Rockford Fosgate 250.1 Us I N G T H E Xcard, Cu S T O M I Z I N G T H E Xca R D, High-Pass, 3386

Page 17

US I N G T H E XCARD

US I N G T H E XCARD

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.

High-Pass


➝LP				➝
➝LP			HP

Low-Pass


➝HP			LP➝

Full Range

FULL ↕

CU S T O M I Z I N G T H E XCA R D

AO

DP

VE

AR

A N T C I E O

D N

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

= R (in kΩ

) for .047∝ f cap

fo

7234

= R (in kΩ

) for .022∝ f cap

fo

	Crossover Card
R1	R2 Pass	R1	FULLR2
	Low Pass
	Full Range

The actual formula is: R =		1
The actual formula is: R =	2π f c
		o

Where: R = Ω

fo = desired crossover frequency c = capacitor in farads

ex: .047 x 10-6for .047mf cap

– 14 –

Image 17

Contents power powerpower 250.1PRACTICE SAFE SOUND G E T T I N G S T A R T E D TA B L E O F CO N T E N T SPunch Power Punch PowerINTRODUCTION TO 250 SERIES DIABLO Dynamically Invariant A-BLinear Operation TECHNICAL DESIGN FEATURESTOPAZ Tracking Operation Pre-AmplifierZone 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 Tools Needed INSTALLATION CONSIDERATIONSTrunk Mounting BATTERY AND CHARGINGPassenger Compartment Mounting Engine Compartment MountingW I R I N G T H E S Y S T E M USING PASSIVE CROSSOVERS 6 dB/Octave High-Pass TABLE OF CROSSOVER COMPONENT VALUES6 dB/Octave Low-Pass FreqCU S T O M I Z I N G T H E XCA R D US I N G T H E XCARDHigh-Pass Low-PassButterworth Alignment Q = XCA R D RESISTOR CHART1% resistors used with 0.047∝ F capacitors Butterworth Alignment Q =250.2 Power Connections Option #2 250.2 INSTALLATION250.2 Power Connections Option #1 Stereo/Mono Operation Stereo OperationLeft Phase Switch set to Right Phase Switch set toEZ-BridgedOperation Bridged OperationLeft Phase Switch set to Right Phase Switch set toPage XCard not required Pass-Thru uses output from XCard 250.2 uses output from XCardPage Configurea24dBperoctave and“AudiophileBypass”the Configurea12dBperfilterfor Pass-ThruConnecting the BLT USING THE 250.2 BALANCED LINE INPUTS8.0 VAC Level Setting the BLTPerformance Characteristics Disconnect Speakers from the250.1 Power Connections Option #2 250.1 INSTALLATION250.1 Power Connections Option #1 minimum Mono OperationPhase Switch set to orFullRange AmplifiersPowerImpedanceforbridgedchannelshouldbe4Ω minimum Stereo/Mono OperationImpedanceforeachstereochannelshouldbe2Ω minimum minimum Bridged Mono OperationImpedanceforbridgedchannelshouldbe4Ω 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 XCard Configure a 12dB per octave filter for theLOUD 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 Total Power Delivery RMS 500 Watt System rated @ 4 ohmsTotal Power Delivery RMS 750 Watt System rated @ 4 ohmsTweeters 450 WattsTotal Power Delivery RMS 1000 Watt System rated @ 4 ohmsTweeters WattsBalanced Line Transmitter FG-BLT ROCKFORD FOSGATE ACCESSORIESNOISE Punch Status Display connected to one Punch Status Display FG-PSDChannel A monitors left channel Channel B monitors right channelEnergy Storage Capacitors punchXCard Crossovers 1.0capTR O U B L E S H O O T I N G SymptomDiagnosis RemedyDiagnosis SymptomRemedy Speaker Output LowDiagnosis SymptomRemedy Low or distorted output fromAUTOSOUND 2000s QUICK CHECK FOR TROUBLESHOOTING CAR AUDIO SYSTEMSPreface Noise OverviewSummation Time for ProcessorsAbout the Dynamic Power Measurements DY N A M I C PO W E R ME A S U R E M E N T SWhat is an Amplifier? MusicSpecifications subject to change without notice 250.2 SP E C I F I C AT I O N S180Watts 310Watts 620Watts 125Watts 225Watts 450 WattsSpecifications subject to change without notice 250.1 SP E C I F I C AT I O N S420Watts 710Watts 1420 Watts 250Watts 500 Watts 1000 WattsLength of Warranty LIMITED WA R R A N T Y IN F O R M AT I O NWhat is Covered What is Not CoveredN F O R M A T I O N UBICACIÓN DE LOS AMPLIFICADORES INTRODUCCIÓNMaletero HabitáculoOperación mono/estéreo INTRODUCTION InstallationMONTAGE Montage dans le coffrePage EINBAUORT EINLEITUNGDEUTSCH Im FahrzeugkofferraumStereo/Mono Betrieb Linken Phasen Schalter auf 0 stellenINTRODUZIONE InstallazioneDOVE POSIZIONARLO ITALIANOFase sinistra dellinterruttore posizionata su Stereo/Mono OperationMADE IN THE USA