Rockford Fosgate 250.2, 250.1 User Manual

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Page 1

power

250.

® ®

250.

power

new

chrome

heatsink

car audio

for

fanatics

competition Power amplifiers Operation & Installation

punch

Page 2

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 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 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 fanatic image order your Rockford Fosgate wearables, which include everything from T-shirts and jackets to hats and sunglasses.

To get a free brochure on Rockford Fosgate products and Rockford wearables, please call 602-967-3565 or FAX 602-967-8132. For International orders, FAX +001-1-602-967-8132 or call +001-1-602-967-3565.

PRACTICE SAFE SOUND™

CONTINUOUS EXPOSURE TO SOUND PRESSURE LEVELS OVER 100dB MAY CAUSE PERMANENT HEARING LOSS.

IGH POWERED AUTOSOUND SYSTEMS MAY PRODUCE SOUND PRESSURE LEVELS WELL OVER 130dB. USE

COMMON

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 1-800-669-9899. 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.

SENSE AND PRACTICE SAFE SOUND.

Serial Number:_____________________________________________

Model Number: ____________________________________________

Page 3

ABLE OF

ONTENTS

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

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

Technical Design Features.............................................................................................................................................2

250.2 Design Features .................................................................................................................................................5

250.1 Design Features .................................................................................................................................................7

Installation Considerations ............................................................................................................................................9

Mounting Locations....................................................................................................................................................10

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

Wiring the System......................................................................................................................................................11

Using Passive Crossovers............................................................................................................................................12

Table of Crossover Components...................................................................................................................................13

Using the XCard.........................................................................................................................................................14

Customizing the XCard ...............................................................................................................................................14

XCard Resistor Chart...................................................................................................................................................15

250.2 Installation ......................................................................................................................................................16

Using the 250.2 Internal Switching Network ..................................................................................................................19

Using the 250.2 Balanced Line Inputs ..........................................................................................................................24

250.1 Installation ......................................................................................................................................................26

Using the 250.1 Internal Switching Network ..................................................................................................................31

System Diagrams.......................................................................................................................................................34

Rockford Fosgate Accessories ......................................................................................................................................38

Troubleshooting.........................................................................................................................................................40

Autosound 2000’s Quick Check for Troubleshooting.......................................................................................................43

250.2 Specifications...................................................................................................................................................46

250.1 Specifications ..................................................................................................................................................47

Warranty Information .................................................................................................................................................48

International Information.............................................................................................................................................49

ETTING

TARTED

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.

O p

Sections marked

ADVANCED OPERATION

include in-depth

technical information

include “slam dunk”

® ®

N S T A L L A T

I O N

Sections marked

INSTALLATION

wiring connections

TROUBLE-

S H O O T

I N G

Sections marked

TROUBLESHOOTING

include recommendations

for curing installation

problems

Page 4

NTRODUCTION

The “250 Series” Power amplifiers represent the best Rockford Fosgate has to offer! Our engineers devised technical features which would be considered overkill by other audio manufacturers, but not at Rockford Fosgate! Trans•nova, DIAMOND and TOPAZ, exclusively designed by Rockford, are just a few of these features which are described in the Technical Design Features section of this manual.

The 250.2 is a two-channel amplifier which is optimized to drive 2Ω stereo and 4Ω bridged loads. The 250.1 is a single channel amplifier optimized to drive a 2Ω (single amp) or a 4Ω bridged load (pair of amps bridged to a single load).

The “250 series” use Rockford's innovative technologies for awesome sound quality, reliable performance and high output power into low impedances. This can be beneficial for serious competition vehicles.

UNCH

MPLIFIER

The accessory pack shipped with the “250 series” Power amplifiers include the mounting hardware necessary to secure the ampliifer to the vehicle and to attach the end caps to the amplifier.

250 S

ERIES

CCESSORY

ACK

Punch Power 250.2 Punch Power 250.1

Installation & Operation Manual Installation & Operation Manual Punch Verification Certificate Punch Verification Certificate (4) Amplifier mounting screws (#8 x 3⁄4" phillips) (4) Amplifier mounting screws (#8 x 3⁄4" phillips) (8) Speaker & power connector screws (3/32" allen) (6) Speaker & power connector screws (3/32" allen) (4) End cap mounting screws (9/64" allen) (4) End cap mounting screws (9/64" allen) (1) Allen wrench 3/32" (1) Allen wrench 3/32" (1) Allen wrench 9/64" (1) Allen wrench 9/64"

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Page 5

ECHNICAL

Many of the solutions to common design problems encountered by Rockford Fosgate engineers created entire new circuit designs as well as new ways to construct the Punch 250.2 and 250.1 Power Amplifiers. In our flagship amplifiers, no expense was spared in design and construction from the unique circuitry design to the manufacturing process that has proven to be the industry reference for many years. Described below are just some of the accomplishments achieved by our engineering and manufacturing staff.

ESIGN

EATURES

◆ trans•

The trans• the audio signal to pass through the amplifier at supply and is configured to increase power gain. The increase in power gain allows the drive stage to operate at a lower voltage. A low voltage drive stage is the same principle used in high quality preamplifiers to produce high linearity and wide bandwidth.

The resulting design utilizes an output stage with a simpler gain structure and a shorter total signal path than conventional high voltage (bi-polar) designs. The number of stages is reduced from five or more to three. The output stage is further refined into a trans-impedance stage (current to voltage converter) to achieve a short loop (fast) negative feedback. The output stage is driven cooperatively by a transconductance stage (voltage to current converter).

THE RESULT: Superior sound quality, greater efficiency and higher reliability.

nova

(TRANS conductance NOdal Voltage Amplifier) is a patented circuit (U.S. Patent 4,467,288) that allows

E-I I-E

(TRANSconductance NOdal Voltage Amplifier)

low voltage

trans•nova circuitry

. Each amplifier channel utilizes its own “fully floating” power

◆ DIAMOND (Dynamically Invariant AMPlification Optimized Nodal Drive)

DIAMOND

design which reduces high frequency distortion. Amplifiers which utilize a large array of output MOSFETs cause a high capacitive load on the driver stage. This load can make the high frequencies sound harsh. The DIAMOND circuit eliminates high frequency distortion by allowing the driver to operate with 20dB or more of current headroom, whereas traditional drivers have only 6dB of current headroom.

THE RESULT: Lower distortion and greater inherent stability.

(Dynamically Invariant AMplification Optimized Nodal Drive - patent pending) is an important advance in circuit

◆ 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 amplifier by 30-40dB – an astounding 20-100 times better than amplifiers without TOPAZ.

THE RESULT: Elimination of troublesome ground loop noise between source and amplifier.

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◆ 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.

Solder

Component

Solder

PC Board

Figure 1

PC Board

Thru-Hole Surface Mount

THE RESULT: Less connections, improved reliability, shorter signal paths, superior signal-to-noise ratio and awesome sonic performance.

◆ XCard (Internal Crossover)

The Power amplifiers utilize internal active crossovers. These crossovers have many performance advantages such as using discrete components for exact frequency adjustments which are far superior to potentiometers. Additionally, the be configured 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 potentiometer designs.

XCard

can

◆ Stereo Pass-Thru

The

Pass-Thru

cables or “Y” adapters. The 250.1 Pass-Thru provides constant Full Range stereo output. The 250.2 has the ability to provide constant Full Range stereo output as well as distribute one of its internal XCards to the Pass-Thru for a dedicated High-Pass or Low-Pass output.

THE RESULT: Convenient signal level output for adding extra amplifiers.

output provides a convenient source for daisy-chaining an additional amplifier without the need for extra RCA

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Page 7

◆ Balanced Line Inputs (250.2)

Using the Balanced Line Inputs provides the last word in achievable rejection of noise induced in the cable between the source and the amplifier. The differential input circuitry (Figure 2) used in the balanced input system rejects whatever signals are common to both of the shielded, twisted-pair conductors. Balanced line is universal in concert installations where the stage and mixing consoles are hundreds of feet apart. Long signal

Figure 2

Center

Conductor

Outer

Shield

Differential inputs only amplify the difference between two conductors. Note: the noise spikes appear on both the center conductor and the outer shield and therefore are not amplified.

RCA Input

Differential

Input

cables and electrically-noisy environments make signal integrity and noise rejection an extremely difficult challenge.

THE RESULT: Quiet transmission of audio from source to amplifier.

◆ NOMAD (NOn-Multiplying Advanced Decision)

The Power amplifiers use an conditions. The innovative 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.

analog computer process

NOMAD

(NOn-Multiplying Advanced Decision) system is the most sophisticated version of this

to absolutely maximize safe output power under all operating

◆ MOSFET Devices (Metal Oxide Semiconductor Field Effect Transistor)

Rockford Fosgate is one of the few manufacturers in any of the sound communities to utilize MOSFET devices in both the

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 impedance and wider bandwidth linearity. In addition, MOSFET and vacuum tubes share many important 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.

power

◆ ITS (Increased Thermal Stability)

The

ITS

(Increased Thermal Stability) Power Supply design is new in Rockford Fosgate amplifiers. A major problem associated with any amplifier design is how to get rid of the heat generated by its circuitry. Clearly, it is highly desirable to minimize the amount of heat generated in the first place. The “250 series” Power amplifiers employ a new toroidal power transformer design in which the high current input leads are carried directly to the switching power MOSFETs. This both minimizes PC board heating and takes advantage of natural air cooling of these leads.

THE RESULT: Maximizes power supply efficiency by eliminating unnecessary heat generation.

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Page 8

250.2 D

1. Cast Aluminum Chrome Heatsink – The cast aluminum heatsink of the Punch Power 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 – The unique end caps conceal the wiring and input cables, giving the amplifier a clean “stealth” look.

ESIGN

EATURES

3 13 8

Unbal.

Speaker

0°-180°

+ L –

Gain

Power

REM

L (Mono)

Bal.

Pass-

Thru

EZ - 180° - 0° Speaker

Bal.

Bridged

Input

Dual B+

4 4

Dual GND

312

+ R –

Gain

3. Speaker Terminals – The heavy duty, gold-plated terminal block 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 dual power and ground connectors on the Punch Power amplifier are gold-plated and will accommodate up to two 8 AWG wires maximizing the input current capability of the amplifier.

5. REM Terminal – This gold-plated spade terminal is used for the AP (auto power) or remote turn on of the Punch 250.2 Power amplifier.

6. RCA Input Jacks – The industry standard RCA jack provides an easy connection for signal level input. They are goldplated to resist the signal degradation caused by corrosion.

7. Balanced Line Input– This input will allow the balanced inputs to be used in conjunction with the Punch 250.2 Power amplifier to provide better noise rejection.

8. Signal Input Switch – This switch allows selection of either the RCA or Balanced Line inputs.

9. RCA Pass-Thru Jacks – The Pass-Thru provides a convenient source for daisychaining an additional amplifier. This

eliminates the need for additional RCA cables or “Y” adapters. One of the internal crossovers can be designated to the Pass Thru output creating a dedicated low-pass, high-pass, or full range output.

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Page 9

10. Input Sensitivity Controls – The input level controls are preset to match the output of most source units. They can be

Low-Pass

Full Range

High-Pass

FULL

*Bridging Note: The Punch 250.

can be

bridged in many configurations. Refer to your

owner's manual to determine which mode will

work best in your system.

125 Watts X 2 into 4 Ohms

with less than 0.05% THD + N from 20-20kHz

225 Watts X 2 into 2 Ohms

with less than 0.10% THD + N from 20-20kHz

ROCKFORD CORPORATION

MADE IN THE USA

XCard Options

XCard 1

XCard 2

Amplifier

Pass Thru

Amplifier

XCard 1 XCard 2

250.

AMPLIFIER

POWER

XCard 1 XCard 2

Audiophile Bypass

Not Used Not Used

Audiophile Bypass

Not Used

Amp Only

Pass Thru

XCard 1

XCard 2

adjusted to match output levels from a variety of source units.

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

12. E-Z Bridge Switch / 0°-180° Phase Switch – This dual purpose switch enables you to E-Z bridge the amplifier or invert the signal phase of the right channel.

13. Phase Switch – This switch enables you to easily invert the phase of the left channel without having to disconnect the speaker wires.

14. Crossover Switching – These internal switches allow the crossover to be distributed to the amplifier and Pass-Thru in many different configurations.

15. Audiophile Bypass – One of the crossover switching configurations allows the internal crossover circuit to be bypassed, maintaining Audiophile sound quality due to a shorter signal path.

16. LED Power Indicator – The LED gives a visual indication of the status of the amplifier, lighting when the unit is turned on.

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250.1 D

1. Cast Aluminum Chrome Heatsink – The cast aluminum heatsink of the Punch Power amplifier dissipates heat

2. End Caps – The unique end caps conceal the wiring and input cables, giving the amplifier a clean “stealth” look.

ESIGN

EATURES

generated by the amplifier's circuitry. The inherent advantage of casting provides a 30% improvement of cooling over conventional extrusion heatsink designs.

L (Mono) R

Speaker

+ L –

L Pass-Thru R Pass-Thru

REM

5 4 4

Gain

Dual B+

136

Power

L + R / L

(Mono)

Dual GND

X-Over

24dB/12dB/0dB

0°-180°

5. REM Terminal – This gold-plated spade terminal is used for the AP (auto power) or remote turn on of the Punch 250.1 Power amplifier.

6. RCA Input Jacks – The industry standard RCA jack provides an easy connection for signal level input. They are goldplated to resist the signal degradation caused by corrosion.

7. Summed Stereo / Mono Switch – This switch is used to select whether 1 or 2 signal inputs will be used to drive the amplifier.

8. Pass-Thru RCA Jacks – The Pass-Thru provides a convenient source for daisychaining an additional amplifier.This eliminates the need for additional RCA cables or “Y” adapters. The Pass-Thru output is Full Range only.

9. Input Sensitivity Control – The input level control is preset to match the output of most source units. It can be adjusted to match output levels from a variety of source units.

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Page 11

10. Internal Crossover – This built-in crossover card is configurable for a multitude of operating frequencies. The

FULL

ROCKFORD CORPORATION

MADE IN THE USA

Do Not Chassis

Ground Any Speaker.

–

POWER

250 Watts X 1 into 4 Ohms

with less than 0.10% THD + N from 20-20kHz

500 Watts X 1 into 2 Ohms

with less than 0.15% THD + N from 20-20kHz

AMPLIFIER

250.

XCard 1

Low-Pass

Full Range

High-Pass

orientation of the card in its socket determines the function of high-pass, low-pass or full range operation.

11. Phase Switch – This switch enables you to easily invert the phase without having to disconnect the speaker wires.

12. Crossover Switch – This multi-function switch enables you to select a 12dB per octave slope or 24dB per octave

slope for the internal crossover. When switched to 0dB, the internal crossover circuit can be bypassed, maintaining Audiophile sound quality due to a shorter signal path.

13. LED Power Indicator – The LED illuminates when the unit is turned on.

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Page 12

NSTALLATION

Tools Needed

The following is a list of tools you will need for installing the “250 Series” Power amplifiers:

Allen wrenches 9/64" & 3/32" (included) Wire Cutters Wire strippers Voltmeter Battery post wrench Wire crimpers Electric hand drill and assorted bits Assorted connectors

This section focuses on some of the vehicle considerations for installing your new Punch 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. 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.

ONSIDERATIONS

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

5. Use high quality Connecting Punch accessories 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 for 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 fuse on the +12V power wire within 18" (45.7cm) 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.

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Page 13

OUNTING

The mounting location and position of your amplifier will have a great effect on its ability to dissipate the heat generated under normal operation. The design of our cast aluminum heatsink serves to easily dissipate the heat generated over a wide range of operating conditions. 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

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.

OCATIONS

not

recommended.

Mounting the amplifier with less than 1" (2.54cm) of air gap around the heatsink in the passenger compartment will not provide proper cooling and will severely affect the performance of the amplifier and is strongly

Engine Compartment Mounting

Rockford Fosgate amplifiers should but could create an embarrassing situation caused by the ridicule from your friends.

ATTERY AND

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 and an energy storage capacitor.

NOTE: These amplifiers utilize a large array of power supply capacitance and can draw substantial current at turnon. The dashboard BATTERY VOLTAGE and/or ALTERNATOR CHARGE lamp may illuminate for a brief period while momentarily recharging the capacitor bank. This may be most noticeable when the amplifier is off for at least a day or two and is considered normal operation.

HARGING

not

recommended.

never

be mounted in the engine compartment. Not only will this void your warranty

– 10 –

Page 14

IRING

YSTEM

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.

1. Configure the internal XCard crossovers prior to installation. Refer to the “Using the Signal Switching Network” (page 19 for the 250.2 and page 31 for 250.1) 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 5/8" of insulation from the end of the wire. The use of 8 gauge power cable can interfere with the installation of the end caps. Proper wire dress can prevent this from occurring. To prevent the wire from fraying, strip the insulation at a 45° angle. Insert the bared wire into the B+ terminal with the long side of the insulation on the top. Bend the cable down at a 90° angle. Tighten the set screw to secure the cable in place. We recommend using (2) 8 gauge cables for power and for ground. This will give you the best performance possible.

4. Strip 3/8" 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 a length of cable to be used for the ground connection. Strip 5/8" of insulation from the end of the cable as described above and connect to the appropriate terminal of the amplifier. 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 1/4" of insulation from the wire end and crimping an insulated spade connector in place. Slide the connector over the REM terminal on the amplifier. Connect the other end of the REM wire to a switched 12 volt positive source. The switched signal 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.

STRIP WIRE

AMP

5/8"

INSULATION

7. Securely mount the amplifier (with supplied screws) 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 vibrations or sudden vehicle stops.

8. Connect the source signal to the amplifier by plugging the RCA cables into the input jack(s) at the amplifier. If using Balanced Line Inputs, refer to page 24.

9. Connect the speakers. Strip the speaker wires 5/8" and insert into the appropriate terminal on the amplifier. Insert the bared wire 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.

– 11 –

Page 15

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 from road vibrations.

11. After the final inspection is complete, install the power fuse and enjoy listening. During the initial listening period, you may need to “fine tune” any phasing and level settings within your particular vehicle. To aid in this procedure, play a track with high musical content and cruise around your neighborhood. After fully evaluating the transient response of your system and making any final adjustments, all your neighbors within a 1 mile radius will assume that you have just successfully completed another upgrade to your audio system for which they will probably spill thumbtacks on your driveway.

NOTICE!

SING

Amplifiers using the trans•

nova

topology improve in sound quality after warming up. We recommend operating the 250.2 and 250.1 for approximately 15 minutes prior to evaluation under judging criteria or tune-ups to establish its normal operating temperature.

* Your friends will call it MAGIC, you can call it Rockford technology! *

a d v

ASSIVE

ROSSOVERS

a n c e d

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.

O p e r a t i o n

Passive crossovers are directly dependent upon the speaker's impedance 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.

– 12 –

Page 16

ABLE OF

ROSSOVER

OMPONENT

ALUES

O p

6dB/Octave Low-Pass

Freq. Hertz

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

2 OHMS

C L

Speaker Impedance

6dB/Octave High-Pass

4 OHMS

8 OHMS

L C

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

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

L = Low-Pass (Inductor) C = High-Pass (Capacitor)

For more information, see your Authorized Rockford Fosgate Dealer.

– 13 –

Page 17

SING THE

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

ARD

Low-Pass Full RangeHigh-Pass

USTOMIZING THE

The crossover point can be altered by changing the 4 resistor values. Use the following formula to select the appropriate resistor value to be placed on the XCard.

3386

7234

= R (in kΩ) for .047mf cap

= R (in kΩ) for .022mf cap

➝

ARD

➝

The actual formula is: R =

Where: R = Ω

fo = desired crossover frequency c = capacitor in farads ex: .047 x 10-6 for .047mf cap

FULL

↕

O p

2πfoc

Crossover Card

High Pass

Low Pass Full Range

FULL

– 14 –

Page 18

ARD

ESISTOR

HART

Our tests have shown that using 0.047µf capacitors for frequencies below 100Hz, and 0.022mf 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.

O p

Butterworth Alignment Q = .707 1% resistors used with 0.047mF capacitors

Frequency R1 R2 20Hz 169kΩ 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

1.0kHz 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 0.022mF capacitors

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 35.7kΩ 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 86kΩ 86kΩ

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 10.2kΩ 10.2kΩ

8.0kHz 909Ω 909Ω

– 15 –

Page 19

250.2 I

NSTALLATION

250.2 Power Connections (Option #1)

® ®

N S T A L L A T I O N

Power

REM

Connect to remote

turn-on lead of

source unit.

Less than 18"

Connect to B+ of battery

with a 60 amp fuse.

*Keep wire as short as possible.

2 Power Connections (Option #2)

250.

Dual B+ Dual GND

Connect to chassis ground of vehicle*

+ –

Power

Less than 18"

*Keep wire as short as possible.

REM

Connect to remote

turn-on lead of

source unit.

Connect to B+ of battery

Dual B+ Dual GND

+ –

with a 60 amp fuse.

– 16 –

Connect to chassis ground of vehicle*

the connecting

® ®

Optional energy storage capacitor

1 farad • 20 VDC • 95°C

cap

punch

1.0

Page 20

Stereo Operation

Speaker + L –

0°-180

Gain

Unbal.

Bal.

Pass Thru

RCA Input

L (Mono)

® ®

N S T A L L A T

I O N

EZ-180°-0°

Bal.

Bridged

Input

Gain

Speaker – R +

–

• RCA inputs are connected to both

• Signal Input Switch selected to

• Left Phase Switch set to

• Right Phase Switch set to

0°

• Gain for left and right channels

• Impedance for

• XCard can be

each channel

should be

High-Pass, Low-Pass

Stereo/Mono Operation

Speaker

0°-180

+ L –

Gain

2Ω Min. 2Ω Min.

left and right

Unbalanced

channels

for RCA input

operate independently

2Ω minimum

Unbal.

Full Range

L (Mono) R

Bal.

Pass

Thru

RCA

Input

position

Bal.

Input

EZ-180°-0°

Bridged

–

Speaker

– R +

Gain

–

2Ω min. 2Ω min.

Speaker

Terminal

+–

–

4Ω min.

• RCA inputs are connected to both

• Signal Input Switch selected to

• Left Phase Switch set to

0°

• Right Phase Switch set to

left and right

Unbalanced

180°

for stereo/mono operation

for RCA input

channels

• All speaker polarity on right channel is inverted to correct for signal phase

• Gain for left and right channels set

• Impedance for

• XCard is in

each channel bridged channel

Full Range

position

equally

should be

to balance the subwoofer

2Ω minimum

4Ω minimum

• Passive crossovers are needed for proper stereo/mono operation

– 17 –

–

Speaker

Terminal

Page 21

Bridged Operation

RCA Input

® ®

N S T A L L A T I O N

Speaker + L –

0°-180

Gain

Unbal.

Bal.

Pass Thru

RL (Mono)

EZ-180°-0°

Bal.

Bridged

Input

Speaker

Terminal

+–

4Ω min.

• RCA inputs are connected to both

• Signal Input Switch selected to

• Left Phase Switch set to

0°

• Right Phase Switch set to

180°

left and right

Unbalanced

channels

for RCA input

• Inverting the right signal will allow the bridged woofer to operate correctly

• Gain for left and right channels

• Impedance for

• XCard is in

bridged channel

High-Pass, Low-Pass

EZ-Bridged Operation

set equally

should be

Full Range

to balance the subwoofer

4Ω minimum

position

Mono

Input

Gain

Speaker – R +

–

Speaker

Terminal

Speaker + L –

0°-180

Gain

Unbal.

Bal.

Pass Thru

L (Mono)

Speaker

Terminal

+–

4Ω min.

• RCA input is connected to

• Signal Input Switch to

• Left Phase Switch at

• Right Phase Switch set to

L (Mono)

Unbalanced

0°

E-Z Bridge

input

for RCA input

for the following to occur:

L (Mono) RCA input to drive both the left and right channels Left Gain will control both the left and right channels Right Phase will be inverted

180°

which will allow the bridged woofer to operate

correctly

• Impedance for

• XCard is in the

bridged channel

should be

High-Pass, Low-Pass

4Ω minimum

Full Range

position

Bal.

Input

EZ-180°-0

Bridged

Gain

Speaker – R +

–

Speaker

Terminal

– 18 –

Page 22

SING THE

The Punch 250.2 Power amplifier has a crossover switching network which enables you to:

• “Audiophile Bypass” the 250.2 and Pass-Thru

• Configure a 12dB per octave filter for both 250.2 and Pass-Thru

• “Audiophile Bypass” the 250.2 and configure a 12dB per octave filter for the Pass-Thru

• Configure a 24dB per octave filter for the 250.2 and “Audiophile Bypass” the Pass-Thru

• Configure a 12dB per octave bandpass filter for the 250.2 and “Audiophile Bypass” the Pass-Thru

The crossover switching network allows the crossover to be distributed to the amplifier and Pass Thru in many different configurations. The orientation of both switches configure the distribution pattern to where the crossover signal will be routed.

250.2 S

IGNAL

WITCHING

ETWORK

® ®

N S T A L L A T

I O N

XCard Options

Amplifier

XCard 1 XCard 2

Amplifier Amplifier

XCard 1 XCard 2

Audiophile Bypass

Not Used Not Used

XCard 1 XCard 2

Audiophile Bypass

Not Used

Amp Only

XCard 1 XCard 2

Pass Thru

POWER

with less than 0.05% THD + N from 20-20kHz

with less than 0.10% THD + N from 20-20kHz

*Bridging Note: The Punch 250.2 can be bridged in many configurations. Refer to your owner's manual to determine which mode will

250.

125 Watts X 2 into 4 Ohms

225 Watts X 2 into 2 Ohms

ROCKFORD CORPORATION

MADE IN THE USA

work best in your system.

AMPLIFIER

XCard 2

XCard 1

High-Pass

Low-Pass

Full Range

FULL

– 19 –

Page 23

“Audiophile Bypass” as it affects the output of the 250.2 and Pass-Thru.

XCard not required.

AUD

DISC

RDM

PWR

VOL

® ®

CLOCK

RPTLD

D.SCN

1 2 3 4 5 6

ILLUM

AUTO

P.SCN LOUDDSPL

RDM

DIM

RPT

SCAN

SEL

TUNE

PAUSE

XCard 1 XCard 2

® ®

N S T A L L A T I O N

Unbal.

Speaker

0°-180

+ L –

Bal.

Pass Thru

–

20Hz

Full Range

20kHz

+–

RL (Mono)

EZ-180°-0

Bal.

Bridged

Input

Speaker – R +

GainGain

–

20Hz

Full Range

20kHz

12dB/Octave Low-Pass

20Hz 20kHz

80Hz

• 250.2 bypasses the circuitry of XCard 1 and XCard 2

• Pass-Thru bypasses the circuitry of XCard 1 and XCard 2

• The 250.2 and Pass-Thru are in Audiophile Bypass mode which maintains signal integrity resulting in a better sounding amplifier

• The XCards do not need to be inserted to allow the 250.2 or Pass-Thru to operate

– 20–

Page 24

Configure a 12dB per octave filter for both the 250.2 and Pass-Thru.

250x XCard*

Pass Thru

XCard*

® ®

N S T A L L A T I O N

XCard 1 XCard 2

EZ-180°-0

Bridged

Speaker

– R +

GainGain

12dB/Octave High-Pass

–

AUD

DISC

PWR

VOL

® ®

RPTLD

RDM

CLOCK

D.SCN

1 2 3 4 5 6

AUTO

P.SCN LOUDDSPL

RPT

SCAN

Speaker + L –

ILLUM

RDM

0°-180

DIM

PAUSE

Unbal.

SEL

TUNE

RL (Mono)

Bal.

Pass Thru

Bal.

Input

–

12dB/Octave High-Pass

80Hz

20kHz

• 250.2 uses output from XCard 1

• Pass-Thru uses output from XCard 2

+–

12dB/Octave Low-Pass

20Hz 20kHz

80Hz

20Hz

80Hz20Hz

20kHz

– 21 –

Page 25

“Audiophile Bypass” the 250.2 and configure a 12dB per octave filter for the Pass-Thru.

® ®

N S T A L L A T I O N

XCard not required.

Pass Thru XCard

AUD

DISC

PWR

VOL

® ®

RPTLD

RDM

CLOCK

D.SCN

1 2 3 4 5 6

SCAN

Speaker

AUTO

P.SCN LOUDDSPL

RDM

RPT

+ L –

ILLUM

DIM

0°-180

SEL

TUNE

PAUSE

Unbal.

Bal.

Pass Thru

RL (Mono)

Bal.

Input

XCard 1 XCard 2

EZ-180°-0

Bridged

Speaker – R +

GainGain

–

20Hz

Full Range

20kHz

+–

12dB/Octave Low-Pass

20Hz 20kHz

80Hz

• 250.2 bypasses the circuitry of XCard 1

• Pass-Thru uses output from XCard 2

• The 250.2 is in Audiophile Bypass mode which maintains

signal integrity

sounding amplifier

• XCard 1 does not need to be inserted to allow the 250.2 to operate

Full Range

20Hz

resulting in a better

–

20kHz

– 22 –

Page 26

XCard 1

XCard 2

250x

XCard*

250x

XCard*

XCard 1

XCard 2

250x

XCard*

250x

XCard*

20Hz

20kHz

24dB/Octave High-Pass

Unbal.

Pass

Thru

Bal.

Input

0°-180

EZ-180°-0

Bridged

Gain

Bal.

–

+–

20Hz 20kHz

Full Range

20Hz

20kHz

24dB/Octave High-Pass

Speaker

+ L –

Speaker

– R +

L (Mono)

AUD

SEL

1 2 3 4 5 6

RDM

RPT

SCAN

PAUSE

D.SCN

DIM

RPTLD

RDM

DISC

P.SCN LOUDDSPL

CLOCK

ILLUM

PWR

AUTO

® ®

VOL

TUNE

20Hz

20kHz

12dB/Octave 100-275Hz

Unbal.

Pass

Thru

Bal.

Input

0°-180

EZ-180°-0

Bridged

Gain

Bal.

–

+–

20Hz 20kHz

Full Range

20Hz

20kHz

12dB/Octave 100-275Hz

Speaker

+ L –

L (Mono)

Speaker

– R +

AUD

SEL

1 2 3 4 5

RDM

RPT

SCAN

PAUSE

D.SCN

DIM

RPTLD

RDM

DISC

P.SCN LOUDDSPL

CLOCK

ILLUM

PWR

AUTO

VOL

TUNE

® ®

N S T A L L A T I O N

*Note: One XCard inserted HP,

other XCard inserted LP.

and “Audiophile Bypass” the Pass-Thru.

Configure a 12dB per octave bandpass filter for the

250.

and

is shipped with 80Hz XCards. At least one of the XCards

Configure a 24dB per octave filter for the 250.

“Audiophile Bypass” the Pass-Thru.

– 23 –

integrity resulting in a better sounding amplifier

• 250.2 uses output from XCard 1 and XCard 2

• Pass-Thru bypasses XCard 1 and XCard 2

• Pass-Thru is in Audiophile Bypass mode which maintains signal

*The 250.2

must be customized to enable proper bandpass operation. Refer to

“Using the XCard” on page 14 for more information. Additional crossover

card frequencies are available from your Authorized Rockford Fosgate

Dealer. (See page 40)

*Note: Both XCard inserted as

HP or LP.

Page 27

SING THE

The Balanced Line Inputs can be utilized with the optional Balanced Line Transmitter. Unlike standard RCA cables that use two wires to carry the audio signal and ground, balanced lines use three. In a balanced line, the output signal and its inverted replica travel down a pair of wires where the ground connects via the shield. As the amplifier receives the signals, it cancels out whatever signals are common to both wires. The use of balanced lines helps in preventing radiated noise pickup in the signal cables and has been proven effective in studio installation where long cable runs and magnetic fields make maintaining signal integrity difficult.

Connecting the BLT

250.2 B

ALANCED

INE INPUTS

Speaker

Gain

Phase

+ L –

0 – 180

• Signal Input Switch to

(Mono)

Bass EQ

Balanced

Unbalanced

Balanced

Pass Thru

for Balance Line Input

• Gain for Left and Right channels set to

– L. SIG + L. SIG

Balanced

Input

EZ Bridged

minimum

–18V

Gain

SHIELD

180°- 0°

+18V

Speaker

– R +

– R. SIG + R. SIG

BALANCED LINE TRANSMITTER

BALANCED LINE

OUTPUT

INPUT

LED

L R

CAUTION!! You must turn the gain controls to minimum when using the Balanced Line Transmitter. If the input gains need to be adjusted, this can now be done in the Balanced Line Transmitter.

– 24 –

Page 28

Level Setting the BLT

O p

8.0

VAC

–

AUD

DISC

RDM

PWR

VOL

® ®

1kHz Test Tone @ “0dB”

CLOCK

RPTLD

D.SCN

1 2 3 4 5 6

BALANCED LINE TRANSMITTER

ILLUM

AUTO

P.SCN LOUDDSPL

RDM

RPT

SCAN

SEL

DIM

TUNE

PAUSE

• Disconnect Speaker(s) from the 250.2

• CD Software used to set levels is a test tone of 1kHz at “0dB” or “All Bits High”

• Source Unit set to 3/4 volume (or maximum unclipped output)

• Remove BLT Cover to access

• AC Voltmeter set to

AC Volts

• AC Voltmeter “–” connected to

• AC Voltmeter “+” connected to

• Adjust BLT Gain from

2.5 VRMS min.

test pads

RCA shield

test pad

and

gain pots

of BLT

inside the BLT

8.0 VRMS max

per test pad (see chart below)

Be sure the time index reads greater than 30 seconds on source unit.

Gain Overlap BLT Output (AC Volts) Performance Characteristics

+0dB* 2.5 VRMS Best S/N Ratio, Reduced SPL

(Used for Optimum Sound Quality)

+5dB 4.5 VRMS Good S/N Ratio & SPL

(Use for Audiophile Listener)

+10dB 8.0 VRMS Best Compromise between S/N Ratio & SPL

(Used for Average Listener)

*Absence of gain overlap will reduce SPL and may not permit amplifier to reach full output power due to various CD software.

– 25 –

Page 29

250.1 I

NSTALLA TION

250.1 Power Connections (Option #1)

REM Dual B+ Dual GND

Connect to remote

turn-on lead of

source unit.

Less than 18"

Connect to chassis ground of vehicle*

® ®

N S

T A L L A

I O N

Connect to B+ of battery

with a 60 amp fuse.

*Keep ground connections as close to each other as possible.

250.1 Power Connections (Option #2)

REM Dual B+ Dual GND

Connect to remote

turn-on lead of

source unit.

Less than 18"

–

Connect to chassis ground of vehicle*

the connecting

® ®

Optional energy storage capacitor

1 farad • 20 VDC • 95°C

cap

punch

1.0

Connect to B+ of battery

with a 60 amp fuse.

*Keep ground connections as close to each other as possible.

– 26 –

Page 30

Mono Operation

RCA Input

® ®

N S T A L L A T I O N

• Signal Input Switch set to

• Phase Switch set to

• Impedance should be

• XCard can be set for

0°

2Ω minimum

High-Pass, Low-Pass

L (Mono)

Speaker

– +

–+

2Ω minimum

L+R

for RCA input

R Pass ThruL Pass Thru

Full Range

Gain

Power

L + R / L (Mono)

RCA Inputs

X-Over

24dB/12dB/0dB

0°-180°

– 27 –

Page 31

–

2Ω

minimum

RCA Input

–

2Ω

minimum

R Pass ThruL Pass Thru

Power

Gain

X-Over

24dB/12dB/0dB

L + R / L (Mono)

RCA Inputs

0°-180°

Speaker

– +

L (Mono)

R Pass ThruL Pass Thru

Power

Gain

X-Over

24dB/12dB/0dB

L + R / L (Mono)

RCA Inputs

0°-180°

Speaker

– +

L (Mono)

250.

® ®

N S T A L L A T I O N

1 Power Amplifiers

Full Range

for single RCA input)

L(Mono)

2Ω minimum

High-Pass, Low-Pass

0°

1 #1 / #2) set to

1 #1/2) set to

amplifier should be

each

amplifier can be set for

each

Stereo Operation using two Punch 250.

• Signal Input Switch (250.

• Phase Switch (250.

• Impedance for

• XCard for

– 28 –

Page 32

250.

–

RCA Input

–

+–

R Pass ThruL Pass Thru

Power

Gain

X-Over

24dB/12dB/0dB

L + R / L (Mono)

RCA Inputs

0°-180°

Speaker

– +

L (Mono)

2Ω minimum

high frequency

4Ω minimum

low frequency

+ Speaker

Terminal

– Speaker

Terminal

R Pass ThruL Pass Thru

Power

Gain

X-Over

24dB/12dB/0dB

L + R / L (Mono)

RCA Inputs

0°-180°

Speaker

– +

L (Mono)

2Ω minimum

high frequency

® ®

N S T A L L A T I O N

Stereo/Mono Operation

for single RCA input

2Ω minimum

L(Mono)

should be

0°

1 #1/#2) set to

180°

1 #1) set to

1 #2) set to

to balance the subwoofer

equally

each stereo channel

1 #1/#2) set

• Phase Switch (250.

• Signal Input Switch (250.

• Phase Switch (250.

• All speaker polarity on right amplifier is inverted to correct for signal phase

• Gain (250.

• Impedance for

4Ω minimum

should be

Full Range

are needed for proper stereo/mono operation

bridged channel

1 #1/#2) set to

• Impedance for

• XCard (250.

• Passive Crossovers

– 29 –

Page 33

250.

RCA Input

+–

Power

Gain

X-Over

24dB/12dB/0dB

L + R / L (Mono)

RCA Inputs

0°-180°

Speaker

– +

L (Mono)

4Ω minimum

+ Speaker

Terminal

R Pass ThruL Pass Thru

Power

Gain

X-Over

24dB/12dB/0dB

L + R / L (Mono)

RCA Inputs

0°-180°

Speaker

– +

L (Mono)

– Speaker

Terminal

® ®

N S

T A L L A

I O N

for RCA input

L+R

0°

180°

1 #2) set to

1 #1) set to

1 #2) set to

4Ω minimum

High-Pass, Low-Pass or Full Range

should be

to balance the subwoofer

equally

bridged channel

1#1/#2) set

1 #1/#2) set identically as

Bridged Mono Operation

• Signal Input Switch (250.

• Phase Switch (250.

• Gain (250.

• Phase Switch (250.

– 30 –

• Impedance for

• XCard (250.

Page 34

SING THE

“Audiophile Bypass” the 250.1

250.1 S

IGNAL SWITCHING

ETWORK

XCard not required.

® ®

N S T A L L A T I O N

Full Range

AUD

DISC

RDM

PWR

VOL

® ®

RPTLD

L (Mono)

D.SCN

CLOCK

1 2 3 4 5 6

ILLUM

AUTO

P.SCN LOUDDSPL

RDM

DIM

RPT

SCAN

Power

Speaker

– +

Gain

R Pass ThruL Pass Thru

SEL

TUNE

PAUSE

L + R / L (Mono)

RCA Inputs

X-Over

24dB/12dB/0dB

XCard

0°-180°

–

20Hz

20kHz

+–

Full Range

20kHz

• Xover is set to

20Hz

0dB

• The 250.1 is in Audiophile Bypass mode which maintains signal integrity resulting in a better sounding amplifier

• Pass-Thru has

Full Range

output only

• The XCard does not need to be inserted to allow the 250.1 to operate

– 31 –

Page 35

Configure a 12dB per octave filter for the 250.1

AUD

DISC

RDM

PWR

VOL

® ®

CLOCK

RPTLD

D.SCN

1 2 3 4 5 6

AUTO

P.SCN LOUDDSPL

RDM

RPT

SCAN

SEL

ILLUM

DIM

PAUSE

® ®

N S T A L L A T I O N

TUNE

XCard

–

12dB/Octave Low-Pass

20Hz 20kHz

• Xover is set to

• Pass-Thru has

20Hz

12dB

Full Range

Speaker

– +

Full Range

output only

L (Mono)

20kHz

Power

Gain

R Pass ThruL Pass Thru

L + R / L (Mono)

+–

RCA Inputs

X-Over

24dB/12dB/0dB

0°-180°

– 32 –

Page 36

Configure a 24dB per octave filter for the 250.1

® ®

N S T A L L A T I O

AUD

DISC

RDM

PWR

VOL

® ®

L (Mono)

CLOCK

RPTLD

D.SCN

1 2 3 4 5 6

ILLUM

AUTO

P.SCN LOUDDSPL

RDM

DIM

RPT

SCAN

Power

Speaker

– +

Gain

R Pass ThruL Pass Thru

SEL

TUNE

PAUSE

L + R / L (Mono)

RCA Inputs

X-Over

24dB/12dB/0dB

XCard

0°-180°

–

24dB/Octave Low-Pass

Full Range

20Hz

20kHz

+–

20kHz

• Xover is set to

• Pass-Thru has

24dB

Full Range

20Hz

output only

• By switching the crossover to 24dB, the signal is routed through the XCard twice

– 33 –

Page 37

YSTEM

IAGRAMS

250 Watt System (rated @ 4 ohms)

Total Power Delivery (RMS)

Tweeters 450 Watts Midrange 450 Watts

3kHz-20kHz

18dB/octave HP

80Hz-20kHz

24dB/octave HP

80Hz HP

PWR-14X

80Hz HP

TX-4183

AUD

PWR

VOL

PWR-54

4Ω

DISC

® ®

CLOCK

RPTLD

RDM

AUTO

P.SCN LOUDDSPL

RDM

RPT

SCAN

D.SCN

1 2 3 4 5 6

250.

SEL

ILLUM

DIM

TUNE

PAUSE

TX-4183

PWR-14X

TX-4183

3kHz-20kHz

18dB/octave HP

PWR-14X

PWR-54

4Ω

80Hz-20kHz

24dB/octave HP

– 34 –

Page 38

500 Watt System (rated @ 4 ohms)

Total Power Delivery (RMS)

Tweeters 450 Watts Midrange 450 Watts Woofers 500 Watts

3kHz-20kHz

18dB/octave HP

80Hz-20kHz

12dB/octave HP

80Hz HP

PWR-14X

Pass-Thru

80Hz LP

TX-4183

AUD

PWR

VOL

PWR-54

4Ω

DISC

® ®

CLOCK

RPTLD

RDM

AUTO

P.SCN LOUDDSPL

RDM

RPT

SCAN

D.SCN

1 2 3 4 5 6

SEL

ILLUM

DIM

TUNE

PAUSE

Pass-Thru

250.

TX-4183

PWR-14X

TX-4183

3kHz-20kHz

18dB/octave HP

PWR-14X

PWR-54

4Ω

80Hz-20kHz

24dB/octave HP

30Hz HP*

XCard

250.

30Hz High-Pass used

as a sub-sonic filter.

4Ω

30Hz-80Hz

12dB/octave BP

RFR-1415

• A sub-sonic filter is a high-pass filter that limits the input signal below a certain motion below that frequency. At very low frequencies a woofer has no output, just motion. If you try to drive this woofer at these lower frequencies, the woofer could self-destruct. Please refer to the crossover section of the manual or see your local Authorized Rockford Fosgate Dealer for more information.

– 35 –

Page 39

750 Watt System (rated @ 4 ohms)

Total Power Delivery (RMS)

Tweeters 450 Watts Midrange 450 Watts Midbass 250 Watts Woofers 500 Watts

Pass-Thru

400Hz HP

400Hz LP

AUD

DISC

PWR

VOL

® ®

RPTLD

RDM

CLOCK

D.SCN

1 2 3 4 5 6

ILLUM

AUTO

P.SCN LOUDDSPL

RDM

RPT

SCAN

DIM

SEL

TUNE

PAUSE

Pass-Thru

250.

3kHz-20kHz

18dB/octave HP

400Hz-20kHz

12dB/octave HP

80Hz-400Hz

12dB/octave BP

PWR-14X

80Hz HP

PWR-64

4Ω

TX-4183

Pass-Thru

80Hz LP

PWR-54

4Ω

TX-4183

PWR-14X

TX-4183

PWR-14X

PWR-54

4Ω

250.

PWR-64

4Ω

30Hz HP*

XCard

250.

30Hz High-Pass used

as a sub-sonic filter.

4Ω

30Hz-80Hz

12dB/octave BP

RFR-1415

– 36 –

Page 40

1000 Watt System (rated @ 4 ohms)

Total Power Delivery (RMS)

Tweeters 450 Watts Midrange 450 Watts Midbass 250 Watts Woofers 1000 Watts

Pass-Thru

400Hz HP

400Hz LP

AUD

DISC

PWR

VOL

® ®

RPTLD

RDM

CLOCK

D.SCN

1 2 3 4 5 6

ILLUM

AUTO

P.SCN LOUDDSPL

RDM

RPT

SCAN

DIM

SEL

TUNE

PAUSE

Pass-Thru

250.

3kHz-20kHz

18dB/octave HP

400Hz-20kHz

12dB/octave HP

8 0Hz-400Hz

12dB/octave BP

30Hz High-Pass used

as a sub-sonic filter.

PWR-14X

80Hz HP

PWR-64

4Ω

30Hz HP*

XCard

TX-4183

Pass-Thru

80Hz LP

PWR-54

4Ω

250.

PWR-54

Pass-Thru

4Ω

TX-4183

PWR-14X

PWR-64

4Ω

30Hz HP*

XCard

250.

30Hz High-Pass used

as a sub-sonic filter.

4Ω

30Hz-80Hz

12dB/octave BP

RFR-1415

4Ω

RFR-1415

30Hz-80Hz

12dB/octave BP

– 37 –

Page 41

OCKFORD

OSGATE

CCESSORIES

Balanced Line Transmitter (FG-BLT)

The Balanced Line Transmitter converts signal RCA cables from the source unit to balanced signals. The BLT improves sound quality in the system by eliminating noises generated by vehicle electrical systems. The BLT is available for Rockford Fosgate products that offer a balanced input.

Speaker

+ L –

AUD

DISC

PWR

VOL

® ®

RPTLD

RDM

CLOCK

ILLUM

AUTO

P.SCN LOUDDSPL

RDM

RPT

SCAN

D.SCN

1 2 3 4 5 6

DIM

SEL

TUNE

PAUSE

BALANCED LINE TRANSMITTER

NOISE

BALANCED LINE

OUTPUT

Pass Thru

Balanced

Input

Gain

Phase

0 – 180

Bass

Balanced

Unbalanced

(Mono)

EZ Bridged

Gain

180°- 0

Speaker – R +

INPUT

LED

L R

ATTENTION: We recommend your Authorized Rockford Fosgate Dealer install your new accessory.

– 38 –

Page 42

Energy Storage Capacitors

Energy Storage Capacitors are used to provide extra current needed by amplifiers to reproduce musical transients. The capacitors also have the natural ability to filter AC ripple caused by the alternator, reducing the chance of noise in the system. The capacitors are available in a variety of values and will maximize both the sound quality and performance that Rockford Fosgate amplifiers can deliver.

Power

Battery +

REM

Dual B+ Dual GND

® ®

the connecting

1.0

punch

cap

1 farad • 20 VDC • 95°C

• Recommended capacitance is 1 farad per 1000 watts

XCard Crossovers

Additional crossover card frequencies are available for specialized requirements. You can get the following XCards from your Authorized Rockford Fosgate Dealer.

XM50 = 50Hz XM200 = 200Hz XM70 = 70Hz XM275 = 275Hz XM80 = 80Hz XM400 = 400Hz XM100 = 100Hz XM4.5k = 4,500Hz XM150 = 150Hz XM6.5k = 6,500Hz

XM00 = Blank card for

custom crossover

Crossover Card

High Pass

Low Pass Full Range

FULL

ATTENTION: We recommend your Authorized Rockford Fosgate Dealer install your new accessory.

– 39 –

Page 43

ROUBLESHOOTING

Symptom Diagnosis Remedy

TROUBLE-

S H O O

I N G

Amplifier does not turn on.

(Power LED is off)

Amplifier has no sound.

(Power LED is on)

Voltage applied to the REM terminal of the amplifier is not between 10.5 and 15.5 volts or there is no voltage present.

Voltage to the B+ terminal of the amplifier is not between 10.5 and 15.5 volts or there is no voltage present.

Amplifier is not properly grounded.

RCA Input from source unit is not connected or not functioning properly.

When using the BLT, Balanced Line Input from BLT is not connected or not functioning properly.

Check the alternator, battery, fuse, and wiring and repair as necessary. If the voltage is above 15.5 volts, have the electrical system inspected by an authorized car service center.

Check wiring and repair as necessary.

Check connections, substitute with known working source and cables and repair or replace as necessary.

Check connections, substitute with known working BLT and cables and repair or replace as necessary.

Unbalanced/Balanced Line switch is not selected for corresponding input.

Amplifier is in E-Z Bridge operation but incorrect signal input, speaker wiring, and/ or left channel 180° phase selection is chosen.

XCards are missing or not placed properly in crossover slots and/or switches are not properly selected.

Speaker leads are shorted to each other or to the chassis of the vehicle.

Speakers are defective.

Check switch position and correct as necessary.

Check signal, speaker wiring, and left channel phase selection installation and correct as needed.

Check crossover switches and XCard positions and repair or replace as necessary.

Disconnect existing speakers and test with known working speakers and wires. If amplifier plays, check and repair wiring and installation of speakers as necessary.

Disconnect existing speakers and test with known working speakers. If amplifier plays, check and repair speakers as necessary.

– 40 –

Page 44

Symptom Diagnosis Remedy

Speaker Output Low or Distorted

Input gain(s) for amplifier incorrectly set.

Source unit output too low or source unit has no output.

Readjust input gains of amplifier.

Check system with known working source and repair or replace original source as needed.

TROUBLE-

S H O O T

I N G

Amplifier Noise

(Turn-on Pop)

Phase selection of amplifier incorrectly selected or speakers wired out of polarity from the left to right channel.

XCards are missing or not placed properly in crossover slots and/or switches are not properly selected.

Low battery voltage or large voltage drops to the amplifier under load.

Voltage spike from output of preceding component is entering amplifier through input signal.

Voltage spike from remote turn-on lead is entering through REM input terminal.

Check speaker polarity and phase switch position and correct as needed.

Check crossover switches and XCard positions and repair or replace as necessary.

Check the alternator, battery, fuse or circuit breaker and power and ground wiring and repair as necessary.

Disconnect input signal to amplifier and turn amplifier on and off. If noise is eliminated, connect REM lead of amplifier to source unit with a delay turn-on module.

Use different 12 volt source for REM lead of amplifier (i.e., battery direct). If noise is eliminated, use relay to isolate amplifier from noise turn-on output.

No output from Pass-Thru output of amplifier.

RCA Input from source unit is not connected or not functioning properly.

When using the BLT, Balanced Line Input from BLT is not connected or not functioning properly.

Unbalanced/Balanced Line switch is not selected for corresponding input.

XCards are missing or not placed properly in crossover slots.

Check connections, substitute with known working source and cables and repair or replace as necessary.

Check connections, substitute with known working BLT and cables and repair or replace as necessary.

Check switch position and correct as necessary.

Check crossover switches and XCard positions and repair or replace as necessary.

– 41 –

Page 45

Symptom Diagnosis Remedy

Low or distorted output from the Pass-Thru output of the amplifier.

Input gain(s) for amplifier incorrectly set.

Source unit output too low.

Readjust input gains of amplifier.

Check system with known working source and repair or replace original source as needed.

TROUBLE-

S H O O T I N G

XCards are missing or not placed properly in crossover slots and/or switches are not properly selected.

Low battery voltage or large voltage drops to the amplifier under load.

RCA cable or amplifier connected to PassThru output is defective.

• If noise persists, see your local Authorized Rockford Fosgate Dealer.

Check crossover switches and XCard positions and repair or replace as necessary.

Check the alternator, battery, fuse or circuit breaker and power and ground wiring and repair as necessary.

Check connections, substitute with known working amplifier or cables and repair or replace as needed.

– 42 –

Page 46

UTOSOUND

2000's

QUICK CHECK FOR TROUBLESHOOTING

CAR AUDIO SYSTEMS

Preface:

All audio systems exhibit noise; however, if the level of noise is low enough, and the signal level high enough, noise should not be a problem. This means that it is very important that the signal level throughout the system be optimized BEFORE dealing with your noise problem. Using a scope (or a small portable amplifier) and Track 99 (1kHz at all high bits) of Rockford Fosgate CD RFCD101 (Autosound 2000's CD #101) or Tracks 24 through 29 of Rockford Fosgate CD RF-CD102 (Autosound 2000's CD #102), adjust the system so that when the maximum usable signal level of the deck is fed into the system, all the preamp level components clip at the same time. However, we recommend up to as much as a 3:1 voltage overlap with the power amplifiers; i.e. an amplifier with a 2 volt minimum sensitivity can be driven by up to 6 volts of signal.

Noise Overview:

Car audio electrical accessories are notorious for interfering with car audio systems. The interference commonly arises from three areas:

1) Power line noise (5%), which can be attenuated with in-line noise filters,

2) Inadequate power supply isolation (45%), which can be cured with transformer signal coupling, additional isolated power supplies, or changing out components, or

3) Inductive interference (45%) – including loop area inductive noise picked up by the signal cables – which can be remedied by relocating or rewiring components, rerouting signal cables, or using twisted cable or balanced transmission systems.

Autosound 2000 1-2-3 Method of Logical Troubleshooting

I. MUTE THE AMP(S). Insert a muting plug (shorted male RCA connector) into each amplifier channel. Turn up the amp

sensitivity. Start the car and turn on the headlights, air conditioning, brake lights, etc. Listen for noise in each speaker. Be very picky here!

A. If still noisy, substitute a small test speaker with short leads for the speakers, crossovers, and speaker leads in the car . If still

noisy, substitute an isolated power supply (120 V AC to 13.8 VDC bench supply or a small motorcycle battery) for the car's alternator. If the amplifier is noisy with the test speaker, you have a BAD amp. Send it in. It really doesn't matter if it is quiet or noisy while running on the isolated supply because you have a BAD amp. Send it in for repair and if it was quiet on the isolated supply, indicate so on the repair tag.

B. If your muted amp is quiet, you've just joined 99.5% of car audio. Amps are usually very clean and do NOT pick up

unwanted noise! Continue on to Step II.

II. DECK TO AMP. Using a new set of signal cables, connect one channel from the output of the deck directly into one channel of

your clean amp. Run the cables outside the car and as far away as possible from the metal of the car. (For noise purposes, consider a 2" thick cushion of electromagnetic energy emanating from every metal surface in the car.)

A. If still noisy, congratulations, in all probability your equalizer , electronic crossover , DSP , whatchamacallit, are just fine . This

means that you can't get your deck playing quiet with your amp, right? Go to Step III.

B. If all is quiet, congratulations, in all probability your deck and amplifier(s) are fine – you obviously have a problem with

your equalizer, electronic crossover, DSP, etc. Skip on down to “Time for the Processors.”

– 43 –

Page 47

III. MOVE THE DECK. If you're at this step, it's time to turn your system into an “amplified deck” by temporarily relocating the deck

right ON TOP of the clean amplifier. Then using very, very short signal cables, connect the output of the deck into the input of the amp and test for noise. Play a zero bit track – silence – and make sure all is completely quiet. A. If still noisy, you're in a heap of trouble. We suggest that you try another deck and give us a call so that we can put your

name into the record books. It's a bad car audio day for you.

B. If the deck is quiet, then congratulations, you're on your way to a successful installation. It is now time to slowly, methodi-

cally, reinstall the deck back into its final position. T est for noise each step of the way . If the noise returns, suspect the signal cables. Forget shielding because it will have only a very, minimal effect within the audio band. We highly suggest using twisted pair cables or a balanced transmission system for cable induced noise.

Time for Processors:

By the end of Step III, you should have the deck playing quietly with the amp, with the quiet cables quietly routed. So it's time to add the signal processors – one at a time – back into the system. Simply repeat Steps II and III with the equalizer, then the electronic crossover, etc. However, before MOVING THE SIGNAL PROCESSORS to the amplifier, we highly suggest that you power the noisy process from an isolated power supply rather than the car's +12 volts DC and chassis ground. Make sure to also connect the turnon lead to the isolated power supply. If the processor is now quiet, then it is highly probable that the component has inadequate isolation. Solutions include changing components or permanently adding an external isolated power supply (Call Autosound 2000 at 209-465-3450 for info on isolated power supplies).

Summation:

During the design stage of your vehicles, try to avoid using extra batteries and high output alternators. Extra batteries are nothing but loads as soon as the engine is started and high output alternators usually make more noise than stock alternators. Also, extra batteries installed in the trunk of a car will ALWAYS force extra ripple current to flow over the car.

Install Stiffening Capacitors® as close to the power supply input of your amplifier as possible. The big caps will feed the switching power supplies of your amps and minimize the inductive losses in your power wiring. Plus, they will help your peak system response.

In problem cases, we highly recommend the use of twisted pair cable rather than coaxial cable for RCA leads. This practice will greatly minimize cable induced noise – especially in four channel amps!

Don't forget that your system is only as good as its worst component. Do NOT use components with inadequate power supply isolation or you will be asking for problems.

The best electrical ground on a car is the CHASSIS of the car. Do NOT run gr ound leads up to the case of the alternator or the negative battery post. Keep ALL ground leads as short as possible.

With properly isolated components, it does NOT matter where the component is grounded. We're sorry to say that with inadequately isolated components, it matters! With poorly isolated components, different grounds can cause different noises.

The deck is the signal reference ground for the entire sound system. The deck usually has THREE connections to the car's chassis: The black ground lead, the base of the antenna, and the metal-to-metal bond between the case of the deck and the chassis of the car. With three grounds, there is usually NO cause to worry about the ground of a deck.

Amplifiers are usually designed with adequate power supply isolation. This means that it should not matter where a deck is grounded. (Decks are grounded three times and amps float. This is car audio!)

The more components installed on a signal path, the more chances for noise to enter a system. The more electrical accessories on a car, the more noise will be produced by the alternator.

This information was compiled from more than 20 years of working in car audio. If you would like more information on this topic, or any other technical aspects of car audio, please call 800-548-8200 and ask for a subscription to Autosound 2000 T ech Briefs — the monthly magazine for the technically inclined.

– 44 –

Page 48

YNAMIC

OWER

EASUREMENTS

About the Dynamic Power Measurements

The Audio Graph PowerCube is a test instrument used to measure the output of an amplifier in accordance with IHF-202 industry standards. The IHF-202 standard is a dynamic power measurement and was developed as a means of measuring power in a manner that best represents the Real World operation of an amplifier. Many manufacturers, including Rockford Fosgate, at times will measure amplifier power into a fixed resistor (4 ohm, 2 ohm). While this method is useful in some types of evaluation and testing, it is not representative of an amplifier that is connected to a speaker and playing music.

Music

Music is dynamic; the sound waves are complex and constantly changing. In order to simulate this, the IHF-202 standard calls for the input signal to the amplifier to be a 1kHz bursted tone. This signal is input (on for 20 milliseconds) and reduced 20dB for 480 milliseconds. The signal is gradually increased in level until the amplifier's output exceeds 1% Total Harmonic Distortion (THD). At 1% distortion becomes audible, therefore, any power produced above that level is considered

unusable

manufacturers represent their amplifiers' output power in excess of 10% distortion. They use many names for this measurement, such as Total Maximum Power or Maximum Output Power. This is not indicative of the

actual usable output power

Listening to Loudspeakers - Not Resistors

A loudspeaker is not a resistor. A resistor's value (resistance measured in ohms) is fixed. A loudspeaker's impedance is dynamic. It is constantly changing in value, dependent upon the frequency of the input signal. Therefore, measuring power with the amplifier loaded into a 4 ohm resistor is not the same as measuring power with the amplifier connected to a 4 ohm speaker. Most people do not listen to music through a resistor.

A 4 ohm speaker may experience a drop in impedance 4-6 times lower than its nominal (printed) impedance. A speaker will also create phase shifts in the signal that is passed through it. These phase shifts happen because a speaker is an inductor (voice coil) and a capacitor (compliance of the surround/spider), as well as a resistor (voice coil wire).

. Many

To simulate a speaker the Audio Graph PowerCube measures output power into 20 different loads. It tests at 8 ohms, 4 ohms, 2 ohms and 1 ohm. Each of these impedances is also tested at –60°, –30°, 0°, +30° and +60° phase angles. These different impedances and phase angles represent the shifts in impedance and phase that can occur in a typical loudspeaker.

Information Cubed

The data acquired in the testing procedure is then graphed in the form of a 3-dimensional cube, hence the name PowerCube.

The

Phase Angle

the

Output Voltage

and the

Output Power,

is expressed on the horizontal axis,

is presented on the vertical axis

Impedance

is displayed on the Z axis.

in watts, is listed on the left hand side

for each impedance at each phase angle.

What is an Amplifier?

An amplifier by definition is a voltage generating device, recreating the signal which is input to it identically but with increased volume. It will be connected to a reactive load (the speaker). The impedance of this load and phase of the signal passing through the load will vary, dependent upon the frequency of the input signal (music).

Therefore, a perfect amplifier will be able to main-

Amplifier: Serial No: Owner :

8Ω –60°

–30°

30° 60°

4Ω –60°

–30°

30° 60°

2Ω –60°

IMPEDANCE

–30°

30° 60°

1Ω –60°

–30°

30° 60°

• Example of a Punch 200.2 PowerCube

Audio Graph – The PowerCube™

MODEL BEING

TESTED

PUNCH 200. ROCKFORD CORPORATION

85 W 84 W 84 W

0°

84 W

86 W 162 W 157 W 156 W

0°

157 W 162 W 273 W 258 W 251 W

0°

256 W 271 W 390 W 356 W 346 W

0°

352 W 390 W

VOLTAGE FROM

BATTERY

14.4V x 2

POWER

WATTS

{

–60° (Cap)

MONO = BRIDGED MONO

0°

{

PHASE ANGLES

x2 = STEREO

Rated Power : 100 W @ 4 Ohms

2Ω

1Ω

(Ind) +60°

{

Impedance

50V

30V

10V

OUTPUT VOLTAGE

8Ω

4Ω

tain the same output voltage regardless of load characteristics and will not alter the signal it is reproducing. A perfect amplifier when measured by the Audio Graph PowerCube would present data that forms a perfect cube. Unfortunately, amplifiers are not perfect. The laws of physics generally prevent it. A great amplifier is about the best one can hope to attain.

As you can see by the PowerCube and as you will experience by listening, your Punch amplifier is a GREAT AMPLIFIER!

– 45 –

Page 49

250.2 S

Dynamic Power Rating (IHF-202 Standard) - Measured at 14.4V Per channel into a 4Ω load 180 Watts Per channel into a 2Ω load 310 Watts Bridged into a 4Ω load 620 Watts

Continuous Power Rating (Competition Standard) - Measured at 13.8 Battery Volts RMS continuous power per channel, both channels driven into a 4Ω load from 20 to 20,000Hz with less than

0.05% THD (Total Harmonic Distortion) 125 Watts RMS continuous power per channel, both channels driven

into a 2Ω load from 20-20,000Hz, with less than 0.10% THD 225 Watts RMS continuous power mono, into 4Ω load

from 20-20,000Hz, with less than 0.1% THD 450 Watts Common Mode Rejection Ratio (CMRR): Typically 40dB Signal-to-Noise Ratio: >100dB (A-weighted) Frequency Response: 20Hz-20,000Hz ±0.5dB

PECIFICATIONS

Bandwidth: 10Hz–250kHz ±3dB Damping Factor @ 4Ω (at output connector): >200 Slew Rate: 50V ms IM Distortion (IHF): <0.05% Input Impedance: 20k Ohms Source Unit Compatibility (+15dB Gain Overlap) 28V max. input Input Sensitivity (+0dB Gain Overlap): Variable from 300mV to 5V Pass-Thru Output (ref. 1V input @ 1kHz): Variable form 100mV to 960mV B+ Fuse Size: (External to amplifier) 60 Amp or two 30 Amp Fuse Type: AGU / Maxi Fuse Crossover Slope: 12dB or 24dB/octave Butterworth Factory Crossover Frequency: 80Hz (0.047mf) Factory Default Crossover Setting: Full Range Dimensions: (including end caps) 9-5/8"W x 14-9/32"L x 2-5/8"H

(24.4cm) x (36.27cm) x (6.6cm)

Specifications subject to change without notice.

– 46 –

Page 50

250.1 S

Dynamic Power Rating (IHF-202 Standard) - Measured at 14.4V Mono into a 4Ω load 420 Watts Mono into a 2Ω load 710 Watts Bridged (using 2 Punch 250m) into a 4Ω load 1420 Watts*

Continuous Power Rating (Competition Standard) – Measured at 13.8 Volts RMS continuous power mono, into a 4Ω load from 20-20,000Hz with less than 0.10% THD 250 Watts

RMS continuous power mono, into a 2Ω load from 20-20,000Hz with less than 0.15% THD 500 Watts

RMS continuous power bridged, (using 2 Punch 250.1 Power amplifiers in the same system) into a 4Ω load from 20-20,000Hz with less than 0.15% THD 1000 Watts

Signal-to-Noise Ratio: >100dB (A-weighted) Frequency Response: 20Hz-20,000Hz ±0.5dB Bandwidth: 10Hz–250kHz ±3dB

PECIFICATIONS

Damping Factor @ 4Ω (at output connector): >200 Slew Rate: 50V ms IM Distortion (IHF): <0.05% Input Impedance: 20k Ohms Source Unit Compatibility (+15dB Gain Overlap): 28V max. input Input Sensitivity (+0dB Gain Overlap): Variable from 300mV to 5V Pass-Thru Output: Unity Gain B+ Fuse Size: (External to amplifier) 60 Amp or two 30 Amp Fuse Type: AGU / Maxi Fuse Crossover Slope: 12dB or 24dB/octave Butterworth Factory Crossover Frequency: 80Hz (0.047mf) Factory Default Crossover Setting: Full Range Dimensions: 9-5/8"W x 14-9/32"L x 2-5/8"H

(24.4cm) x (36.27cm) x (6.6cm)

*This is the calculated Dynamic Power Rating. Actual output power exceeded the input capability of the PowerCube.

Specifications subject to change without notice.

– 47 –

Page 51

IMITED

Rockford Corporation offers a limited warranty on Rockford Fosgate products on the following terms:

• Length of Warranty 3 years on electronics 90 days on electronic B-stock (receipt required) 2 years on source units 30 days on speaker B-stock (receipt required)

• What is Covered This warranty applies only to Rockford Fosgate products sold to consumers by Authorized Rockford Fosgate Dealers in the United States of America or its possessions. Product purchased by consumers from an Authorized Rockford Fosgate Dealer in another country are covered only by that country’s Distributor and not by Rockford Corporation.

• Who is Covered This warranty covers only the original purchaser of Rockford product purchased from an Authorized Rockford Fosgate Dealer in the United States. In order to receive service, the purchaser must provide Rockford with a copy of the receipt stating the customer name, dealer name, product purchased and date of purchase.

• Products found to be defective during the warranty period will be repaired or replaced (with a product deemed to be equivalent) at Rockford's discretion.

• What is Not Covered

1. Damage caused by accident, abuse, improper operations, water, theft

2. Any cost or expense related to the removal or reinstallation of product

3. Service performed by anyone other than Rockford or an Authorized Rockford Fosgate Service Center

4. Any product which has had the serial number defaced, altered, or removed

5. Subsequent damage to other components.

6. Any product purchased outside the U.S.

7. Any product not purchased from an Authorized Rockford Fosgate Dealer

ARRANTY

NFORMATION

• Limit on Implied Warranties Any implied warranties including warranties of fitness for use and merchantability are limited in duration to the period of the express warranty set forth above. Some states do not allow limitations on the length of an implied warranty, so this limitation may not apply. No person is authorized to assume for Rockford Fosgate any other liability in connection with the sale of the product.

• How to Obtain Service Please call 1-800-669-9899 for Rockford Customer Service. You must obtain an RA# (Return Authorization number) to return any product to Rockford Fosgate. You are responsible for shipment of product to Rockford.

Ship to: Electronics Rockford Corporation Warranty Repair Department 2055 E. 5th Street Tempe, AZ 85281 RA#:_________________

Ship to: Speakers Rockford Acoustic Design (Receiving-speakers) 609 Myrtle N.W. Grand Rapids, MI 49504 RA#:_________________

– 48 –

Page 52

I NTERNATIONAL

NFORMATION

– 49 –

Page 53

LEA DETENIDAMENTE LAS SIGUIENTES INSTRUCCIONES DE INSTALACIÓN DEL PRODUCTO. EVITARA POSIBLES DAÑOS A VD., AL VEHÍCULO O AL PRODUCTO.

NTRODUCCIÓN

Los amplificadores de “la serie 250” representan lo ultimo y mejor que Rockford Fosgate puede ofrecerle. Muchas soluciones que nuestros ingenieros han inventado serian consideradas absolutamente desproporcionadas por nuestra competencia. NO EN ROCKFORD FOSGATE! Trans• de las mas sobresalientes innovaciones que describimos con mas detalle en el capitulo de Caracteristicas Técnicas de Diseño en este mismo manual.

El 250.2 es un amplificador de dos canales optimizado para funcionar con cargas de 2Ω en estereo y 4Ω en mono. El

250.1 es un amplificador de un solo canal optimizado para trabajar con cargas de 2Ω (un solo amplificador) o 4Ω (dos amplificadores puenteados en un solo canal).

La “Serie 250” utiliza las tecnologias innovadoras de Rockford para conseguir una impresionante calidad de sonido, funcionamiento duradero y alta potencia de salida sobre bajas impedancias. Todo esto son ventajas para los vehiculos de competicion.

BICACIÓN DE LOS

nova

, DIAMOND y TOPAZ diseños exclusivos de Rockford Fosgate, son solo algunas

MPLIFICADORES

Maletero

Monte el amplificador vertical con las altas de refrigeración de arriba a abajo. Es el método correcto para asegurarse la máxima disipación de calor.

Habitáculo

El amplificador montado en el habitáculo funcionara bien en la medida en que se le proporcione ventilación suficiente para refrigerarse. Si piensa en montarlo debajo de un asiento deberá dejar como minimo un espacio de 3cm alrededor del refrigerador.

Instalación

• Por seguridad desconecte el cable de masa de la bateria antes de empezar la instalación.

Terminal B+

El cable de alimentación deberá tener un fusible como máximo a 30cm de la bateria. Prepare los terminales del cable e instale el portafusibles en el vano motor (si la bateria estuviera alli ubicada). Recuerde que toda la instalación debe ser impermeable.

Terminal GND (Masa o negativo)

Prepare un trozo de cable para usarlo como toma de masa. Prepare el chasis rascando toda la pintura y suciedad que pudiera haber hasta dejar la chapa viva. Conecte el chasis a masa con un tornillo.

Terminal REM (Remoto)

Conecte el terminal REM a un punto de 12V con interruptor. Normalmente se usa la salida Remote o de alimentación de antena del Radio Cassette. Si el Radio Cassette no la tuviera o no estuviera disponible se recomienda tomar de la caja de fusibles 12V y colocar un interruptor para asi activar el amplificador.

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Page 54

Operación mono/estéreo

Speaker

0°-180

+ L –

Gain

Unbal.

Bal.

L (Mono) R

Pass

Thru

RCA

Input

ESPAÑOL

EZ-180°-0

Gain

Speaker

– R +

Bal.

Bridged

Input

–

2Ω min. 2Ω min.

Speaker

Terminal

+–

4Ω min.

• Los conectores de entrada RCA se conectan a ambos

–

Speaker

Terminal

canales derecho e

izquierdo

• El conmutador de señal de entrada se colocara en

Unbalanced

para las

entradas RCA

• El conmutador de fase del canal izquierdo estará en

• El conmutador de fase del canal derecho estará en

0 grados

180 grados

cuando se

requiera operación mono/estéro

• La ganancia de los dos canales derecho e izquierdo deberán ser

iguales

para balancear correctamente el subgrave

• La impedancia minima para

cada canal

es de

2 Ω

• La impedancia minima cuando se trabaje en puente será de

exactamente

4Ω

• Deberá seleccionarse una XCard (tarjeta del divisor de frecuencias) de banda completa

• Passive crossovers are needed for proper stereo/mono operation

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Page 55

ATTENTION: Veuillez lire les instructions suivants pour l'nstallation de ce produit. Ne pas les suivre pourrait causer des blessures ou endommager le véhicule.

NTRODUCTION

La série d'amplificateurs Power 250 est la vitrine technologique de Rockford Fosgate. Nos ingénieurs utilisent ici des technologies considérées hors d'atteinte par d'autres fabricants. Trans• par Rockford Fosgate, ne sont qu'une partie des technologies spécifiques décrites dans la section “Technical Design Features” de ce manuel.

Le 250.2 est un amplificateur à deux canaux optimisé pour des charges de 2Ω stéréo et de 4Ω mono. Le 250.1 est un amplificateur mono optimisé pour une charge de 2Ω (un ampli) ou 4Ω (deux amplis 250.1 pontés ensemble).

La serie “250” utilise les technologies innovatives de Rockford qui lui donne cette impressionante qualité sonore, cette fiabilité et cette incroyable puissance à de basses impédance. Ceci constitue un avantage sérieux pour des véhicules de compétition.

ONTAGE

nova

, DIAMOND et TOPAZ, exclusivement conçues

Montage dans le coffre

Monter l'ampificateur verticalement avec les rainures de haut en bas ce qui lui permet de refroidir plus facilement.

Montage dans l'habitacle

Monter l'ampificateur dans l'habitacle ne pose aucun problème, du moment qu'il y ait assez d'air pour le refroidir. Si vous montez l'ampli en dessous de siège, prévoyez 3cm d'air autour du radiateur.

Installation

Pour votre sécurité, déconnectez la borne négative de la batterie du véhicule avant de commencer l'installation.

Terminal B+

Il est impératif qu'il y ait un fusible sur le câble d'alimentation positif le plus près possible de la borne (maximum 30cm). Préparez les extrémités du câble et installez le porte fusible sous le capot. Les connexions doivent être étanches.

Terminal GND

Préparez une longueur de câble pour la connexion à la masse. Préparez le châssis en grattant la peinture de la surface métallique et nettoyez la saleté et l'huile. Attachez le câble au châssis avec une vis.

Terminal REM

Connectez le fill REM à une commande 12 volts positive de la source. La commande 12 volts est habituellement prise sur la sortie antenne électrique de la source ou la commande accessoire. Si la source ne dispose pas de ces sorties, nous vous recommandons d'installer un interrupteur qui fournira un positif 12 volts au REM de l'ampificateur.

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Page 56

Opération stéréo/mono (Trimode)

Speaker

0°-180

+ L –

Gain

Unbal.

Bal.

L (Mono) R

Pass

Thru

RCA

Input

EZ-180°-0

Gain

Speaker

– R +

Bal.

Bridged

Input

–

2Ω min. 2Ω min.

Speaker

Terminal

+–

–

Speaker

Terminal

4Ω min.

• Les entrées RCA sont connectées aux canaux gauche et droit

• L'interrupteur “Signal Input” doit se trouver dans la position “Unbalanced” pour utiliser l'entrée RCA

• L'interrupteur “Left Phase” doit se trouver dans la position “0°”

• L'interrupteur “Right Phase” doit se trouver dans la position “180°” pour operation en tri-mode

• Les gains des canaux gauche et droit sont réglés de la même manière pour équilibrer le subwoofer

• L'impédance de chaque canal devrait être de

• L'impédance du canal mono devrait être de

• Les XCards sont introduites sur

fall range

minimum 2Ω

minimum 4Ω

• Il est conseillé d'utiliser les filtre passifs lorsqu'on fait fonctionner l'amplificateur en tri-mode

• NE connecter AUCUN des câbles HP à la masse au risque d'un fonctionnement instable.

• Les filtres passifs sont nécessaires pour une utilisation correcte stereo/mono

FRANÇAIS

– 53 –

Page 57

Bitte lesen Sie diese Gebrauchsanleitung zuerst sorgfältig durch. Das kann Sie vor dem falschen Einsatz, Ausfallen oder sogar Beschädigung des Produktes oder Ihres Fahrzeuges schützen.

INLEITUNG

Die “250 Serie” Power Verstärker repräsentiert das Beste, was Rockford Fosgate anzubiete hat! Unsere Ingenieure haben in diesen Verstärkern technische Features realisiert, die in der gesamten Auto HiFi-Industrie, einzigartig sind. Trans• DIAMOND und TOPAZ exklusive entwickelt von Rockford. Nähere Informationen hierüber und weitere Beschreibungen finden sie in dieser Gebrauchsanweisung unter Technical Design Features.

Die 250.2 ist ein 2-Kanal Verstärker der an einer last von 2 Ohm Stereo und Mono gebrückt an 4 Ohm optimale Leistung zeigt. Die 250.1 ist eine Endstufe die optimal an 2 Ohm arbeitet (single amp) oder beim Zusammenschlieβen von zwei Verstärkern (ein Paar 250.1, gebrückt an eine Lautsprecherlast) an 4 Ohm.

Die “250 zieger Serie” verwendet Rockford's innovative Technologien für einzigartige Klangqualität, zuverlässige Arbeitsweise und unendliche Leistung an niedriger Impendanz. Ihr Vorteil beim Bau von ernstzunehmenden Wettberwerbs-Fahrzeugen!

INBAUORT

nova

Im Fahrzeugkofferraum

Der vertikale Einbau der Endstufen, das bedeutet, daβ die Kühlrippen von oben nach unten verlaufen, gibt dem Verstärker die beste Kühlung.

Auf der Beifahrerseite

Sollte der Verstärker auf der Beifahrerseite montiert werden, so ist es sehr wichtig, für eine ausreichende Kühlung zu sorgen. Sollte der Verstärker z.B. unter dem Beifahrersitz montiert werden, sollte dem Kühlkörper mindestens ein Luftspalt von 3cm bleiben, um so für eine ausreichende Kühlung zu sorgen.

Einbau

Zur Sicherheit klemmen Sie den Negativ-Pol der Batterie während des gesamten Einbaues ab.

B+ Anschluβ

Die Plus-Leitung muβ ca. 40cm nach dem Plus-Pol der Batterie abgesichert sein. Preparieren Sie die Kabellängen und montieren Sie den Sicherungshalter im Motorraum. ALLE Verbindungen müssen wasserdicht sein.

GND Anschluβ

Preparieren Sie Ihr Kabel für die Negativ Leitung (Erdung). Preparieren Sie die Anschluβstelle des Erdungskabels, indem Sie das Metall gründlich reinigen und vom Lack befreien. Befestigen Sie nun die Erdung an dieser Stelle mit einer Schraube.

REM Anschluβ

Verbinden Sie das Ein-und Ausschaltkontroll-Kabel mit Ihrem Radio (12 Volt positiv). Normalerweise verwenden Sie hierfür die Ant.-Remote Ihres Radios oder ein eigens dafür vorgesehenes Kabel (Amp-Remote). Sollte Ihr Radio diesen Anschluβ nicht besitzen, so verwenden Sie ein 12 Volt Spannung, die Sie durch eine Schalter ein - und ausschalten können.

– 54 –

Page 58

Stereo/Mono Betrieb

Speaker

+ L –

0°-180

Gain

Unbal.

Bal.

L (Mono) R

Pass Thru

RCA

Input

EZ-180°-0°

Bal.

Bridged

Input

Gain

Speaker

– R +

–

2Ω min. 2Ω min.

Speaker

Terminal

+–

–

Speaker

Terminal

4Ω min.

• Chinch Eingänge des rechten und linken Kanales anschlieben

• Signal Eingangsschalter auf “unbalanced” für den Betrieb mit Chinch-Kabel stellen

• Linken Phasen Schalter auf 0° stellen

• Rechten Phasen Schalter auf 180° stellen für den Stereo/Mono Betrieb

• Die Lautsprecher-Phase des rechten Kanales umkehren, um eine Phasenkorrektur zu erreichen

• Gain Regler des linken Kanales angleichen, um die Lautstärke des Subwoofers einzustellen

• Impendanz für jeden Kanal sollte minimum

• Impendanz im Brückenbetrieb sollte minimum

2 Ohm

4 Ohm

betragen

• XCard sollte auf Full Range gesteckt werder

• Passive Frequenzweichen werden für korrekte Stereo/Mono Operationen benötigt

– 55 –

DEUTSCH

Page 59

PREGO LEGGERE LE SEGUENTI ISTRUZIONI PER L'INSTALLAZIONE DI QUESTO PRODOTTO, IL NON SEGUIRLE POTREBBE RISULTARE SERIAMENTE DANNOSO PER LA PERSONA O PER IL VEICOLO.

NTRODUZIONE

La serie 250 Power rappresenta il massimo che Rockford Fosgate ha da offrire! I nostri ingenieri hanno sviluppato delle

innovazioni tecnologiche che per altri costruttori sono considerate fantascienza, ma non per Rockford Fosgate! Trans• DIAMOND e TOPAZ, esclusivamente progettati da Rockford, sono solo alcune delle innovazioni descritte nella sezione specifica del manuale.

Il 250.2 é un amplificatore a due canali ottimizzato per pilotare carichi di 2Ω stereo e di 4Ω in mono. Il 250.1 é un amplificatore ad un canale (mono) ottimizzato per pilotare carichi di 2Ω (singolo amplificatore) o di 4Ω a ponte (due amplificatore ponticellati funzionanti sullo stesso sistema di altoparlanti).

La “serie 250” impiega tutte le piú innovative tecnologie proprie di Rockford per ottenere una superba qualitá timbrica, grande affidabilitá, ed elevatissima potenza su carichi molto bassi. Tutto questo á di grande beneficio per le auto che ambiscono a vincere le gare.

OVE

OSIZIONARLO

nova

Nel Bagagliaio

Montando l'amplificatore su una superficie in verticale con le alette direzionate dall'alto verso il basso si garantirá un miglior raffreddamento dell'amplificatore.

Nell'abitacolo

Montare l'amplificatore nell'abitacolo si avrá un funzionamento regolare se si garantisce un flusso d'aria sufficiente. Per l'installazione sotto un sedile, é necessario avere uno spazio di almeno 3 cm attorno a tutto l'amplificatore.

Installazione

Per sicurezza, scollegare il polo negativo della batteria dell'auto prima di iniziare l'installazione.

Terminale B+ (cavo positivo)

Il cavo positivo deve essere protetto da un fusibile a non piú di 45 cm dalla batteria. Terminare il cavo e installare il fusibile nel vano motore. Tutte le connessioni devono essere a prova d'acqua.

Terminale GND (cavo negativo)

Decidere la lunghezza del cavo e terminarlo. Preparare la massa grattando la vernice dal telaio dell'auto ed eliminando tracce di olio o sporco. Fissare il cavo di massa al telaio con una vite.

Terminale REM (Consenso di accensione)

Collegare il cavo REM ad un positivo presente solo ad autoradio accesa (normalmente il cavo pilota dell'antenna elettrica o il cavo accessori dell'autoradio). Se la sorgente non dovesse essere equipaggiata con queste uscite, la soluzione raccomandabile é di inserire un interruttore su un cavo positivo e connettersi all'amplificatore.

– 56 –

Page 60

Stereo/Mono Operation

Speaker

+ L –

0°-180

Gain

Unbal.

Bal.

L (Mono) R

Pass Thru

RCA

Input

EZ-180°-0

Gain

Speaker

– R +

Bal.

Bridged

Input

–

2Ω min. 2Ω min.

Speaker

Terminal

+–

–

Speaker

Terminal

4Ω min.

• RCA inputs non sono collegati ad entrambi, i canli destro e sinistro

• Interruttore di segnale input selezionato per il non bilanciamento per l'input RCA

• Fase sinistra dell'interruttore posizionata su 0°.

• Fase destra dell'interruttore posizionata su

180°

per l'operazione stereo/mono

• Tutta la polaritá dell'altoparlante del canale destro é invertita per correggere il segnale di fase

• Gain per i canali destro e sinistro posizionati ugualmente per bilanciare i subwoofer

• Impedenza per ogni canale deve essere

• Impedenza per i canali a ponte deve essere

• XCard é posizionata per

tutto il range

minimo 2Ω

minimo 4Ω

• Crossover passivi sono indispensabili per un corretto funzionamento stereo/

mono

– 57 –

ITALIANO

Page 61

MAN-1529-B 10/97

MADE IN THE USA

This product is designed, developed and assembled in the USA by a dedicated

group of American workers. The majority of the components used in the construc-

tion of this product are produced by American companies. However, due to the

global nature of their manufacturing facilities and the loudspeaker parts industry in

general, some parts may be manufactured in other countries.

Rockford Fosgate

Rockford Corporation

546 South Rockford Drive

Tempe, Arizona 85281 U.S.A.

In U.S.A., (602) 967-3565

In Europe, Fax (49) 4202-9750-50

In Japan, Fax (81) 559-79-1265

Rockford Fosgate 250.2, 250.1 User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual