zapco ST-2B, ST-1B, ST-4B Owner's Manual
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ST-B SERIES
Owner’s Manual
Before operating the unit, please read this manual throughly and retain it for future reference.
MISSION STATEMENT
Committed to Excellence
ZAPCO is dedicated to the pursuit of audio fidelity. Our prime objectives are to
design and manufacture audio products of unsurpassed quality, to provide
unparalleled support and service for these products and to conduct business
in a manner that will enhance the quality of life for all involved.
Experience
(Knowledge from doing)
There is absolutely no substitute for experience; that is a simple fact of life.
Another simple fact is that ZAPCO has, for over forty years, been the leader in
defining quality standards for the car audio industry.
These years of experience have led to a thorough understanding of the
challenges that are unique to the world of car audio. ZAPCO's relentless quest
for sonic purity consistently yields imaginative designs that utilize the most
innovative technologies. The resulting products set the criteria by which all
others in the industry are judged.
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Table of Contents
Before you start your installation ................................................................... 2
Planning your power connections .................................................................. 3
Wire size ................................................................................................. 4
Mounting your ST-B amplifier ......................................................................... 5
Inputs and Controls ......................................................................................... 6
ST-2B Input Ends .....................................................................................6
ST-4B Input Ends ..................................................................................... 7
ST-1B Input Ends ..................................................................................... 8
Speaker Wiring of the ST-B Amplifiers ............................................................ 9
ST-2B Speaker Wiring ............................................................................. 9
ST-4B Speaker Wiring ............................................................................. 11
ST-1B Speaker Wiring ............................................................................. 13
Technical Specifications .................................................................................. 13
The ST-B Series. Great sound for every day use.
ZAPCO has a reputation for sound reproduction and quality that is unsurpassed.
It is our dedication to sonic purity and our passion for performance that built
Zapco's reputation. With all the new amps coming into the market, not one
has been any threat to Zapco's standing as the premium amp and processor
line. Just check the audio competition scene and the audio forums.
But not everyone wants to compete. The question was this: could Zapco put
it's 40-years of audio experience to work to develop an amp for every-day
use? An amp that all can afford but that will stay true to the Zapco heritage for
sound and reliability? Absolutely! We can and we have! The new ST-B amps
are a testament to the fact that you can build a quality product with great
sound in an amplifier for every day use.
With the Studio-B amplifiers Zapco brings the sound quality and reliability that
built the Zapco legend to an amplifier that everyone can afford.
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Before you start your installation
ZAPCO highly recommends that a fuse or circuit breaker be placed within 18"
of the battery. Although you will add a fuse or fuse block near the amplifier it
is still a possibility that a pinched power wire between the component fuse
and the battery could result in a short, or even a fire. The protection device
should be placed where it can be accessed easily and all wiring should be
routed safely and correctly according to the following guidelines:
Do not run wiring close to hot or spinning objects.
Always use wire grommets when routing wire through the firewall or any
other metal panels.
Make sure that the potential for pinched wiring is avoided by routing all wires
away from moving hinges and seats. This also includes brake, gas and clutch
pedals, hood and trunk hinges, etc.
Continuous exposure to excessive sound pressure levels may cause permanent
hearing loss. ZAPCO strongly advises that you use common sense when setting
volume levels. If you experience ringing in the ears, it could cause permanent
hearing damage!
When connecting our amplifiers to pre-wired stock speakers, care must be
taken that there are no common connections between left and right speaker
wires, i.e. two or more speakers using the same ground connection (very
common in pre-85 cars), as this will cause the amplifier to go into immediate
protection or may cause damage to the amplifier. Output connections are not
common chassis ground. Please follow the hookup instructions in this owner's
manual. Any questions should be directed to your local ZAPCO dealer.
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Planning your power connections
The power end plates of the Zapco ST-B amplifiers carry the power connecons
and the speaker connecons and vary somewhat by the number of channels.
For example, the power end of the ST-4B below has (of course) speaker
connecons for four channels. The ST-B amps all have on-board fuses and the
fuse rang as printed above the fuses. The main 12-volt power input, the
12-volt turn-on wire, and the main Ground connecon are common to both
models.
• The main power input must be connected the vehicle baery's posive
(+) terminal, and a main system fuse should be placed close to the baery
• The main ground or negave connecon must be securely aached to
bare metal at the vehicle frame, or other heavy chassis component with
a direct connecon to the frame
Note: Seat bolts and seat belt bolts are NOT good ground points
• The terminal between the main power and ground is the +12 turn-on
input and can be connected to the head unit turn-on output wire.
If none is available it can be connected to an accessory (ACC) terminal.
You should avoid using any ignition-on (IGN) wire, as they can be noisy
Turn-on trigger wire
+12 volt at Baery posive terminal Ground to chassis
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