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Rockford Fosgate 40X2 manual U S I N G T H E Xcard, 3386, The actual formula is, = R in kΩ

Models: 40X2

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U S I N G T H E XCARD

U S 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 100Hz 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 ampli- fier. Firmly, but carefully, plug the card into the socket.

High-Pass


➝LP				➝
➝LP			HP

Low-Pass


➝HP			LP➝

Full Range

FULL ↕

The crossover point can be altered by changing the resistor value. 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	= R (in kΩ	) for .047∝ f cap
	fo
	7234 = R (in kΩ		) for .022∝ f cap
	fo

AO

DP

VE

AR

A N T C I E O

D N

	The actual formula is:
	R =	1	R1
	R =	2π foc

Where: R = Ω

fo = desired crossover frequency c = capacitor in farads

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

Crossover Card

R2	Pass	R1
Low Pass
Full Range

FULL

R2

– 12 –

Image 15

Rockford Fosgate 40X2 manual U S I N G T H E Xcard, 3386, The actual formula is, = R in kΩ, for .047∝ f cap

Contents

2-CHANNEL AMPLIFIERS OPERATION & INSTALLATION PRACTICE SAFE SOUND G E T T I N G S T A R T E D T A B L E O F C O N T E N T SI N T R O D U C T I O N PUNCH AMPLIFIER ACCESSORY PACKTOPAZ Tracking Operation Pre-AmplifierZone TECHNICAL DESIGN FEATURESTRANS ANA TRANSconductance Active Nodal AmplifierXCard Internal Crossover DSM Discrete Surface Mount TechnologyNOMAD NOn-MultiplyingAdvanced Decision MOSFET DevicesDESIGN FEATURES Front XCard IN S TA L L AT I O N CO N S I D E R AT I O N S Engine Compartment Mounting MOUNTING LOCATIONTrunk Mounting Passenger Compartment MountingW I R I N G T H E S Y S T E M BATTERY AND CHARGINGPunch PunchPage = R in kΩ U S I N G T H E XCARD3386 The actual formula is1% resistors used with 0.047∝ F caps RESISTOR CHARTButterworth Alignment Q = Butterworth Alignment Q =Power Connections INSTALLATIONStereo Operation Mono Operation Stereo/Mono Operation PCH-142X 2-WaySystemSY S T E M DI A G R A M S 12dB/octave HPPCH-142X 3-WaySystem12dB/octave HP Rear100Hz 12dB/octave LP4-WaySystem 4-WaySystem w/Fadable Rear Stage Channel B monitors right channel Punch Status Display FG-PSDRO C K F O R D FO S G AT E AC C E S S O R I E S Channel A monitors left channelEnergy Storage Capacitors Punch Link FG-LINK XCard Crossovers Diagnosis T R O U B L E S H O O T I N GSymptom RemedySpeaker Output DiagnosisSymptom RemedyEngine Noise SymptomRemedy DiagnosisListening to Loudspeakers - Not Resistors About the Dynamic Power MeasurementsD Y N A M I C P O W E R M E A S U R E M E N T S MusicInformation Cubed What is an Amplifier?PUNCH40x PUNCH200xPUNCH100x PUNCH60xPage W A R R A N T Y I N F O R M A T I O N N F O R M A T I O N Montaje en el Compartimento de Pasajeros INTRODUCCIONUBICACIÓN PARA EL MONTAJE Montaje en el MalateroXCard en Full Range Terminal GNDTerminal REM Funcionamiento Estereo/MonoMontage dans le coffre InstallationINTRODUCTION MONTAGETerminal GND Terminal REMLes XCard sont introduites sur full range Auf der Beifahrerseite EINLEITUNGEINBAUORT Im FahrzeugkofferraumGND Anschluss REM AnschlussStereo/Mono Operation Nel Bagagliaio InstallazioneINTRODUZIONE DOVE POSIZIONARLOTerminale GND cavo negativo Terminale REM Consenso di accensioneStereo/Mono Operation N O T E S N O T E S Rockford Fosgate MADE IN THE USA