Rockford-fosgate 125.2 User Manual

® ®car audiofanaticsforpunch2-Channel AmplifiersOperation & Installationtrans•anatrans•anatrans•anatrans•ana®

INSTALLATION CONSIDERATIONSThe following is a list of tools you will need for installing the Punch amplifier:Allen wrenches 9/64" & 3/32"

MOUNTING LOCATIONThe mounting location and position of your amplifier will have a great effecton its ability to dissipate the heat generated during no

BATTERY AND CHARGING– 9 –Amplifiers will put an increased load on the vehicle's battery and chargingsystem. We recommend checking your alternator

– 10 –Punch 55.2, 75.2, 125.2Trim the power cable to within 18" of the battery and install the protectiverubber boot, which is packed with the fu

amplifier. Connect the other end of the REM wire to a switched 12 voltpositive source. The switched signal is usually taken from the sourceunit's

USING PASSIVE CROSSOVERSA passive crossover is a circuit that uses capacitors and/or coils and is placedon speaker leads between the amplifier and spe

TABLE OF CROSSOVER COMPONENT VALUES6dB/Octave Low-Pass6dB/Octave High-PassFreq.HertzSpeaker Impedance80 4.1mH 1000µF 8.2mH 500µF 16mH 250µF100 3.1mH 8

– 14 –3386fo= R (in kΩ) for .047µf cap= R (in kΩ) for .022µf cap7234foWhere: R = Ωfo = desired crossover frequencyc = capacitor in faradsex: .047 x 10

RESISTOR CHART– 15 –Frequency R1 R220Hz 169kΩ 169kΩ25Hz 133kΩ 133kΩ30Hz 110kΩ 110kΩ35Hz 95.3kΩ 95.3kΩ40Hz 84.5kΩ 84.5kΩ45Hz 75kΩ 75kΩ50Hz 68.1kΩ 68.1k

– 16 –INSTALLATION*Keep grounds as short as possiblePower ConnectionsINSTALLATION® ®LEDConnect to remoteturn-on lead ofsource unitConnect to chassisgr

Dear Customer,Congratulations on your purchase of the world's finest brand of car audio amplifiers.At Rockford Fosgate we are fanatics about musi

– 17 –INSTALLATION® ®Stereo OperationBassRightGainRightInputLeftInputLeftGainTreble–++L–Speaker+R–Speaker–+RCA Input2Ω min.2Ω min.• RCA inputs are con

– 18 –INSTALLATION® ®BassRightGainRightInputLeftInputLeftGainTreble+–+L–Speaker+R–SpeakerRCA Input4Ω min.Mono Operation• RCA inputs are connected to

– 19 –INSTALLATION® ®• RCA inputs are connected to both left and right channels• Gain for left and right channels are set equally to balance thesubwoo

– 20 –SYSTEM DIAGRAMS2-Way SystemCrossoverTweeterMidrange80Hz HPXCard12dB/octave HP80HzCrossoverTweeterMidrangeAUDSEL1 2 3 4 5 6RDMRPTSCANPAUSED.SCNDI

– 21 –3-Way SystemCrossoverTweeterMidrange8ΩWoofer8ΩWooferFrontRear80Hz LPXCard80Hz HPXCard12dB/octave HP80Hz12dB/octave LP80HzCrossoverTweeterMidrang

– 22 –4-Way SystemCrossoverTweeterMidrangeCrossoverTweeterMidrangeFrontWoofer8Ω80Hz HP24dB/octave HP80Hz24dB/octave HP12dB/octave LP275Hz30Hz12dB/octa

4-Way System w/Fadable Rear Stage– 23 –CrossoverTweeterMidrangeCrossoverTweeterMidrange80Hz HPXCard275Hz LPXCardFrontWoofer8Ω80Hz LPXCard80Hz HP24dB/o

Energy Storage CapacitorsEnergy storage capacitors are used to provide extra current needed byamplifiers to reproduce musical transients. The capacito

XCard CrossoversAdditional crossover card frequencies are available for specialized require-ments. You can get the following XCards from your Authoriz

– 26 –TROUBLESHOOTINGAmplifier does notturn on(Power LED is off)Symptom Diagnosis RemedyVoltage applied to the REMterminal of the amplifier isnot betw

TABLE OF CONTENTSIntroduction...1Punch Amplifier Accessor

– 27 –Speaker OutputLow or DistortedReadjust input gains of amplifier.Check system with known work-ing source and repair or replaceoriginal source as

– 28 –Noise is radiating into RCAsignal cable.Bad component in the sig-nal chain.Noise is radiating intospeaker cables.Multiple grounds in theaudio sy

– 29 –DYNAMIC POWER MEASUREMENTSAbout the Dynamic Power MeasurementsThe Audio Graph PowerCube is a test instrument used to measure the output ofan amp

Information CubedThe data acquired in the testing procedure is then graphed in the form of a3-dimensional cube, hence the name PowerCube.The Phase Ang

– 31 –PUNCH 55.2PUNCH 75.2 PUNCH 125.2 PUNCH 225.2Dynamic Power Rating (IHF-202 Standard) - Measured at 14.4 VoltsMono into a 4Ω Load 240 Watts 320 Wa

PUNCH 55.2PUNCH 75.2PUNCH 125.2 PUNCH 225.2Dimensions 95/8" (24.4cm) W 95/8" (24.4cm) W 95/8" (24.4cm) W 95/8" (24.4cm) W109

LIMITED WARRANTY INFORMATION– 33 –Ship to: SpeakersRockford Acoustic Design(Receiving-speakers)609 Myrtle N.W.Grand Rapids, MI 49504RA#:____________

INTERNATIONALI NFORMATION– 34 –

LEA DETENIDAMENTE LAS SIGUIENTES INSTRUCCIONES DE INSTALACION DELPRODUCTO. EVITARA POSIBLES DAÑOS A VD., AL VEHICULO O AL PRODUCTO.Montaje en el Malat

BassRightGainRightInputLeftInputLeftGainTreble+L–SpeakerRCA Input+–4Ω min.–+–++R–Speaker2Ω min. 2Ω min.Funcionamiento Estereo/Mono• Las entradas RCA s

INTRODUCTIONRockford engineers designed the Punch 55.2, 75.2, 125.2 and 225.2amplifiers to withstand the rugged automotive environment while deliveri

ATTENTION: Veuillez lire les instructions suivantes pour l'installation de cetamplifcateur. Ne pas les suivre pourrait causer des blessures ou en

Terminal GNDPréparez une longueur de câble pour la connexion à la masse. Préparez le châssisen grattant la peinture de la surface métallique et nettoy

BITTE LESEN SIE DIESE GEBRAUCHSANLEITUNG ZUERST SORGFÄLTIG DURCH.DAS KANN SIE VOR DEM FALSCHEN EINSATZ, AUSFALLEN ODER SOGARBESCHÄDIGUNG DES PRODUKTES

GND AnschluβPreparieren Sie Ihr Kabel für die Negativ Leitung (Erdung). Preparieren Siedie Anschlubstelle des Erdungskabels, indem Sie das Metall grün

ATTENZIONE: SI PREGA DI LEGGERE LE SEGUENTI ISTRUZIONI PER L'INSTALLAZIONEDI QUESTO PRODOTTO. IL NON SEGUIRLE POTREBBE RISULTARE SERIAMENTEDANNOS

Terminale GND (cavo negativo)Decidere la lunghezza del cavo e terminarlo. Preparare la massa grattandola vernice dal telaio dell'auto ed eliminan

NOTES

NOTES

10/97MAN-1849-AMADE IN THE USAThis product is designed, developed and assembled in the USA by a dedicated group ofAmerican workers. The majority of th

TECHNICAL DESIGN FEATURES– 2 –◆ TRANS•ANA(TRANSconductance Active Nodal Amplifier)The TRANS•ANA (TRANSconductance Active Nodal Amplifier) is a circuit

◆ DSM (Discrete Surface Mount) TechnologyThe DSM (Discrete Surface Mount) manufacturing process combines theadvantages of both discrete components and

◆ MOSFET DevicesRockford Fosgate is one of the few manufacturers in the sound communityto utilize MOSFET devices in both the power supply and the outp

DESIGN FEATURES 1. Cast Aluminum Heatsink – The cast aluminum heatsink of the Punchamplifier dissipates heat generated by the amplifier's circuit

7. Input Sensitivity Controls – The input level controls are preset tomatch the output of most source units. They can be adjusted to matchoutput lev