zapco ST-4X DSP User manual

ST-X DSP Series
Quick Start Guide
Congratulations on t e purc ase of your new Zapco ST-X DSP series product.
Please go to www.zapco.com to download t e PC Control Program. You will also find t e User’s Manual on t e web
site for download. Also, please c eck back periodically for any new updates to programs. If you are experienced
wit DSP and you want to jump rig t into t e installation and tuning, we provide t is Fast-Start s eet to give you t e
basic info you need to get up and running rig t away.
ST-X DSP - Physical Connections
1. T e amplifier RCA connectors. T e 2 extra RCA outputs on eac amplifier provide a fully processed output to
drive an external amplifier suc as a subwoofer amp.
2. Hig Level inputs are provided for OEM installation to a factory installed stereo system.
3. Auto turn on can be engaged to provide current-sensing turn on from factory speaker wires.
4. T e PC USB connects to your PC wit t e USB cable provided wit your amplifier for DSP control.
5. T e Comm Port is provided for future expansion (i.e. t e optional HD Bluetoot Module).
6. LEDs indicate power on and protect, and also indicate w en t e USB is communicating wit your PC.
7. A Toslink connection is provided for an auxiliary digital input (ST-6X DSP only).
8. Ground: T e ground must be connected to t e frame or to a solid metal body part t at as a direct connection
to t e frame A inputs. T e Remote terminal can be connected to t e +12 trigger output of t e ead unit to turn on
t e amplifier. T e +12V Bat power terminal must be connected directly to t e positive (+) terminal of t e ve icles
battery.
9. On-board fuses (ST-4X DSP only). If t ey ever blow, t ey must be replaced wit identically rated fuses.
10. Speaker output connectors for c annels 1~4 (ST-4X DSP) and 1~6 (ST-6X DSP).
W en bridging t e left and rig t c annels of t e amplifier, you use t e left c annel (C 1) positive and t e rig t
c annel (C 2) negative, as indicated on t e c assis by t e speaker terminals.
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The ST-X DSP Series Control Program
Te control program (GUI) for t e ST-X DSP amplifiers is t e same functionally for bot t e 4-C ST-4X DSP and t e
6-C ST-6X DSP except for t e number of c annels. Bot will ave a default system in t e c annel designation column
but since you ave complete control over all functions, you can use all c annels as t ey best suit your individual
system. Download t e GUI (Grap ic User Interface) from www.zapco.com > downloads, if you ave not already done
t at, and load t e GUI from t e .exe file. Connecting t e PC: Connect t e PC to t e ST-X DSP amp using t e supplied
USB cable. NOTE: T e ST-X DSP GUI is very forgiving about PC Screen resolution. However t e ideal resolution 1600 x
900 optimal on most PC’s.
At t e very top of t e Screen you will find t e Navigation bar. C annel Setup is w ere you will tell t e program w at inputs
and outputs you are using. To begin you need to define your system (see t e full manual for complete instructions).
1. At t e left of t e main GUI Screen is t e Delay section. Since you can not sit directly in t e center of t e car, t e
program can delay t e arrival time of near speakers so it will sound as t oug you are rig t in t e middle of t e car.
2. T e next section olds t e C annel Selection and Crossover. You can pick c annels on at a time or you can pick
t em by pair. Eac c annel as a Hig Pass (HP) and a Low Pass (LP) filter. You can c oose t e S ape of t e crossover
from Butterwort , Linkwitz-Riley, or Bessel and t e Slope using t e drop-down menus.
3. P ase/Level: T e next section is for adjusting levels and c ecking Polarity to be sure all speakers are in p ase wit
eac ot er. T e MUTE buttons allow you to turn off any speakers t at you do not want to ear w ile you are tuning
ot er speakers. You will also find a master level control ere and a system MUTE button.
4. T e lower section of t e GUI is devoted to equalization. Here are 15 bands of parametric equalization for eac
output c annel and you can vary Frequency, Gain, and Q (t e s ape of t e adjustment) for eac band in several ways.
Frequency: Eac band is numbered. You can simply click onto a band button and drag it to w ere you want it. W en
you click onto a band t ere is a “Heads-up display” of t e frequency, gain, and Q of t e band. Any band t at as been
adjusted from 0dB is ig lig ted by t e green dot under t e band’s slider.
To aid t e tuning process you can temporarily bypass a c annels equalization. You can also t e reset function to reset
one c annel or to reset all c annel to default positions wit no equalization.
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