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Control Definitions
Alrighty, here comes the fun stuff. We’re going to break this down to it simplest form so that there is no way you
can possibly do any damage in the installation process to your audio system. We’re going to explain in detail how every
single knob and switch work rather than turn you loose on a sophisticated amplifier and have problems. READ EVERY-
THING! Trust us, it’ll be worth it… Before you do anything, undo the ground cable from the battery.
Power Terminal Block
GND – This is the Ground connection. Bolt the Ground cable to a bare metal part of the chassis/frame. Do NOT
us self-tapping screws or seat/seatbelt bolts!
+12V – This is the Power Connection. This cable gets connected directly to the battery. You MUST use a fuse
holder or circuit breaker within 18” of the battery. All cables ran through the firewall must be protected by a rub-
ber or plastic grommet. If you have multiple amplifiers, the main fuse or circuit breaker at the battery should be
the sum of all fuses or slightly less.
REM – This is the remote Turn-On connection. Connect to the amplifier output or power antenna output of the
source unit. If the unit does not have a switched +12V output, you can use another switchable +12V.
Speaker Terminal Block
This is the Speaker(s) Connection. All components, coaxials and subwoofers connect here.
Crossovers
These controls allow you to pass and block frequencies to each driver. This is one of the most important parts
of tuning any audio system.
LOW PASS – This control allows you to pass only frequencies lower than the frequency you choose to the driv-
ers. For example, if you are powering a sub woofer and you choose 70Hz, then only 70Hz and lower tones will
be passed through to the subs while all unwanted higher frequencies above 70Hz will be blocked.
HIGH PASS - This control allows you to pass only frequencies higher than the frequency you choose to the driv-
ers. High Pass crossover filters below 50Hz are also considered “subsonic” filters.
Multiplier Switches – Sometimes you may need a range that is not within the range supplied by the control po-
tentiometer. In this case, if the amplifier has a multiplier switch, the range can change to accommodate your
needs. For example, let’s say you have a 4 channel amplifier and you want to put the tweeters (1”) on the front
channels and the midbass (6.5”) on the rear channels, and use all electronic crossovers. You can set the High
Pass for the tweeters at 4kHz. The low pass, if it as two ranges, may be from 50-800Hz which is not high
enough. By using the multiplier switch, that same control can change the range from 50Hz-800Hz to 250Hz-
4kHz. If this doesn’t make sense and you do not understand frequencies clearly, PLEASE TAKE YOUR AMP
TO A PROFESSIONAL SOUNDSTREAM DEALER!
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