Rockford Fosgate 4.6 Istruzioni per l'uso

.6

Installation Installation

Installation

and and

and

OperationOperation

Operation

.3

.6

® ®

car audio

fanatics

for

100 Watt Amplifier

2-channel

150 Watt Amplifier

2-channel w/crossover

300 Watt Amplifier

4-channel w/crossover

Dear Customer,

Congratulations on your purchase of the world's finest brand of car audio amplifiers.

At Rockford Fosgate we are fanatics about musical reproduction at its best, and we are

pleased you chose our product. Through years of engineering expertise, hand craftsman-

ship and critical testing procedures, we have created a wide range of products that

reproduce music with all the clarity and richness you deserve.

For maximum performance we recommend you have your new Rockford Fosgate

product installed by an Authorized Rockford Fosgate Dealer, as we provide specialized

training through Rockford Technical Training Institute (RTTI). Please read your

warranty and retain your receipt and original carton for possible future use.

Great product and competent installations are only a piece of the puzzle when it comes

to your system. Make sure that your installer is using 100% authentic installation

accessories from Connecting Punch in your installation. Connecting Punch has

everything from RCA cables and speaker wire to Power line and battery connectors.

Insist on it! After all, your new system deserves nothing but the best.

To add the finishing touch to your new Rockford Fosgate image order your Rockford

wearables, which include everything from T-shirts and jackets to hats and sunglasses.

To get a free brochure on Rockford Fosgate products and Rockford accessories, in the

U.S. call 602-967-3565 or FAX 602-967-8132. For all other countries, call +001-602-

967-3565 or FAX +001-602-967-8132.

If, after reading your manual, you still have questions regarding this product,

we recommend that you see your Rockford Fosgate dealer. If you need further

assistance, you can call us direct at 1-800-795-2385. Be sure to have your serial

number, model number and date of purchase available when you call.

The serial number can be found on the outside of the box. Please record it in

the space provided below as your permanent record. This will serve as

verification of your factory warranty and may become useful in recovering your

amplifier if it is ever stolen.

Serial Number: ________________________________

Model Number:________________________________

PRACTICE SAFE SOUND™

CONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS OVER

100dB MAY CAUSE PERMANENT HEARING LOSS. HIGH

POWERED

AUTOSOUND SYSTEMS MAY PRODUCE SOUND

PRESSURE

LEVELS WELL OVER 130dB. USE COMMON SENSE

AND

PRACTICE SAFE SOUND.

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TABLE OF CONTENTS

Introduction .............................................................................................1

Accessory Pack ........................................................................................ 1

Technical Design Features ....................................................................... 1

2.3, 2.6x, 4.6x Design Features ................................................................ 5

Installation Considerations ....................................................................... 7

Mounting Location................................................................................... 8

Battery and Charging................................................................................ 9

Wiring the System .................................................................................... 9

Using Passive Crossovers ....................................................................... 11

Table of Crossover Component Values................................................... 12

Using the XCard..................................................................................... 13

Customizing the XCard .......................................................................... 13

Resistor Chart......................................................................................... 14

XCard Access ......................................................................................... 15

2.3 & 2.6x Installation............................................................................16

4.6x Installation ..................................................................................... 19

System Diagrams....................................................................................24

Troubleshooting .....................................................................................28

Dynamic Power Measurements.............................................................. 31

Specifications......................................................................................... 33

Warranty Information............................................................................. 35

International Information........................................................................36

Sections marked

ADVANCED OPERATION

include in-depth

technical information

Sections marked

TROUBLESHOOTING

include recommendations

for curing

installation problems

Sections marked

INSTALLATION

include “slam dunk”

wiring connections

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Welcome to Rockford Fosgate! This manual is designed to provide

information for the owner, salesperson and installer. For those of you

who want quick information on how to install this product, please turn

to the

Installation Section

of this manual or refer to the icons listed

below. Other information can be located by using the Table of Contents.

We, at Rockford Fosgate, have worked very hard to make sure all the

information in this manual is current. But, as we are constantly finding

new ways to improve our product, this information is subject to change

without notice.

G

ETTING

S

TARTED

– 1 –

INTRODUCTION

TECHNICAL DESIGN FEATURES

This manual provides information on the features, installation and opera-

tion of the Rockford Fosgate 2.3, 2.6x and 4.6x Amplifiers. We suggest you

save this manual for future reference.

We strongly recommend you have your Authorized Rockford Fosgate

Dealer install your new Rockford Fosgate amplifier. If you do choose to

install your amplifier yourself, please be sure to read the entire manual

before beginning.

ACCESSORY PACK

Installation & Operation Manual

(1) Fuseholder

(1) ATC 10 Amp Fuse (2.3)

(1) ATC 20 Amp Fuse (2.6x)

(1) ATC 30 Amp Fuse (4.6x)

(1) 3/32" Allen Wrench

◆ TRANS•ANA

(TRANSconductance Active Nodal Amplifier)

The

TRANS•ANA

(TRANSconductance Active Nodal Amplifier) is a

circuit that allows the audio signal to pass through the amplifier at low

voltage. The signal is directly level-shifted to the fixed high voltage

rails via a pair of driver transistors. Signal linearity is assured by an

active node formed by the drive transistors at ultrasonic frequencies.

This allows amplifier performance similar to trans•

nova

which is

highly stable and linear while utilizing the advantages of a non-

floating power supply.

THE RESULT: An extended frequency bandwidth accurately supplied

to the output stages of the amplifier.

◆ TOPAZ (Tracking Operation Pre-Amplifier Zone)

The

TOPAZ

(Tracking Operation Pre-Amplifier Zone) circuitry solves

ground loop noise problems common to automotive amplifier design.

This innovative new development allows vastly improved isolation of

the input signal grounds from the power supply ground of the

amplifier. This is accomplished by allowing the source unit to control

the potential “environment” of the entire input structure or “zone” of

the amplifier. This process improves the noise rejection of the ampli-

fier by 30-40dB – an astounding 30-100 times better than amplifiers

without TOPAZ.

THE RESULT: Elimination of troublesome ground loop noise between

source and amplifier.

– 2 –

◆ MOSFET Devices

Rockford Fosgate is one of the few manufacturers in the sound

community to utilize MOSFET devices in both the

power supply

and

the

output stages

.

MOSFET

(Metal Oxide Semiconductor Field Effect

Transistor) devices offer several important inherent advantages over

the 30 year old technology of bi-polar design. These advantages

include: thermal stability, switching speed, ultra low output imped-

ance and wider bandwidth linearity. In addition, MOSFETs operate

very similarly to vacuum tubes in that they are more linear than bi-

polar transistors. However, MOSFETs can deliver the midrange clarity

without the limitations of transient response and high frequency

phase shifting normally associated with tube operation.

THE RESULT: Operational characteristics similar to vacuum tubes

without the performance limitations of tube design.

– 3 –

◆ DSM (Discrete Surface Mount) Technology

The

DSM

(Discrete Surface Mount) manufacturing process combines

the advantages of both discrete components and integrated circuitry.

Rockford Fosgate is the only American amplifier manufacturer to have

invested millions into this process. DSM components differ from

conventional discrete components in different ways. They are more

compact, more rugged, and they efficiently dissipate generated heat.

Using them wherever appropriate allows the advantages associated

with discrete circuitry to be retained while also providing room for

both highly advanced processing features and generous PC board

copper paths where needed. Their short lead-out structures allow

maximum audio performance and highest signal-to-noise ratios to be

obtained in amplifiers of desirable package size without resorting to

“amplifier-on-a-chip” shortcuts. These advantages are shown below

in Figure 1.

Figure 1

THE RESULT: Fewer connections, improved reliability, shorter signal

paths, superior signal-to-noise ratio and awesome sonic performance.

Solder

Component

Thru-Hole Surface Mount

PC

Board

PC

Board

◆ NOMAD (NOn-Multiplying Advanced Decision)

All Rockford Fosgate amplifiers use an

analog computer process

to

maximize safe output power under all operating conditions. The

innovative

NOMAD

(NOn-Multiplying Advanced Decision) system

is the most sophisticated version of this technique ever used, bringing

previously unavailable levels of accuracy, stability, temperature

immunity and reliability to this critical process. NOMAD makes

advanced decisions based on device voltages to precisely control the

awesome levels of current available in the output MOSFETs to safe

values – but only when absolutely needed.

THE RESULT: Extremely fast protection system that always protects

the amplifier and never degrades the sound.

– 4 –

◆ High Level Inputs

The high level inputs on the Rockford Fosgate amplifiers convert the

speaker line outputs (high level) to preamp line inputs (low level).

This allows amplifier compatibility with a variety of source units as

well as the ability to integrate into factory systems without the need

for external adapters.

THE RESULT: Allows compatibility with factory and aftermarket

source units.

◆ XCard Crossover (2.6x & 4.6x)

The 2.6x and 4.6x amplifiers utilize internal active crossovers. These

crossovers have many performance advantages such as using dis-

crete components for exact frequency adjustments which are far

superior to potentiometers. Additionally, the XCard can be config-

ured for high-pass, low-pass and full range operation. With slight

modification, many crossover frequencies and slope configurations

can be achieved.

THE RESULT: Increased system design flexibility with a precise

electronic crossover without the limitations of conventional poten-

tiometer designs.

– 5 –

2.3, 2.6X, 4.6X DESIGN FEATURES

CAUTION!

Any adjustment to

the Bias controls may damage

your amplifier and will void

your warranty.

CAUTION!

Do Not Adjust

8

.3

.6

&

Speaker Speaker

B+

L+ L-

R+ R-

High In

Gain

L&R

L R L R

GND

LED

Input

REM GND

Bias

5 3

4 7

2

1

6

+– +–

CAUTION!

Do Not Adjust

8

Bias

Speaker Speaker

B+

LED

REM GND

7

1

.6

CAUTION!

Do Not Adjust

8

Bias

L R

Input

5 3

L R

Input

5 3

4

6

LF+ LF-

RF+ RF-

Speaker

LR– LR+

Speaker

RR– RR+

2

6

Gain

L&R

High In

LR

GND

+– +–

Gain

L&R

High In

LR

GND

+– +–

4

– 6 –

1. Extruded Heatsink

The extruded aluminum heatsink of the RF amplifier dissipates

heat generated by the amplifier's circuitry.

2. Power/Speaker Barrier Strip

The barrier strip uses screw terminals that will accept #10 spade

lugs or bare speaker and power wire sizes from 10-18 AWG.

These gold-plated connectors are immune to corrosion that will

cause signal degradation.

3. RCA Input Jacks

The industry standard RCA jack provides an easy connection for

signal level input. They are gold-plated to resist the signal

degradation caused by corrosion.

4. High Level Inputs

The high level input connectors accept 1/8" spade lugs for the

connection of a source unit that has only speaker line (high level)

outputs.

5. Input Sensitivity Controls

The input level controls are preset for 500mV which will match

the output of most source units. They can be adjusted to match

output levels from a variety of source units.

6. Internal Crossover

The built-in crossover card is configurable for a multitude of

operating frequencies. The orientation of the card in its socket

determines its function of high-pass, low-pass or full range

operation.

7. LED Power Indicator

The LED gives a visual indication of the status of the amplifier,

lighting when the unit is turned on.

8. Bias Controls

The Bias controls are preset at the factory and are not user

adjustable. CAUTION! ANY ADJUSTMENT TO THE BIAS

CONTROLS WILL VOID YOUR WARRANTY!

– 7 –

INSTALLATION CONSIDERATIONS

The following is a list of tools you will need for installing the amplifier:

Wire Cutters #2 Phillips Screwdriver

Wire Strippers Assorted wire connectors

Wire Crimpers Battery Post Wrench

Voltmeter Electric Hand Drill with assorted bits

This section focuses on some of the vehicle considerations for

installing your new amplifier. Checking your battery and present

sound system, as well as pre-planning your system layout and best

wiring routes will save installation time. When deciding on the layout

of your new system, be sure that each component will be easily

accessible for making adjustments.

Before beginning any installation, be sure to follow these simple rules:

1. Be sure to carefully read and understand the instructions before

attempting to install the amplifier.

2. For safety, disconnect the negative lead from the battery prior to

beginning the installation.

3. For easier assembly, we suggest you run all wires prior to

mounting your amplifier in place.

4. Route all of the RCA cables close together and away from any high

current wires.

5. Use high quality connectors for a reliable installation and to

minimize signal or power loss.

6. Think before you drill! Be careful not to cut or drill into gas tanks,

fuel lines, brake or hydraulic lines, vacuum lines or electrical

wiring when working on any vehicle.

7. Never run wires underneath the vehicle. Running the wires inside

the vehicle provides the best protection.

8. Avoid running wires over or through sharp edges. Use rubber or

plastic grommets to protect any wires routed through metal,

especially the firewall.

9. ALWAYS protect the battery and electrical system from damage

with proper fusing. Install a fuseholder and appropriate fuse on

the +12V power wire within 18” (45.7 cm) of the battery terminal.

10. When grounding to the chassis of the vehicle, scrape all paint

from the metal to ensure a good, clean ground connection.

Grounding connections should be as short as possible and always

be connected to metal that is welded to the main body, or chassis,

of the vehicle.

– 8 –

MOUNTING LOCATION

The mounting location and position of your amplifier will have a

great effect on its ability to dissipate the heat generated during normal

operation. The design of our aluminum heatsink serves to easily

dissipate the heat generated over a wide range of operating condi-

tions. However, to maximize the performance of your amplifier, care

should be taken to ensure adequate ventilation.

Trunk Mounting

Mounting the amplifier vertically on a surface with the fin grooves

running up and down will provide the best cooling of the amplifier.

Mounting the amplifier on the floor of the trunk will work but

provides less cooling capability than vertical mounting.

Mounting the amplifier upside down to the rear deck of the trunk will

not provide proper cooling and will severely affect the performance

of the amplifier and is strongly

not

recommended.

Passenger Compartment Mounting

Mounting the amplifier in the passenger compartment will work as

long as you provide a sufficient amount of air for the amplifier to cool

itself. If you are going to mount the amplifier under the seat of the

vehicle, you must have at least 1" (2.54cm) of air gap around the

amplifier's heatsink.

Mounting the amplifier with less than 1" (2.54cm) of air gap around

the amplifier's heatsink in the passenger compartment will not

provide proper cooling and will severely affect the performance of

the amplifier and is strongly

not

recommended.

Engine Compartment Mounting

Rockford Fosgate amplifiers should

never

be mounted in the engine

compartment. Not only will this void your warranty but could create

an embarrassing situation caused by the ridicule from your friends.

BATTERY AND CHARGING

Amplifiers will put an increased load on the vehicle's battery and

charging system. We recommend checking your alternator and

battery condition to ensure that the electrical system has enough

capacity to handle the increased load of your stereo system. Stock

electrical systems which are in good condition should be able to

handle the extra load of any Rockford amplifier without problems,

although battery and alternator life can be reduced slightly. To

maximize the performance of your Rockford Fosgate amplifier, we

suggest the use of a heavy duty battery, high output alternator and an

energy storage capacitor.

WIRING THE SYSTEM

– 9 –

CAUTION:

Avoid running power wires near the low level input

cables, antenna, power leads, sensitive equipment or harnesses. The

power wires carry substantial current and could induce noise into

the audio system.

• For safety, disconnect the negative lead from the battery prior to

beginning the installation.

1. Remove the cover and configure the internal XCard crossovers

prior to installation. Refer to “Using the XCard” (page 13) for

further information.

2. Plan the wire routing. Take care when running signal level RCA

cables to keep them close together but isolated from the amplifier's

power cables and any high power auto accessories, especially

electric motors. This is done to prevent coupling the noise from

radiated electrical fields into the audio signal. When feeding the

wires through the firewall or any metal barrier, protect them with

plastic or rubber grommets to prevent short circuits. Leave the

wires long at this point to adjust for a precise fit at a later time.

3. Prepare the Power cable for attachment to the amplifier by

stripping 1/2" of insulation from the end of the wire. Insert the

bared wire into the B+ terminal and tighten the set screw to secure

the cable in place.

NOTE: The B+ cable MUST be fused 18" or less from the vehicle's

battery. Install the fuseholder under the hood and prepare the

cable ends as stated above. Connections should be water tight.

– 10 –

Trim the power cable within 18" of the battery and

strip 1/2" of insulation from the end of the wire.

Cut the wire loop that is attached to the fuseholder

in half and splice the fuse into the power line

using appropriate inline connectors. Use the

section of cable that was trimmed earlier and

connect it to the other end of the fuseholder.

4. Strip 1/2" from the battery end of the power cable

and crimp a large ring terminal to the cable. Use the ring terminal

to connect to the battery positive terminal. Do not install the fuse

at this time.

5. Prepare the Ground cable for attachment to the amplifier by

stripping 1/2" of insulation from the end of the wire. Insert the bared

wire into the GND terminal and tighten the set screw to secure the

cable in place. Prepare the chassis ground by scraping any paint

from the metal surface and thoroughly clean the area of all dirt and

grease. Strip the other end of the wire and attach a ring connector.

Fasten the cable to the chassis using a non-anodized screw and a

star washer.

6. Prepare the REM turn-on wire for connection to the amplifier by

stripping 1/2" of insulation from the wire end. Insert the bared

wire into the REM terminal and tighten the set screw to secure the

cable into place. Connect the other end of the REM wire to a

switched 12 volt positive source. The switched voltage is usually

taken from the source unit's auto antenna or the accessory lead.

If the source unit does not have these outputs available, the

recommended solution is to wire a mechanical switch in line with

a 12 volt source to activate the amplifier.

7. Securely mount the amplifier to the vehicle or amp rack. Be

careful not to mount the amplifier on cardboard or plastic panels.

Doing so may enable the screws to pull out from the panel due to

road vibration or sudden vehicle stops.

8. Connect the source signal to the amplifier by plugging the RCA

cables into the input jacks at the amplifier.

9. Connect the speakers. Strip the speaker wires 1/2" and insert into

the speaker terminal and tighten the set screw to secure into

place. Be sure to maintain proper speaker polarity.

DO NOT

chassis ground any of the speaker leads as unstable operation

may result.

10. Perform a final check of the completed system wiring to ensure

that all connections are accurate. Check all power and ground

connections for frayed wires and loose connections which could

cause problems.

Cut

here

X

– 11 –

USING PASSIVE CROSSOVERS

A passive crossover is a circuit that uses capacitors and/or coils and is

placed on speaker leads between the amplifier and speaker. The

crossover delegates a specific range of frequencies to the speaker for

optimum driver performance. A crossover network can perform one of

three functions: High-Pass (capacitors), Low-Pass (inductors or coils)

and Bandpass (combination of capacitor and coil).

The most commonly used passive crossover networks are 6dB/octave

systems. These are easy to construct and require one component per

filter. Placing this filter in series with the circuit will reduce power to

the speaker by 6dB/octave above or below the crossover point

depending on whether it is a high-pass or low-pass filter. More

complex systems such as 12dB/octave or 18dB/octave can cause

impedance problems if not professionally designed.

Passive crossovers are directly dependent upon the speaker's imped-

ance and component value for accuracy. When passive crossover

components are used in multiple speaker systems, the crossover's

effect on the overall impedance should be taken into consideration

along with the speaker's impedance when determining amplifier

loads.

CAUTION: The Rockford Fosgate amplifiers are not recom-

mended for impedance loads below 2

Ω

stereo and 4

Ω

bridged

(mono) loads.

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– 12 –

TABLE OF CROSSOVER COMPONENT VALUES

6 dB/Octave Low-Pass

6 dB/Octave High-Pass

Freq.

Hertz

Speaker Impedance

80 4.1mH 1000µF 8.2mH 500µF 16mH 250µF

100 3.1mH 800µF 6.2mH 400µF 12mH 200µF

130 2.4mH 600µF 4.7mH 300µF 10mH 150µF

200 1.6mH 400µF 3.3mH 200µF 6.8mH 100µF

260 1.2mH 300µF 2.4mH 150µF 4.7mH 75µF

400 .8mH 200µF 1.6mH 100µF 3.3mH 50µF

600 .5mH 136µF 1.0mH 68µF 2.0mH 33µF

800 .41mH 100µF .82mH 50µF 1.6mH 26µF

1000 .31mH 78µF .62mH 39µF 1.2mH 20µF

1200 .25mH 66µF .51mH 33µF 1.0mH 16µF

1800 .16mH 44µF .33mH 22µF .68mH 10µF

4000 .08mH 20µF .16mH 10µF .33mH 5µF

6000 51µH14µF .10mH 6.8µF .20mH 3.3µF

9000 34µH 9.5µF68µH 4.7µF .15mH 2.2µF

12000 25µH 6.6µF51µH 3.3µF 100µH 1.6µF

2 OHMS

8 OHMS

4 OHMS

L

C L

C

L C

L

C

L = Low-Pass (Inductor)

C = High-Pass (Capacitor)

For more information, see your Authorized Rockford Fosgate Dealer.

6 dB/Octave High-Pass and Low-Pass Filters

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3386

f

o

= R (in kΩ) for .047µf cap

= R (in kΩ) for .022µf cap

7234

f

o

Where: R = Ω

f

o

= desired crossover frequency

c = capacitor in farads

ex: .047 x 10

-6

for .047mf cap

The crossover point can be altered by changing the resistor value. Use

the following formula to select the appropriate resistor value to be

placed on the XCard.

USING THE XCARD

1

2πf

o

c

The actual formula is:

R =

The crossover functions are controlled through the use of an XCard

and can be set for high-pass, low-pass or full range operation. The

100Hz XCard shipped with your amplifier is set for Full Range. Each

crossover card has two faces: one face operates Full Range, the other

has arrows to indicate the edge for selecting HP (high-pass) or LP (low-

pass) operation. Orient the card with the desired operating edge,

indicated by the arrow, toward the socket terminals inside the ampli-

fier. Firmly, but carefully, plug the card into the socket.

– 13 –

CUSTOMIZING THE XCARD

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Low-Pass Full RangeHigh-Pass

FULL

↕

HP

➝

LP

HP

➝

LP

Crossover Card

High Pass

Low Pass

Full Range

R1

R2

R1

R2

FULL

C1

C2

C1

C2

– 14 –

RESISTOR CHART

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Frequency R1 R2

20Hz 169k

Ω 169kΩ

25Hz 133kΩ 133kΩ

30Hz 110kΩ 110kΩ

35Hz 95.3kΩ 95.3kΩ

40Hz 84.5kΩ 84.5kΩ

45Hz 75kΩ 75kΩ

50Hz 68.1kΩ 68.1kΩ

55Hz 61.9kΩ 61.9kΩ

60Hz 56.2kΩ 56.2kΩ

65Hz 52.3kΩ 52.3kΩ

70Hz 48.7kΩ 48.7kΩ

75Hz 45.3kΩ 45.3kΩ

80Hz 42.2kΩ 42.2kΩ

85Hz 40.2kΩ 40.2kΩ

90Hz 37.4kΩ 37.4kΩ

200Hz 16.9kΩ 16.9kΩ

300Hz 11.3kΩ 11.3kΩ

400Hz 8.45kΩ 8.45kΩ

500Hz 6.65kΩ 6.65kΩ

600Hz 5.62kΩ 5.62kΩ

700Hz 4.75kΩ 4.75kΩ

800Hz 4.22kΩ 4.22kΩ

900Hz 3.74kΩ 3.74kΩ

1kHz 3.40kΩ 3.40kΩ

1.2kHz 2.80kΩ 2.80kΩ

2kHz 1.69kΩ 1.69kΩ

3kHz 1.10kΩ 1.10kΩ

4kHz 845Ω 845Ω

5kHz 665Ω 665Ω

6kHz 562Ω 562Ω

7kHz 487Ω 487Ω

8kHz 422Ω 422Ω

Butterworth Alignment Q = .707

1% resistors used with 0.047µF caps

Butterworth Alignment Q = .707

1% resistors used with 0.022µF caps

Our tests have shown that using 0.047µf capacitors for frequencies below 100Hz, and

0.022µf capacitors for frequencies above 100Hz, result in more linear crossover

control. Refer to the Specifications page to determine the capacitor value of each

supplied XCard.

Frequency R1 R2

20Hz 357kΩ 357kΩ

25Hz 287kΩ 287kΩ

30Hz 237kΩ 237kΩ

35Hz 205kΩ 205kΩ

40Hz 178kΩ 178kΩ

45Hz 162kΩ 162kΩ

50Hz 143kΩ 143kΩ

55Hz 130kΩ 130kΩ

60Hz 121kΩ 121kΩ

65Hz 110kΩ 110kΩ

70Hz 102kΩ 102kΩ

75Hz 95.3kΩ 95.3kΩ

80Hz 90.9kΩ 90.9kΩ

85Hz 84.5kΩ 84.5kΩ

90Hz 80.6kΩ 80.6kΩ

200Hz 35.7k

Ω 35.7kΩ

300Hz 23.7kΩ 23.7kΩ

400Hz 17.8kΩ 17.8kΩ

500Hz 14.3kΩ 14.3kΩ

600Hz 12.1kΩ 12.1kΩ

700Hz 10.2kΩ 10.2kΩ

800Hz 9.9kΩ 9.9kΩ

900Hz 8.6kΩ 8.6kΩ

1.0kHz 7.15kΩ 7.15kΩ

1.2kHz 6.04kΩ 6.04kΩ

2.0kHz 3.57kΩ 3.57kΩ

3.0kHz 2.37kΩ 2.37kΩ

4.0kHz 1.76kΩ 1.76kΩ

5.0kHz 1.43kΩ 1.43kΩ

6.0kHz 1.21kΩ 1.21kΩ

7.0kHz 1.02kΩ 1.02kΩ

8.0kHz 909Ω 909Ω

– 15 –

XCARD ACCESS

The internal XCard crossover(s) are accessible by removing the top

cover from the amplifier. The XCard should be inserted with the filter

side (HP, LP or FULL RANGE) facing the metal contacts inside the

socket (toward RCA jacks).

• Remove Four Allen Screws from cover with supplied Allen wrench (3/32")

• Insert XCard into socket with HP, LP, or FULL RANGE facing RCA jacks

CAUTION!

Do Not Adjust

Bias

Speaker Speaker

B+

LED

REM GND

.6

CAUTION!

Do Not Adjust

Bias

Gain

L&R

L R

Input

Gain

R

Gain

L

L R

Input

LF+ LF-

RF+ RF-

Speaker

LR– LR+

Speaker

RR– RR+

Low-Pass Full RangeHigh-Pass

FULL

↕

HP

➝

LP

HP

➝

LP

High In

LR

GND

+– +–

High In

LR

GND

+– +–

2.3 & 2.6X INSTALLATION

– 16 –

I

N

S

T

A

L

A

T

I

O

N

® ®

High Level Input – “Single Ended” Type

This configuration is used for source units that have “Single Ended” speaker outputs.

Only the “+” output is “hot,” whereas the “–” or “common” are common grounded. To

verify your source unit has these outputs, connect an ohm meter across the “–” output

and radio chassis for a reading of 0Ω.

• L+ and R+ Inputs are connected to corresponding “+” speaker outputs

• L– and R– Inputs are

not used

• GND Input is connected to “–” speaker outputs

CAUTION: Use 1/8" female connectors when using the high level inputs and DO NOT

solder wires directly to the connector

High Level Input – “B.T.L.” Type

This configuration is used for source units that have “B.T.L.” speaker outputs (Bridged

Transformer Less

not

Bacon Tomato & Lettuce). Both “+” and “–” outputs are considered

“hot” or “floating.”

• L+ and R+ Inputs are connected to corresponding “+” speaker outputs

• L– and R– Inputs are connected to corresponding “–” speaker outputs

• GND Input

is not used

unless noise problems arise

B+Gain

L+R L R

LED

Input REM

Front

® ®

Speaker

L+ L-

R+ R-

Speaker

GND

L–

R+

R–

L+

+– +–

GND

High In

L R

AUD

SEL

1 2 3 4 5 6

RDM

RPT

SCAN

PAUSE

D.SCN

DIM

AM

FM

Ch

RPTLD

RDM

DISC

ST

P.SCN LOUDDSPL

R

CLOCK

ILLUM

PWR

AUTO

® ®

VOL

TUNE

Front

R+

GND

B+Gain

L+R L R

LED

Input REM

L+

® ®

Speaker

L+ L-

R+ R-

Speaker

GND

+– +–

High In

LR

100.7

+

–

^

v

Factory Radio

– 17 –

Power Connections

Stereo Operation

• RCA Inputs are connected to

both left

and

right

inputs

• Impedance Load for each channel should be

2

Ω

minimum

• XCard can be set for High-Pass, Low-Pass or Full Range

I

N

S

T

A

L

A

T

I

O

N

® ®

Speaker Speaker

B+

LF+ LF-

RF+ RF-

L R

LED

Input REM GND

Speaker

LR- LR+

Speaker

RR- RR+

Front

Rear

L R

Input

Gain

L+R

R

GND

+–

L

High In

+–

Gain

L+R

R

GND

+–

L

High In

+–

Connect to B+ of battery

with 30A fuse

Less than 18"

Connect to remote

turn-on lead of

source unit

Connect to chassis

ground of vehicle

® ®

Speaker Speaker

B+

L+ L-

R+ R-

L R

LED

Input REM GND

2Ω Min.

.3

+–

2Ω Min.

Gain

L+R

High In

RL

+– +–

GND

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