RCA directly to the amplifier eliminating any signal processors which
you may have installed in between the head unit and amplifier and turn on the system. If the power
LED is on with no Diagnostic LED continue 5. Connect each speaker one at a time to see which