Rockford Fosgate PUNCH 4020 DSM Bedienungsanleitung



PUNCH 4020 DSM

4-CHANNEL AMPLIFIER

®®

INSTALLATION & OPERATION

Dear Customer,

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

amplifiers. At Rockford Fosgate we are committed to musical reproduction at its

best, and we are pleased you chose our product. Through years of engineering

expertise, hand craftsmanship 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

specializedtrainingthroughRockfordTechnicalTrainingInstitute(RTTI). Please

read your warranty and retain your receipt and original carton for possible future

use.

ToaddthefinishingtouchtoyournewRockfordFosgateimageorderyourRockford

accessories, which include everything from T-shirts and jackets to hats and

sunglasses.

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

please call 602-967-3565 or FAX 602-967-8132. In Canada, call Korbon

Tradingat905-567-1929.ForInternationalorders,FAX+001-1-602-967-8132

or call +001-1-602-967-3565.

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:____________________

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

product, we recommend that you see your Rockford Fosgate dealer. If you

needfurtherassistance,youcancallusdirectat1-800-795-2385.Besureto

have your serial number, model number and date of purchase available

when you call.

PRACTICE SAFE SOUND™

CONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS

OVER100dBMAYCAUSEPERMANENTHEARINGLOSS.HIGH

POWEREDAUTOSOUNDSYSTEMSMAYPRODUCESOUND

PRESSURE LEVELS WELL OVER 130dB. USE COMMON SENSE

AND PRACTICE SAFE SOUND.

GETTING STARTED

TABLE OF CONTENTS

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

Punch 4020 Amplifier Accessory Pack .............................................. 1

Rockford Fosgate Accessories............................................................ 2

Technical Design Features ................................................................ 3

Punch 4020 Design Features............................................................. 6

Installation Considerations ................................................................ 8

Mounting Location............................................................................ 9

Battery and Charging....................................................................... 10

Wiring the System ........................................................................... 10

Using the XCard.............................................................................. 12

Sample Wiring Diagrams ................................................................ 14

Troubleshooting .............................................................................. 18

Dynamic Power Measurements....................................................... 21

Specifications.................................................................................. 23

Warranty Information...................................................................... 24

Welcome to Rockford Fosgate! This manual is designed to provide

information on the Punch 4020 amplifier for owner, salesperson

and installer. To accomplish this, the manual is divided into five

main sections: Introduction, Installation, Troubleshooting, Specifi-

cationsandWarrantyInformation.Forthoseofyouwhowantquick

information on how to install this product, please turn to the Basic

System Diagrams in the Installation section of this manual. 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

findingnewwaystoimproveourproduct,thisinformationissubject

to change without notice.

– 1 –

INTRODUCTION

The Punch 4020 is a 4-channel amplifier which offers 20 Watts

perchannelwhendriveninto4Ohms.Theamplifierutilizesa2/

4 input selector switch and XCard crossovers.

When building a 4-channel amplifier, a major design challenge

is to maintain sound quality in a limited space. For the Punch

4020, Rockford Fosgate Engineers designed the Trans•

Ana

to-

pologywhichisafast,shortloopcircuitallowingtheoutputstage

tobe driven witha low voltagedrive signal.Withthe additionof

a 2/4 input selector switch and XCard crossovers, the 4020 can

beconfiguredinmanypopularsystemdesignswithouttheadded

cost of external processors. The result is an excellent sounding

amplifier in a physically compact area.

The Punch 4020 satisfies the need for a powerful 4-channel

amplifier at a competitive price.

We strongly recommend you have your Authorized Rockford

Fosgate Dealer install the new Punch 4020 amplifier. If you do

choose to install it yourself, please be sure to read the entire

manual before beginning.

PUNCH 4020 AMPLIFIER

ACCESSORY PACK

The accessory pack shipped with the Punch 4020 amplifiers

include the mounting hardware necessary to secure it to the

vehicle as well as attaching the end caps.

Installation & Operation Manual

Punch Verification Certificate

(10)Hex Head screws for speaker and power connectors

(4) Mounting screws for end caps

(4) Mounting screws for amplifier

(1) Allen wrench 7/64"

(1) Allen wrench 13/32"

– 2 –

ROCKFORD FOSGATE ACCESSORIES

Thefollowingaccessorieswere designed to enhance the perfor-

mance of the Punch 4020 amplifier.

Energy Storage Capacitor (PCH-C1)

The Punch 1 farad capacitor is used to provide extra current

neededbyamplifierstoreproducemusicaltransients.ThePunch

Cap also has the natural ability to filter DC ripple caused by the

alternator which can result in noise in the system. The PCH-C1

will maximize both the sound quality and performance that

Rockford Fosgate amplifiers can deliver.

Punch Link (FG-LINK)

The Punch Link is a specially cast heatsink interconnect which

allows you to join any of our current Punch or Punch Power

amplifiers together. While providing additional cooling through

thecouplingprocess, the PunchLink adds thefinishingtouch by

giving you the look of one awesome amplifier.

XCard

Additional crossover card frequencies are available for special-

ized requirements. You can get the following XCards from your

Authorized Rockford Fosgate Dealer.

XM50 = 50Hz XM275 = 275Hz

XM70 = 70Hz XM400 = 400Hz

XM100 = 100Hz XM4.5k = 4,500Hz

XM150 = 150Hz XM6.5k = 6,500Hz

XM200 = 200Hz XM00 = Blank card for

custom crossover

– 3 –

TECHNICAL DESIGN FEATURES

◆trans•

ana

Thetrans•

ana

(TRANSconductanceAdvancedNon-multiplying

Amplifier)isanovelcircuitthatutilizesashort-loopcomplemen-

tary topology and advanced Real Time Protection circuitry.

THERESULT:Anamplifierdesignwiththebenefitsoftubeandbi-

polar transistor amplifier design without the limitations of either.

◆MOSFET Devices

Rockford Fosgate is one of the few manufacturers in any of the

soundcommunitiestoutilizeMOSFETdevicesinboththe

power

supply

and the

output stages

MOSFET

(Metal Oxide Semicon-

ductor 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 impedance and wider bandwidth linear-

ity. In addition, MOSFET and vacuum tubes share many impor-

tant operating characteristics. However, the MOSFET device is

much faster, wider in bandwidth, measurably lower in distortion

and far more linear than vacuum tubes.

THE RESULT: Operational characteristics of vacuum tubes

without the performance limitations of tube design.

◆DSM (Discrete Surface Mount) Technology

The

DSM

(Discrete Surface Mount) manufacturing process com-

binestheadvantagesofbothdiscretecomponentsandintegrated

circuitry.RockfordFosgateis theonlyAmericanamplifiermanu-

facturerto haveinvested millionsinto thisprocess. DSMcompo-

nents differ from conventional discrete components in three

different ways. They are more compact and more rugged, and

they take much better advantage of the PC board to allow them

to get rid of any heat they generate. Using them wherever

appropriate allows the advantages associated with discrete thru-

hole circuitry to be retained while also providing room for both

highly advanced processing features and generous PC board

copperpathswhereneeded.Theirshortlead-outstructuresallow

maximum audio performance and highest signal-to-noise ratios

– 4 –

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.

THE RESULT: Less connections, improved reliability, shorter

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

performance.

Figure 1

Thru-Hole Surface Mount

Component

Solder Solder

◆TOPAZ (Tracking Operation Pre-Amplifier Zone)

The

TOPAZ

(Tracking Operation Pre-Amplifier Zone) circuitry

solves ground loop noise problems common to automotive

amplifierdesign.Thisinnovativenewdevelopmentallowsvastly

improved isolation of the input signal grounds from the power

supplygroundoftheamplifier.Thisisaccomplishedbyallowing

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 amplifier 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.

– 5 –

◆XCard (Internal Crossover)

The Punch 4020 amplifier utilizes 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 crossoverfrequencies andslopeconfigurations

can be achieved.

THE RESULT: Increased system design flexibility with a precise

electronic crossover without the limitations of conventional poten-

tiometer designs.

◆RTP (Real Time Protection)

NOMAD (NOn-Multiplying Advanced Decision)

The Punch 4020 amplifier uses an

analog computer process

absolutely maximize safe output power under all operating condi-

tions. Rockford Fosgate pioneered and developed

RTP

(Real Time

Protection), a crucial element in the performance edge of our

amplifiers. 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 pro-

cess.NOMADmakesadvanceddecisionsbasedondevicevoltages

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.

PUNCH 4020 DESIGN FEATURES

1. Cast Aluminum Heatsink – The cast aluminum heatsink of the

Punch amplifier dissipates heat generated by the amplifier's

circuitry. The inherent advantage of casting provides a 30%

improvement of cooling over conventional extrusion heatsink

designs.

2. End Caps – Interchangeable end caps conceal the wiring and

input cables, giving the amplifier a clean “stealth” look.

– 6 –

3. SpeakerTerminals–Theheavyduty,gold-platedterminalblock

connectors (+ and –) will accept wire sizes from 8 AWG to 18

AWG. These gold-plated connectors are immune to corrosion

that can cause signal deterioration.

4. Power Terminals – The power and ground connectors on the

Punch amplifier are gold-plated and will accommodate up to 8

AWG wire maximizing the input current capability of the

amplifier.

5. REM Terminal – This spade terminal is used for the AP (auto

power) or remote turn on of the Punch amplifier.

Front Gain

Front Rear

Rear Gain

Rear Speakers

386683

– L +

(Bridged Mono)

–R +

Front Speakers

+ L –

(Bridged Mono)

+ R –

REM B+ GND

510

POWER

– 7 –

6. 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.

7. Signal Input Switch– Thisswitchallowsselectionof2channel

or 4 channel source unit feed.

8. Input Sensitivity Controls – The input level controls are preset

for 500mV which will match the output of most source units.

Theycanbeadjustedtomatchinputlevelsrangingfrom150mV

to 3V.

9. Internal Crossovers – These built-in crossover cards are

configurable for a multitude of operating frequencies. The

orientation of the card in its socket determines the function of

high-pass, low-pass, or full range operation.

10. LED Power Indicator – The LED illuminates when the unit is

turned on.

Low Pass Full RangeHigh Pass

FULL

↕

➝

DSM

XCard 2

ROCKFORD CORPORATION

MADE IN THE USA

Rear

XCard Front

XCard

20 Watts x 4 into 4Ωat 0.05% THD

30 Watts x 4 into 2Ωat 0.1% THD

AMPLIFIER

XCard 1

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