Specifications

SYSTEM PLANNING
Passive X-over
Full·Range
Subwoofer
Receiver
Supplementary subwoofer system
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Before wiring up an audio system that may not achieve the
sound quality you want, be sure to choose a system
concept that fits your listening requirements. Basic
systems, a receiver with internal 4x20 watts and 4 coax
speakers, are adequate for many listeners. But, when you
want to really "feel" the music, you will need some kind of
subwoofer amplifier/speaker combination. Although many
people might jump into
an "add-on" amplifier to power to
rear coaxial speakers, a better choice is usually a
subwoofer amp/speaker system that supplements the
existing 4 speaker system
as shown in the adjacent
drawing. Such a system provides a surprising
improvement
in sound quality due to the usually dramatic
increase
in bass response.
The next dramatic step up
in performance is with a "multi-
channel" system that offers more dynamic range
in the
mids and highs due to higher power plus more bass
response due to multiple woofers and/or more power. But,
with such a system, the stereo image and overall listening
experience usually becomes much more life-like due to
better tonal quality midrange/tweeter speakers and usually
better placement.
To build such a system though, complexity goes up due to
the addition of passive or active crossovers which take
time to install and may inject noise into the system due
to
potential noise signal pick up. The results though of such
a system can be dramatically pleasing.
Sub Amplifier (2x125 W) Subwoofers
High performance multi-channel system
INSTALLATION TOOLS
For most installations, simple hand tools are adequate to install an aftermarket amplifier. Depending upon the
mounting locations used, you will need power tools for drilling and cutting plastics and metal. A good starting list is
summarized below:
• Tape measure and ruler
• Marking pen and starting punch
• Phillips and flat blade screwdrivers (small and medium sizes)
• Nylon wire bundle ties
• Pliers: standard vice-grip and needle nose styles
• Light-duty trim pry-bar for removing door trim
• Cutting shears or nibbling tool for cutting thin and medium gauger metal
• Wire cutters, wire strippers, electrical tape, crimping pliers and appropriate crimp-on
terminals
• Power drill with appropriate sized drill bits
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