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Table of Contents
Related Manuals for zapco ST-2B
Summary of Contents for zapco ST-2B
- Page 1 ST-B SERIES Owner’s Manual Before operating the unit, please read this manual throughly and retain it for future reference.
- Page 2 (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.
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Page 3: Table Of Contents
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. -
Page 4: Before You Start Your Installation
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. -
Page 5: Planning Your Power Connections
Planning your power connections The power end plates of the Zapco ST-B amplifiers carry the power connections and the speaker connections and vary somewhat by the number of channels. For example, the power end of the ST-4B below has (of course) speaker connections for four channels. -
Page 6: Wire Size
Some words about Power and Ground Note: The second most common cause of underperforming amplifiers is insufficient power current or a pour power connection. The most common cause of underperforming amplifiers is insufficient ground current or a bad ground connection. 12-volt current: Battery Power works only if it travels in a complete circuit from the battery positive terminal to the battery negative terminal. -
Page 7: Mounting Your St-B Amplifier
Mounting your ST-B amplifier Mounting your Zapco amplifier is easy. Just keep in mind a few guidelines: • The amplifier can be mounted in any direction, on wood, metal, or carpet •... -
Page 8: Inputs And Controls
ST-2B Input/Controls Ends The Input ends of the ST-2B amplifier is where you find the signal input connectors,the pass through outputs, the crossover controls. For High Level (speaker level) you also find the port for the input plug. 1• Speaker level input plug for OEM hookup 6•... -
Page 9: St-4B Input Ends
ST-4B Input/Controls Ends The ST-4B has similar functions as the ST-2B but the 4 channel layout puts the controls in different positions. 1• Speaker level input plug for OEM hookup 7• Rear channels RCA inputs 2• Front crossover function selector for full 8•... -
Page 10: St-1B Input Ends
ST-1B Input/Controls Ends The ST-1B has similar functions as the other ST-B amps but the 1 channel layout puts the controls in different positions. Plus the ST-1B has a remote control port. 1• RCA inputs 5• Low Pass frequency control 2•... -
Page 11: Speaker Wiring Of The St-B Amplifiers
A simple 2 speaker hookup for a right and left stereo pair. Speakers can be 2Ω or 4Ω. Single Channel Mode The ST-2B can be used in bridged mono mode to drive a single speaker or a woofer. NOTE that in bridged mono mode the speaker load must be 4Ω minimum. - Page 12 3Ch Mode It is possible to run the 2Ch amps in “3-Channel” mode by running a pair of speakers for the mids and highs on left and right channels, and at the same time run a woofer bridged between the L+ and R- terminals as shown. However, since each channel will see 1/2 the impedance of the woofer you must use a woofer of no less than 4Ω.
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Page 13: St-4B Speaker Wiring
ST-4B Speaker Wiring 4Ch Mode All speakers 2Ω Min If using coaxial speakers, consider using the HP filters at the lowest setting to keep deep bass from damaging the speakers. High Power 2Ch Mode Similar to bridging a stereo amp to a mono woofer, you can use the 4-Ch amp in a dual mono mode to create (in this case) a stereo amp with 190 watts RMS/ch. - Page 14 2-way Active System Using the built-in active crossovers of the ST-4B, you can easily create an active 2-way system with mid/highs on the front channels and bass on the rear channels. Below is an active system with a bridged subwoofer on the rear channels. Highs 2Ω...
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Page 15: St-1B Speaker Wiring
The ST-1B has two + and two - terminals so you can hook up one woofer or two. One woofer can be 2Ω minimum. Two woofers must be 4Ω minimum each. 2Ω Min Technical Specifications ST-2B ST-4B ST-1B Power @ 4Ω: 2 x 65 watts Power @ 4Ω: 4 x 65 watts... - Page 16 Modesto, California USA Since 1974 zapco.com...