Rockford Fosgate 250.1 Operation & Installation
Rockford Fosgate 250.1 Operation & Installation

Rockford Fosgate 250.1 Operation & Installation

Competition power amplifiers

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250.
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250.
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Operation & Installation
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Summary of Contents for Rockford Fosgate 250.1

  • Page 1 250. p o w e r ® 250. p o w e r competition Power amplifiers Operation & Installation ® ®...
  • Page 2: Practice Safe Sound

    If, after reading your manual, you still have questions regarding this product, we recommend that you see your Rockford Fosgate dealer. If you need further assistance, you can call us direct at 1-800-795-2385. Be sure to have your serial number, model number and date of purchase available when you call.
  • Page 3: Table Of Contents

    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.
  • Page 4: Introduction

    (4) End cap mounting screws (9/64" allen) (1) Allen wrench 3/32" (1) Allen wrench 9/64" 250 S ERIES C C E S S O R Y Punch Power 250.1 Installation & Operation Manual Punch Verification Certificate ⁄ " phillips) (4) Amplifier mounting screws (#8 x (6) Speaker &...
  • Page 5: Technical Design Features

    ECHNICAL ESIGN 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. 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.
  • Page 6 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.
  • Page 7 THE RESULT: Extremely fast protection system that always protects the amplifier and never degrades the sound. MOSFET Devices Rockford Fosgate is one of the few manufacturers in any of the sound communities to utilize MOSFET devices in both the power supply and the output stages . MOSFET (Metal Oxide Semiconductor Field Effect Transistor) devices offer several important inherent advantages over the 30 year old technology of bi-polar design.
  • Page 8: Design Features

    250. E S I G N Cast Aluminum 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. End Caps –...
  • Page 9 Input Sensitivity Controls – The input level controls are preset to match the output of most source units. They can be adjusted to match output levels from a variety of source units. Internal Crossovers – These built-in crossover cards are configurable for a multitude of operating frequencies.
  • Page 10: Design Features

    250. E S I G N Cast Aluminum 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. End Caps –...
  • Page 11 Internal Crossover – This built-in crossover card is configurable for a multitude of operating frequencies. The orientation of the card in its socket determines the function of high-pass, low-pass or full range operation. Phase Switch – This switch enables you to easily invert the phase without having to disconnect the speaker wires.
  • Page 12: Installation Considerations

    N S TA LLATIO N 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 strippers Battery post wrench Electric hand drill and assorted bits This section focuses on some of the vehicle considerations for installing your new Punch amplifier.
  • Page 13: Mounting Locations

    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.
  • Page 14: Wiring The System

    I R I N G 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 15: Using Passive Crossovers

    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”...
  • Page 16: Table Of Crossover Components

    4000 .08mH 6000 51 H 9000 34 H 12000 25 H 6 dB/Octave High-Pass and Low-Pass Filters For more information, see your Authorized Rockford Fosgate Dealer. OMPONENT 6 dB/Octave High-Pass Speaker Impedance 4 OHMS 1000 F 8.2mH 500 F 16mH 800 F 6.2mH...
  • Page 17: Using The Xcard

    S I N G T H E 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.
  • Page 18: Xcard Resistor Chart

    A R D ESISTOR Our tests have shown that using 0.047 f capacitors for frequencies below 100Hz, and 0.022 f 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. Butterworth Alignment Q = .707 1% resistors used with 0.047 F capacitors Frequency...
  • Page 19: Installation

    250. NSTALLATION 250. Power Connections (Option #1) Power Less than 18" *Keep wire as short as possible. 250. Power Connections (Option #2) Power Less than 18" *Keep wire as short as possible. Dual B+ Dual GND Punch Status Connect to remote turn-on lead of Connect to source unit.
  • Page 20: Stereo Operation

    Stereo Operation Unbal. Speaker 0 -180 Bal. + L – Gain – • RCA inputs are connected to both left and right channels • Signal Input Switch selected to Unbalanced for RCA input • Left Phase Switch set to 0 •...
  • Page 21 Bridged Operation Unbal. Speaker 0 -180 Bal. + L – Gain Speaker Terminal • RCA inputs are connected to both left and right channels • Signal Input Switch selected to Unbalanced for RCA input • Left Phase Switch set to 0 •...
  • Page 22 250. S I N G T H E W I T C H I N G The Punch 250. Power amplifier has a crossover switching network which enables you to: • “Audiophile Bypass” the 250. • Configure a 12dB per octave filter for both 250. •...
  • Page 23 “Audiophile Bypass” as it affects the output of the 250. CLOCK AUTO ILLUM DISC DSPL P.SCN LOUD AM FM LD RDM D.SCN SCAN PAUSE ® ® Speaker 0 -180 + L – Full Range – 20kHz 20Hz • 250. bypasses the circuitry of XCard 1 and XCard 2 •...
  • Page 24 Configure a 12dB per octave filter for both the 250. CLOCK AUTO ILLUM DISC DSPL P.SCN LOUD AM FM LD RDM SCAN D.SCN ® ® Speaker 0 -180 + L – Gain – 12dB/Octave High-Pass 20kHz 20Hz 80Hz • 250. uses output from XCard 1 •...
  • Page 25 “Audiophile Bypass” the 250. for the Pass-Thru. CLOCK AUTO ILLUM DISC DSPL P.SCN LOUD AM FM LD RDM D.SCN SCAN PAUSE ® ® Speaker 0 -180 + L – Gain – Full Range 20kHz 20Hz • 250. bypasses the circuitry of XCard 1 •...
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  • Page 27: Using The 250. 2 Internal Switching Network

    250. 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.
  • Page 28 Level Setting the BLT 1kHz Test Tone @ “0dB” – • Disconnect Speaker(s) from the 250. • 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) •...
  • Page 29: Installation

    250. NSTALLATION 250. Power Connections (Option #1) Connect to remote turn-on lead of source unit. Less than 18" *Keep ground connections as close to each other as possible. 250. Power Connections (Option #2) Connect to remote turn-on lead of source unit. Less than 18"...
  • Page 30: Mono Operation

    Mono Operation L (Mono) R Speaker – Punch Status Display L Pass Thru – 2 minimum • Signal Input Switch set to L+R for RCA input • Phase Switch set to 0 • Impedance should be 2 minimum • XCard can be set for High-Pass , Low-Pass or Full Range RCA Input Power X-Over...
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  • Page 34: Using The 250. 1 Internal Switching Network

    250. S I N G T H E W I T C H I N G “Audiophile Bypass” the 250. CLOCK AUTO DISC DSPL P.SCN AM FM LD RDM D.SCN SCAN ® ® Full Range – 20Hz • Xover is set to 0dB •...
  • Page 35 Configure a 12dB per octave filter for the 250. DISC AM FM ® Speaker – Punch Status Display – 12dB/Octave Low-Pass Full Range 20Hz 20kHz 20Hz • Xover is set to 12dB • Pass-Thru has Full Range output only CLOCK AUTO ILLUM DSPL...
  • Page 36 Configure a 24dB per octave filter for the 250. Speaker – Punch Status Display – 24dB/Octave Low-Pass Full Range 20kHz 20Hz 20Hz • Xover is set to 24dB • Pass-Thru has Full Range output only • By switching the crossover to 24dB, the signal is routed through the XCard twice CLOCK AUTO ILLUM...
  • Page 37: System Diagrams

    Y S T E M I A G R A M S 250 Watt System (rated @ 4 ohms) Total Power Delivery (RMS) Tweeters 450 Watts Midrange 450 Watts 80Hz HP 80Hz HP TX-4183 PWR-14X TX-4183 3kHz-20kHz 18dB/octave HP PWR-14X 80Hz-20kHz 24dB/octave HP CLOCK...
  • Page 38 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.
  • Page 39 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.
  • Page 40 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.
  • Page 41: Rockford Fosgate Accessories

    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. Unbal.
  • Page 42 250. • Punch Status Display connected to a pair of 250. • Channel A monitors left 250. • Channel B monitors right 250. ATTENTION: We recommend your Authorized Rockford Fosgate Dealer install your new accessory. Punch Status Display POWER SIGNAL...
  • Page 43: Xcard Crossovers

    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. Battery + •...
  • Page 44 R O U B L E S H O O T I N G Symptom Amplifier does not turn on. (Power LED is off) Amplifier has no sound. (Power LED is on) Diagnosis Voltage applied to the REM terminal of the amplifier is not between 10.5 and 15.5 volts or there is no voltage present.
  • Page 45 Symptom Speaker Output Low Input gain(s) for amplifier incorrectly or Distorted set. Source unit output too low or source unit has no output. Phase selection of amplifier incorrectly selected or speakers wired out of polar- ity from the left to right channel. XCards are missing or not placed prop- erly in crossover slots and/or switches are not properly selected.
  • Page 46 Symptom Low or distorted output from the Pass-Thru output of the amplifier. • If noise persists, see your local Authorized Rockford Fosgate Dealer. Diagnosis Input gain(s) for amplifier incorrectly set. Source unit output too low. XCards are missing or not placed prop- erly in crossover slots and/or switches are not properly selected.
  • Page 47: Troubleshooting

    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 RF-CD101 (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.
  • Page 48 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.
  • Page 49 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.
  • Page 50: Specifications

    250. P E C I F I C AT I O N S Dynamic Power Rating (IHF-202 Standard) - Measured at 14.4V Per channel into a 4 load Per channel into a 2 load Bridged into a 4 load Continuous Power Rating (Competition Standard) - Measured at 13.8 Battery Volts RMS continuous power per channel, both channels driven into a 4 load from 20 to 20,000Hz with less than 0.05% THD (Total Harmonic Distortion)
  • Page 51: Specifications

    250. P E C I F I C AT I O N S Dynamic Power Rating (IHF-202 Standard) - Measured at 14.4V Mono into a 4 load Mono into a 2 load Bridged (using 2 Punch 250m) into a 4 load Continuous Power Rating (Competition Standard) –...
  • Page 52: Warranty Information

    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.
  • Page 53: International Information

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  • Page 54 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• nova , DIABLO y TOPAZ diseños exclusivos de Rockford Fosgate, son solo algunas de las mas sobresalientes innovaciones que describimos con mas detalle en el capitulo de Caracteristicas Técnicas de Diseño en este mismo manual.
  • Page 55 Operación mono/estéreo Input Unbal. L (Mono) R Speaker 0 -180 Bal. + L – Pass Thru Gain – 2 min. Speaker Terminal 4 min. • Los conectores de entrada RCA se conectan a ambos canales derecho e izquierdo • El conmutador de señal de entrada se colocara en Unbalanced para las entradas RCA •...
  • Page 56 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• nova , DIABLO et TOPAZ, exclusivement conçues par Rockford Fosgate, ne sont qu'une partie des technologies spécifiques décrites dans la section “Technical Design Features”...
  • Page 57 Opération stéréo/mono (Tri-mode) Unbal. L (Mono) R Speaker 0 -180 Bal. + L – Pass Thru Gain – 2 min. Speaker Terminal • Les entrées RCA sont connectées aux canaux gauche et droit • L'interrupteur “Signal Input” doit se trouver dans la position “Unbal- anced”...
  • Page 58 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• nova , DIABLO und TOPAZ exklusive entwickelt von Rockford. Nähere Informationen hierüber und weitere Beschreibungen finden sie in dieser Gebrauchsanweisung unter Technical Design Features.
  • Page 59 Stereo/Mono Betrieb Unbal. L (Mono) R Speaker 0 -180 Bal. + L – Pass Thru Gain – 2 min. Speaker Terminal • Chinch Eingänge des rechten und linken Kanales anschlie en • Signal Eingangsschalter auf “unbalanced” für den Betrieb mit Chinch-Kabel stellen •...
  • Page 60 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•...
  • Page 61 Stereo/Mono Operation Input Unbal. L (Mono) R Speaker 0 -180 Bal. + L – Pass Thru Gain – 2 min. Speaker Terminal • 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 •...
  • Page 62 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.

This manual is also suitable for:

Power 250.1Power 250.2

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