1. DL manuals
  2. Zapco
  3. Amplifier
  4. ST-1B
  5. Owner's Manual

Zapco ST-1B Owner's Manual

Manual is about: ST-B series

Summary of ST-1B

  • Page 1

    1 st-b series owner’s manual before operating the unit, please read this manual throughly and retain it for future reference..

  • Page 2: Mission  Statement

    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 enhanc...

  • Page 3: Table Of Contents

    1 table of contents before you start your installation ................................................................... 2 planning your power connections .................................................................. 3 wire size ...................................................................

  • Page 4

    2 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 i...

  • Page 5

    3 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. The st-b amps a...

  • Page 6: Wire Size

    4 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...

  • Page 7

    5 note: it takes lots of current to make lots of power! Remember! An electrical circuit is just that... A complete circuit. For current to travel, you must complete the circuit from the positive terminal to the negative terminal (which is connected to the vehicle frame). So what ever gauge wire you ...

  • Page 8: St-2B Input/controls Ends

    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. 6 1• speaker level input plug for oem hookup 2• rca inputs from an...

  • Page 9: St-4B Input/controls Ends

    7 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. 3 4 2 5 9 7 8 12 1 6 10 11 13 1• speaker level input plug for oem hookup 2• front crossover function selector for full range of high pass 3• front high pass fre...

  • Page 10: St-1B Input/controls Ends

    8 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 2• rca outputs 3• variable gain control (set to minimum before initial turn-on) 4• crossover f...

  • Page 11: The Very Basics

    9 speaker wiring of the st-b amplifiers the very basics • no speaker wires can be shorted to, or touching either ground or each other. This will put the amp into protect and may damage the amplifier • when bridging the left and right channels of any st-b amplifier, you use the left channel (ch1) pos...

  • Page 12: 3Ch Mode

    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 yo...

  • Page 13: St-4B Speaker Wiring

    All speakers 2Ω min 11 st-4b speaker wiring 4ch mode 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 cre...

  • Page 14: 2-Way Active System

    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. 5ch system the 5-speakers system requires a...

  • Page 15: St-1B Speaker Wiring

    13 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. Technical specifications 2Ω min st-2b power @ 4Ω: 2 x 65 watts power @ 2Ω: 2 x 90 watts power @ 4Ω bridged: 180 watts thd @ rated p...

  • Page 16: Modesto, California Usa

    1 modesto, california usa since 1974 zapco.Com.