PowerAcoustik LFA-5500 Manuale utente

LFA4-840 / LFA4-1200 / LFA4-1600

LFA1-2000D / LFA1-4000D / LFA1-5500D

LFA2-420 / LFA2-600 / LFA2-800

LFA2-1250 / LFA2-1800 / LFA2-2200 / LFA2-2600

OWNERS MANUAL

- 2 -

INTRODUCTION

Power Acoustik amplifiers provide high-performance sound reinforcement for your

mobile audio equipment. Its versatility enables compatibility with optional Equalizers,

Frequency Dividing Crossover Networks, and other audio processors in a customized

system. The Multi-Mode bridging capabilities allow flexibility in hosting several different

speaker configurations.

To achieve optimum performance, it is highly recommended that you read this

Owners Manual before beginning installation.

WARNING

High powered audio systems in a vehicle are capable of generating "Live Concert"

high levels of sound pressure. Continued exposure to excessively high volume sound

levels may cause hearing loss or damage. Also, operation of a motor vehicle while

listening to audio equipment at high volume levels may impair your ability to hear

external sounds such as; horns, warning signals, or emergency vehicles, thus

contributing to a potential traffic hazard. In the interest of safety, Power Acoustik

recommends listening at lower volume levels while driving.

- 3 -

Before beginning the installation, consider the following:

1. Do you plan to add additional mobile electronics equipment in the future?

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.

2. Should you use high or low level inputs?

Your Amplifier has been designed to accept Low-Level(Pre-Amp outputs from your

radio) source signal. If your radio/source is equipped with Pre-Amp outputs, it is

possible to utilize them to drive the Amplifier and the 2 front speakers. Then, use the

built-in power of your radio to drive the 2 rear speakers.

3. Are your components matched?

The RMS power rating of your speaker(s) must be equal or greater than the RMS

power rating of your amplifier. Your speaker(s) also must be 2 - 8 Ohms impedance

for stable amplifier operation. Impedance information is normally printed on the

speaker basket or magnet.

4. Where will the amplifier be installed?

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

location. It is best to run power and RCA wiring on opposite sides of the vehicle to

prevent induced noise. Pre-amp input jacks require a length of high quality shielded

male to male RCA patch cord.

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

WIRING CONNECTION ....................................................................

CONTROL FUNCTIONS .....................................................................

SPEAKER CONNECTION MONO CHANNEL ..................................

2 CHANNEL ............................................

4 CHANNEL ............................................

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

SPECIFICATION .................................................................................

WARNING .........................................................................................

5, 6, 7

8, 9

10, 11

12, 13, 14

16, 17

TABLE OF CONTENTS

PLANNING YOUR SYSTEM

- 4 -

CONNECTING THE POWER (Fig.1)

CAUTION:

AS A PRECAUTION, DISCONNECT THE POWER WIRE FROM THE BATTERY WHILE MAKING THE

POWER AND GROUND CONNECTIONS TO THE AMPLIFIER.

4/8 GAUGE(Thicker if planning for additional Amplifiers) wire is recommended for

both the power and ground wires. 12 Gauge, for the remote turn-on wire. Both

types are available at most Mobile Audio Dealers or Installation Shop.

(1) Ground :To Vehicle Chassis

To avoid unwanted ignition noise caused by ground loop, it is essential that the

Amplifier be grounded to a clean, bare, metal surface of the vehicle's Chassis

NOTE :

GROUND WIRE SHOULD NOT BE EXTENDED MORE THAN 3 FT. (1 METER).

(2) +12 Volt(Fused) Constant Power:To Battery (+)

Due to the power requirements of the Amplifier, this connection should be made

directly to the positive (+) terminal of battery. For safety measures, install an in-line

Fuse Holder (not included) as close to the battery positive (+) terminal as

possible with an ampere rating; not to exceed total value of fuses in Amp.

(3) Remote Turn-On Input: To remote turn-on output of Car Stereo

This Amplifier is turned "ON" remotely when the vehicle's stereo is turned "ON".

NOTE :

IF YOUR RADIO DOES NOT HAVE A +12 VOLT OUTPUT LEAD WHEN THE RADIO IS TURNED ON, THE "REMOTE"

TERMINAL ON THE AMPLIFIER CAN BE CONNECTED TO VEHICLE'S ACCESSORY CIRCUIT THAT IS LIVE WHEN THE

KEY IS "ON".

FIG. 1

- 5 -

RCA input jacks

These RCA input jacks are for use with source units that

have RCA or Line level outputs. A source unit with a

minimum level of 200mV is required for proper operation.

The use of high quality twisted pair cables is

recommended to decrease the possibility of radiated

noise entering the system.

Auxiliary outputs

The Auxiliary outputs offer Power Acoustik amplifiers easy,

unlimited system expansion.

Route RCA's from the line out of the first amplifier to the line

input of a second amplifier when using a single source

output.

LEVEL Control

The level control will match the amplifiers sensitivity to the

source units signal voltage.

LFA2-420/LFA2-600/LFA4-840/LFA4-1200/LFA4-1600

LFA1-2000D/LFA1-4000D/LFA1-5500D : The Operating range

is 200mV minimum to 6V maximum.

LFA2-800/LFA2-1250/1800/2200/2600 : The Operating range

is 200mV minimum to 3V maximum.

CAUTION: Do not run the amplifier in high volume for long time,

otherwise the loudspeakers will be damaged.

Bass EQ / BASS BOOST

LFA2-420/LFA2-600/LFA4-840/LFA4-1200/LFA4-1600 : The

boost can be selected 0dB or 18dB.

LFA2-800/LFA2-1250/LFA2-1800/LFA2-2200/LFA2-2600 : The

boost can be adjusted between 0dB to 24dB.

LFA1-2000D/LFA1-4000D/LFA1-5500D : The boost can be

adjusted between 0dB to 18dB.

Full pass x-over switch

When the switch is in the "Full" position, full range signal is

passed.

HPF X-over switch

When the switch is in the "HPF" position, frequencies higher

than the high pass frequency setting are passed.

LPF X-over switch

When the switch is in the "LPF" position, frequencies lower

than the low pass frequency setting are passed.

CONTROLS

- 6 -

High pass x-over frequency control

This control is used to select the desired high pass x-over

frequency.

LFA2-420/LFA2-600/LFA4-840/LFA4-1200/LFA4-1600 : The

frequency can be adjusted between 40Hz and 250Hz.

LFA2-800/LFA2-1250/LFA2-1800/LFA2-2200/LFA2-2600 : The

frequency can be adjusted between 50Hz and 500Hz.

Low pass x-over frequency control

This control is used to select the desired low pass x-over

frequency.

LFA2-420/LFA2-600/LFA4-840/LFA4-1200/LFA4-1600 : The

frequency can be adjusted between 40Hz and 250Hz.

LFA2-800/LFA2-1250/LFA2-1800/LFA2-2200/LFA2-2600 : The

frequency can be adjusted between 30Hz and 500Hz.

LFA1-2000D/LFA1-4000D/LFA1-5500D : The frequency can

be adjusted between 40Hz and 200Hz.

SUBSONIC

LFA2-800/LFA2-1250/LFA2-1800/LFA2-2200/LFA2-2600 : The

frequency can be adjusted between 30Hz and 175Hz.

LFA1-2000D/LFA1-4000D/LFA1-5500D : The frequency can

be adjusted between 20Hz and 50Hz.

INPUT MODE

Selects 2, 3 or 4 channel operation(FIG. 2)

LFA4-840/1200/1600

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CONTROLS

FIG. 2

- 7 -

LED

Will illuminate GREEN to indicate the amplifier is on and

operating normally, and will be illuminated RED if the

amplifier shuts down due to short circuit, DC offset, or

overheating detected by on board protection circuitry.

REMOTE

Controls the subwoofer amplifier gain, from a remote

location for ease of adjustment during listening.

Warning: Do not connect a level control knob from other

manufacturers to the Remote Sub Level Control of any amplifier.

Even though the connectors fit properly, the control knob and

connector pin positions may be different and the amplifier will be

damaged.

PHASE

0°or180° selectable for switching the phase of the output

to the woofer.

MASTER/SLAVE MODE[LFA1-2000D/4000D/5500D]

Controls whether the amplifier is a slave or master when

connected in combined amplifier configurations. (Refer to

the Master Mode section of this guide.)

All of the controls will be adjusted by the "Master"

amplifier.

-Slave mode : To be switched " Slave mode" when linking

one amplifier with another amplifier.

-Master mode : To be switched " Master mode" when only

using this single amplifier.

CONTROLS

REMOTE

- 8 -

MASTER MODE CONFIGURATION

LFA1-2000D / LFA1-4000D / LFA1-5500D

1.Lowest Recommended Impedance is 1ohm mono.

2.RCA Inputs are connected to both Left and Right channels

3.Gain controls to be set match input source

4.Line Output configured for stereo operation

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