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Rockford Fosgate 400x4 operation manual 400X4 S P E C I F I C A T I O N S, Watts

Models: 400x4

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400X4 S P E C I F I C A T I O N S

Continuous Power Rating (Competition Standard) – Measured at 13.8V

RMS continuous power per channel, all channels50 Watts driven into a 4Ω load from 20-20,000Hz with

less than 0.05% Total Harmonic Distortion (THD)

RMS continuous power per channel, all channels			100 Watts
driven into a 2Ω load from 20-20000Hz, with
less than 0.1% Total Harmonic Distortion (THD)
RMS continuous power bridged into a 4Ω load			200 Watts
from 20-20000Hz, with less than 0.1%
Total Harmonic Distortion (THD)
Dynamic Power Rating (IHF-202 Standard) – Measured at 14.4V
2-Channel bridged into a 4Ω load			260 Watts
per channel into a 2Ω	load		130 Watts
per channel into a 4Ω	load		60 Watts
Signal-to-Noise Ratio (A-weighted)			>95dB
Factory Default Crossover Point		100Hz Butterworth
Crossover Alignment		12dB/octave
Dimensions		95⁄8"W x 135⁄8"L x 25⁄8"H
		(24.4cm) x (34.6cm) x (6.6cm)
Damping Factor @ 4Ω	(at output connector)	>150
Bandwidth		15Hz-100kHz ± 3dB
Frequency Response		20Hz-20kHz ± 0.5dB
Slew Rate		30 V/∝ s
IM Distortion (IHF)		<0.05%
Input Sensitivity		Variable from 150mV to 3V
		Preset at the factory for 500mV
B+ Fuse Size (external to amplifier)		AGU 50 amp
Input Impedance		20k ohms

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Rockford Fosgate 400x4 operation manual 400X4 S P E C I F I C A T I O N S, Watts

Contents

MANUAL 4-CHANNEL AMPLIFIER INSTALLATION & OPERATIONt r a n s a n a Page PRACTICE SAFE SOUND TA B L E O F C O N T E N T S G E T T I N G S T A R T E DI N T R O D U C T I O N Energy Storage Capacitor Punch Link FG-LINKXCard RO C K F O R D FO S G AT E AC C E S S O R I E STRANS ANA TRANSconductance Active Nodal Amplifier TECHNICAL DESIGN FEATURESTOPAZ Tracking Operation Pre-AmplifierZone XCard Internal Crossover DSM Discrete Surface Mount TechnologyRTP Real Time Protection MOSFET DevicesNOMAD NOn-MultiplyingAdvanced Decision Pass-ThruOutput DESIGN FEATURES 4AMPLIFIER IN S TA L L AT I O N CO N S I D E R AT I O N S MOUNTING LOCATION Trunk MountingPassenger Compartment Mounting Engine Compartment MountingBATTERY AND CHARGING W I R I N G T H E S Y S T E MPage Page U S I N G T H E XCARD XCARD CONFIGURATIONS Front XCard set to High-Passor Low-PassRear XCard 1 set to High-Passor Low-Pass Rear XCard 2 set to Full RangeRear XCard 1 inserted as High-Pass Rear XCard 2 inserted as Low-PassConfigure a 12dB/octave filter for the Pass-Thru Pass-ThruXCard set to High-Passor Low-Pass2-ChannelInput USING THE SIGNAL INPUT SWITCHPass-Thru is a non-fadingsummed output 4-ChannelInput Signal Input Switch set to 4-channelinputPass-Thru is a non-fadingsummed output BA S I C CO N N E C T I O N S Power ConnectionsKeep grounds as short as possible Less thanPhase Switch set to 2-ChannelStereo OperationPhase Switch set to 2-ChannelMono Operation3-ChannelOperation Phase Switch set to 4-ChannelStereo OperationPhase Switch set to 4-ChannelStereo/Single Mono OperationPhase Switch set to 4-ChannelStereo/Dual Mono OperationSY S T E M DI A G R A M S 200 Watt 3-WaySystem400 Watt 4-WaySystem 600 Watt 4-WaySystem 800 Watt 4-WaySystem T R O U B L E S H O O T I N G SymptomRemedy DiagnosisSymptom RemedyDiagnosis Speaker OutputSymptom RemedyDiagnosis Engine NoiseD Y N A M I C P O W E R M E A S U R E M E N T S About the Dynamic Power MeasurementsMusic Listening to Loudspeakers - Not ResistorsWhat is an Amplifier? Information Cubed400X4 S P E C I F I C A T I O N S 260 Watts130 Watts 60 WattsW A R R A N T Y I N F O R M A T I O N Return Authorization NumberShip to Tempe, AZ 85281 U.S.APage Page Rockford Fosgate Rockford Corporation 546 South Rockford DriveTempe, Arizona 85281 U.S.A In U.S.A In Europe, Fax 49 In Japan, Fax 81