Power Acoustik REACT1-1100, REACT1-1800, REACT1-700, REACT4-900 Owner's Manual

INTRODUCTION

Amplifiers provide high-performance sound reinforcement for your mobile audio equipment.
It s versatility enables compatibility with optional Equalizers, Frequency Dividing Network
Crossovers, and other audio processors in a customized system. The Multi-Mode bridging
Capabilities allow flexibility in hosting several different speaker configurations.

Toachieveoptimumperformance,itishighlyrecommendedthatyoureadthisOwner’s
Manual before beginning installation.

FEATURES

WARNING

High powered audio systems in a vehicle are capable of generating Live Concert high
levels of sound pressure, Continual exposure to excessively high volume sound levels may
cause hearing loss or damage. Also, operation of a motor vehicle while listening to audio
equipments at high volume levels may impair your ability to hear external sounds such as;
horns, warning signals, or emergency vehicles, thus constituting to a potential traffic hazard.
In the interest of safety,ConsumerElectronicsrecommendslisteningatlowervolumelevels
While driving.

2

SRX-D0504; SRX-D1501; SRX-D2501; SRX-D4001

65-C5009-MA

：A3

Model No.:

Owner'sManual

PWM PowerSupply
3 StageProtectionCircuit
SMDTechnology
MIL-Spec FiberglassCircuitBoard
TrueDigitalSwitching
High RailVoltage
2 OhmStable
Compact Chassis
Full MOSFETCircuitry
High LevelInput
Line Output
Bass Boost@45Hz+6dBor+12 dB(Sub woofer Amplifier)
18 dBCrossoverCenteredat80Hz(Sub woofer Amplifier)
Selectable HPF/LPF@80Hzcrossover(FullRangeAmplifier)

TABLE OF CONTENTS PLANNING YOUR SYSTEM

Before beginning the installation, consider the following:
a. If you plan to expand your system by adding other components sometime in the future,

ensure adequate space is left, and cooling requirements are met.

b. Speaker level or RCA, which to use and why?

If your source unit is equipped with both types of outputs, Use the RCA’sfortheamplifier
inputs, as this provides for increased bandwidth and you can still utilize the speaker
Outputs, for driving the (smaller) front speakers directly.

NOTE:
DISTORTION LEVEL IS CONSIDERABLYLOWER FROM PRE-AMP(LOW LEVEL) OUTPUTS, THAN SPEAKER

(HIGH LEVEL)OUTPUTS.

c. Are your components matched? The peak power rating of your speakers must be equal

or greater than the Amplifier’s. They also must be 2-8 Ohms impedance(This information

is normally printed on the speaker magnet).

d. Consider both the length of your leads, and routing when determining the mounting

location. Pre-Amp input Jacks require a length of high quality shielded male to male RCA
patch cord.

MOUNTING YOUR AMPLIFIER

The mounting position of your Amplifier will have a great effect on its ability to dissipate the
heat generated during normal operation. It has an ample heat sink for heat dissipation, and it is
also designed with a thermal shut-down(for heat protection)circuit, making air to be
directed over the cooling fins will improve heat dissipation dramatically. DO NOT enclose
the amplifier in a small box or cover it so that air cannot flow around fins.

Temperaturesincartrunkshave been measured as high as 175F(80c)in the summer time.
Since the thermal shut-down point for the Amplifier in 185 F(85c)it is easy to see that it must
be mounted for maximum cooling capability. To achieve maximum advantage of
convection air flow in an enclosed trunk, mount the amplifier in a vertical position, on a
vertical surface.

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Cooling requirements are considerably relaxed when mounting inside the passenger
compartment since the driver will not often allow temperatures to reach a critical point.
Floor mounting under the seat is usually satisfactory as long as there is at least 1 inch(2cm)
above the Amplifier’s fins for ventilation.

a. Select a suitable location that is convenient for mounting, is accessible for wiring, and

has an ample room for air circulation and cooling.

b. Use the amplifier as a template to mark the mounting holes. Remove the Amplifier and

drill 4 holes. With extreme caution, inspect underneath surface before drilling.

c. Secure the Amplifier using the screws provided.

43

PLANNING YOUR SYSTEM ................................................ 4

MOUNTING YOUR AMPLIFIER ........................................... 4

WIRING CONNECTION .................................................... 5-7

POWER INDICATOR LED ................................................... 7

INPUT SENSITIVITY CONTROL ............................................. 7-8

CONNECTING THE SPEAKER ............................................ 8-10

TROUBLE SHOOTING GUIDE ............................................. 11

WARNING ....................................................................... 12

SPECIFICATION ............................................................... 12