Rockford Fosgate 250.1 manual W I R I N G T H E S Y S T E M

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W I R I N G T H E S Y S T E M

W I R I N G T H E S Y S T E M

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.

STRIP WIRE

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5/8"

AMP

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INSULATION

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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.

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.

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Contents power powerpower 250.1PRACTICE SAFE SOUND TA B L E O F CO N T E N T S G E T T I N G S T A R T E DPunch Power Punch PowerINTRODUCTION TO 250 SERIES TOPAZ Tracking Operation Pre-AmplifierZone TECHNICAL DESIGN FEATURESDIABLO Dynamically Invariant A-BLinear Operation trans nova circuitryXCard Internal Crossover Stereo Pass-ThruDSM Discrete Surface Mount Technology ITS Increased Thermal Stability Balanced Line InputsNOMAD NOn-MultiplyingAdvanced Decision 250.2 DE S I G N FE AT U R E S PLIFIER 250.1 DE S I G N FE AT U R E S 1AMPLIFIER INSTALLATION CONSIDERATIONS Tools NeededPassenger Compartment Mounting BATTERY AND CHARGINGTrunk Mounting Engine Compartment MountingW I R I N G T H E S Y S T E M USING PASSIVE CROSSOVERS 6 dB/Octave Low-Pass TABLE OF CROSSOVER COMPONENT VALUES6 dB/Octave High-Pass FreqHigh-Pass US I N G T H E XCARDCU S T O M I Z I N G T H E XCA R D Low-Pass1% resistors used with 0.047∝ F capacitors XCA R D RESISTOR CHARTButterworth Alignment Q = Butterworth Alignment Q =250.2 Power Connections Option #2 250.2 INSTALLATION250.2 Power Connections Option #1 Left Phase Switch set to Stereo OperationStereo/Mono Operation Right Phase Switch set toLeft Phase Switch set to Bridged OperationEZ-BridgedOperation Right Phase Switch set toPage XCard not required 250.2 uses output from XCard Pass-Thru uses output from XCardPage filterfor Configurea12dBperConfigurea24dBperoctave and“AudiophileBypass”the Pass-ThruUSING THE 250.2 BALANCED LINE INPUTS Connecting the BLTPerformance Characteristics Level Setting the BLT8.0 VAC Disconnect Speakers from the250.1 Power Connections Option #2 250.1 INSTALLATION250.1 Power Connections Option #1 minimum Mono OperationPhase Switch set to AmplifiersPower orFullRangeImpedanceforbridgedchannelshouldbe4Ω minimum Stereo/Mono OperationImpedanceforeachstereochannelshouldbe2Ω minimum Impedanceforbridgedchannelshouldbe4Ω Bridged Mono Operationminimum Pass,-High -LoworPass RangeFull“Audiophile Bypass” the U S I N G T H E 250.1 SIGNALS W I T C H I N G N E T W O R K LOUD Configure a 12dB per octave filter for theXCard TUNEConfigure a 24dB per octave filter for the Total Power Delivery RMS SY S T E M DI A G R A M S250 Watt System rated @ 4 ohms 500 Watt System rated @ 4 ohms Total Power Delivery RMSTweeters 750 Watt System rated @ 4 ohmsTotal Power Delivery RMS 450 WattsTweeters 1000 Watt System rated @ 4 ohmsTotal Power Delivery RMS WattsBalanced Line Transmitter FG-BLT ROCKFORD FOSGATE ACCESSORIESNOISE Channel A monitors left channel Punch Status Display FG-PSDPunch Status Display connected to one Channel B monitors right channelXCard Crossovers punchEnergy Storage Capacitors 1.0capDiagnosis SymptomTR O U B L E S H O O T I N G RemedyRemedy SymptomDiagnosis Speaker Output LowRemedy SymptomDiagnosis Low or distorted output fromPreface QUICK CHECK FOR TROUBLESHOOTING CAR AUDIO SYSTEMSAUTOSOUND 2000s Noise OverviewTime for Processors SummationWhat is an Amplifier? DY N A M I C PO W E R ME A S U R E M E N T SAbout the Dynamic Power Measurements Music180Watts 310Watts 620Watts 125Watts 225Watts 250.2 SP E C I F I C AT I O N SSpecifications subject to change without notice 450 Watts420Watts 710Watts 1420 Watts 250Watts 500 Watts 250.1 SP E C I F I C AT I O N SSpecifications subject to change without notice 1000 WattsWhat is Covered LIMITED WA R R A N T Y IN F O R M AT I O NLength of Warranty What is Not CoveredN F O R M A T I O N Maletero INTRODUCCIÓNUBICACIÓN DE LOS AMPLIFICADORES HabitáculoOperación mono/estéreo MONTAGE InstallationINTRODUCTION Montage dans le coffrePage DEUTSCH EINLEITUNGEINBAUORT Im FahrzeugkofferraumLinken Phasen Schalter auf 0 stellen Stereo/Mono BetriebDOVE POSIZIONARLO InstallazioneINTRODUZIONE ITALIANOStereo/Mono Operation Fase sinistra dellinterruttore posizionata suMADE IN THE USA
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