Jensen JXP680 Manuel du propriétaire

JXP680

JENSEN

Amplifier lnstalla tion and Operation

Introduction

Thank you for purchasing a Jensen amplifier. The JXP series

amplifiers offer extreme value and performance. Proper

installation is essential for optimal performance and long-term

reliability. Please read through this manual first to familiarize

yourself with your amplifier and its functions.

Warranty Service

If your Jensen amplifier should ever require service, you will

need to have the original dated receipt. If you ever need to

return the unit for any reason, always include the receipt with the

product.

/nstallation Assistance

1.800.323.0221

www.jensen.com

JENSEN

Contents

JXP680

Features .................................m....... 3

Installation ..................................... 3

Before You Begin.. ...................................... .3

Disconnect Battery ....................................... .3

Supplies and Tools Needed ..........................3

Location and Mounting.. ................................4

Routing Wires.. ............................................. .4

Wiring ............................................. 5

Power.. ......................................................... .5

Power Terminal (+12V) ................................ .5

Ground Terminal (GND) ............................... .5

Remote Terminal (REM) ............................... 5

Fuses ........................................................... .5

Inputs, RCA Output.. .................................. .6

Input Wiring ................................................... 6

Connecting Other Amps ................................ 6

Speaker Wiring Options ............................ .7

Indicators and Controls.. ............................9

Control Panel Access ................................... .9

Power/Protect Light.. ..................................... 9

Level ............................................................. .9

Bass ............................................................ 10

2CH / 3CH / 4CH ........................................ 10

Crossover (X-OVER) .................................. 11

Testing ......................................... 11

Reconnect Battery ...................................... 11

Test Power Wiring ....................................... 11

Test Speaker Connections .......................... 11

Troubleshooting ........................... 12

Specifications .............................. 13

Warranty ...................................... 14

JXP680

Features

JXP Series4-channel amplifiers include:

Easy access top mounted controls

0 Continuously variable high pass/low pass

crossover

* 40Hz - 400Hz crossover frequency range

0 Crossover mode selector switch

0 Continuously variable bass boost, centered

at 45Hz

0 Input level control

Traditional input circuitry - low and high level

inputs

Pre-amp output for installation flexibility

Dual status LED diagnostic indicator

Thermal, short circuit and low impedance

protection circuitry

PWM MOSFET power supply

Discrete amplifier design with complementary

high current Bi-polar output stage

Installation

Flat and Phillips screwdrivers

Wire cutters/strippers

Crimping tool

12-volt test light or digital multimeter

Wire brush, sandpaper or scraping tool

(ground connection to vehicle should be a

clean, unpainted metal surface)

Before You Begin

Supplies and Tools Needed

Before you begin, you will need tools, supplies

and adapters. It is best to make sure you have

everything you need before you start.

Disconnect Battery

Cordless drill with assortment of bits

Before you begin, always

disconnect the battery

negative terminal.

JXP680

Location and Mounting Routing Wires

The JXP amplifier’s compact design allows

greater flexibility in mounting. It can be

mounted under a seat or in the trunk.

When selecting a location, remember that

amplifiers generate heat. Select a location

where air can circulate around the amplifier.

Do not cover the amplifier with carpets or

enclose it behind interior trim panels. Do not

mount the amplifier in an inverted or upside

down configuration. Every installation will be

a bit different based upon vehicle design.

Check all locations and placements carefully

before making any cuts or connections.

Allow air circulation around the amplifier,

Battery

Fuse or

Circuit

Breaker

Grommet

1 r

Receiver power wire

-- RCA Cables Power Antenna, ‘Power Wire

Turn-on Wire

gauge

(18 gauge wire) wire or

- - laraer)

’ Ground Screw

Drill 118”hole in

chassis sheet metal

Use the same ground if

using multiple amplifiers

lmportan t

If wiring connections are made wrong, the unit

will not operate properly and it could be

damaged. Follow the installation instructions

carefully, or have the installation handled by

an experienced technician.

JXP680

Wiring

Power

JENSEN

Connect directly to the vehicle battery+

terminal with 8 gauge wire (minimum).

Fuse:

JXP680 50 AMP

Power Terminal (+lZV) Remote Terminal (REM)

~~~+~ ,$,,ze

Install as close

Terminal I Terminal

Adapter to the battery /

as possible /

Ground Terminal (GND)

Connect to a good chassis ground. The ground

connection should be to clean, unpainted metal

to provide a good electrical connection.

GND REM+12”

Drill :/8” hole

in chassis

sheet metal

Connect the power antenna/amplifier turn-on

lead from the receiver to the AMPLIFIER

REMOTE terminal. GND REM+12”

To Receiver

Power

Antenna Lead

Wire

Fuses

25A 25A

Use only blade-type fuses.

Fuse:

JXP680 2 X 25 AMP

JXP680

Speaker Wiring Options

4 Speakers

REAR

HPF

FULL

LPF 0

minimum

2 SubwooferslBridged Mono

REAR

HPF

FULL

IPF 0

FRONT

HPF

FULL

LPF 0

40 4R

minimum minimum

2 Speakers t Bridged Subwoofer

REAR

HPF

FULL

LPF

FRONT

HPF

FULL

LPF

minimum

JXP680

Tri.Mode

2Q = 20 minimum

4fi = 4R minimum

Important

When running a subwoofer and two

full-range speakers together (Tn’-

mode operation), high and low pass

filters must be used. Failure to install

these

filters may damage your amp

and/or speakers.

Freq. Speaker Impedance

OHMS

L C L C L C

80 4.1 mH 1OOOyF 8.2mH 5OOpF 15mH 25OlF

100 3.1 mH 8OOyF 6.2mH 4OOpF 12mH 2OOpF

130 2.4mH 6OOuF 4.7mH 3OOuF -~1OmH 15OuF

JXP680

JENSEN

Indicators and Controls

Control Panel Access

1. Turn thumbscrew counterclockwise to

remove.

2. Gently push down on thumbscrew to lift the

front edge of the control door.

3 Lift and remove control door.

Note:

An optional Allen-head screw (with wrench) is

included and can be used in place of the

thumb screw.

Power/Protect Light

POWER

A dual status LED indicator illuminates

PROTECT

red or green to indicate the status of

the amplifier.

Green - Power applied, ON

Red - Protection circuit activated, STANDBY

Level

LEVEL

2 4

The input level control matches the

output of your radio to the input of

the amplifier. After the installation

8” 3” is complete, make sure the input

2 1

level control on the amp is turned

down all the way (counterclockwise

or all the way to the left). Play a

8” 3”

LEVEL tape or CD (make sure bass and

treble settings or EQ are flat too)

and turn the volume up slowly until

you just start to hear distortion. Now back

the volume down just a bit. On the amp,

slowly turn up the input level control

(clockwise or to the right) until you just start

to hear distortion and back it down a bit.

Now your radio and amplifier levels are

matched.

JXP680

Bass

BASS

3 5

BASS increases the volume of the

bass at 45Hz by up to 12 db.

Use very carefully!

“OS1268

2CH / 3CH / 4CH

The JXP680 can be configured for three different input modes: 4 channel, 3 channel or 2 channel.

4 Channel

When the input selector is set

4CH

to 4CH, the amplifier will

3CH

2CH

operate as a standard 4

channel amp with all RCA

inputs connected.

3 Channel

When the input selector is set

to 3CH, the amplifier is

configured for stereo/mono

operation. The front channels of

the amplifier operate in stereo

mode. The rear channels of the

amplifier are internally bridged

for mono operation. In 3CH the

following RCA inputs will be

used:

2 Channel

When the input selector is set

4CH

n to 2CH, the amplifier is

3CH R

configured for bridged stereo

2CH

operation. The amplifier will

need a two channel input even

though there are four inputs. In

2CH the following RCA inputs

will be used:

Note

Although the above illustrations indicate ,the

low level input being used, the same

connections would apply to the high level

input.

High Input

JXP680

Crossover (X-OVER)

Adjust the crossover to accommodate your

chosen installation method.

LPF-(tow pass filter) Select

this filter when the amplifier will

be driving woofers or

subwoofers.

FULL-Crossover is not active,

amplifier is in “full range”

mode.

HPF-(high pass filter) Select

this filter when the amplifier will

be driving full range/separate

speakers, and you want to limit

the “bass” going to these

speakers.

Tri-mode/Three channel operation

R-CHX L-CHX An amplifier is usually

e” 6a configured for tri-mode

operation when you

lOHi*oaii lOHI100HZ

want to use one

SD 6. amplifier to drive a pair

of front speakers and

subwoofer( In other

4OHi4OOHZdOHilOOHiwords, when you want

R~CHX L-CHX drive a complete system

with one amp. Your

Jensen amplifier is capable of tri-mode

operation.

Important

Tri-mode operation requires using ‘passive

crossovers”. These crossovers are available

at your local retailer or install shop. Failure

to install these filters may damage your

amplifier and/or your speakers.

See Page 8.

Testing

Before you finish the installation, you should do the following tests to make sure the wiring is correct

and everything is operating properly.

Reconnect Battery Test Speaker Connections

These tests make sure the speakers are

connected right. If speakers don’t play at all,

one (or both) speaker wires may be

disconnected. If the wrong speaker plays (you

hear left speaker when you expect right

speaker) make sure you connected the wires

Test Power Wiring

and +I 2V wires.

2. Turn up the receiver volume slightly. All

speakers should operate. If not, check

wiring connections at amplifier and

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