Rockford Fosgate 5.3x manual Using Passive Crossovers

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USING PASSIVE CROSSOVERS

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A N T C I E O

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A passive crossover is a circuit that uses capacitors and/or coils and is placed on speaker leads between the amplifier and speaker. The crossover delegates a specific range of frequencies to the speaker for optimum driver performance. A crossover network can perform one of three functions: High-Pass (capacitors), Low-Pass (inductors or coils) and Bandpass (combination of capacitor and coil).

The most commonly used passive crossover networks are 6dB/octave systems. These are easy to construct and require one component per filter. Placing this filter in series with the circuit will reduce power to the speaker by 6dB/octave above or below the crossover point depending on whether it is a high-pass or low-pass filter. More complex systems such as 12dB/octave or 18dB/octave can cause impedance problems if not professionally designed.

Passive crossovers are directly dependent upon the speaker's imped- ance and component value for accuracy. When passive crossover components are used in multiple speaker systems, the crossover's effect on the overall impedance should be taken into consideration along with the speaker's impedance when determining amplifier loads. CAUTION: The Rockford Fosgate amplifiers are not recom- mended for impedance loads below 2Ω stereo and 4Ω bridged

(mono) loads.

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Contents Installation a n d O p e r a t i o n Channel w/crossoversPractice Safe Sound TA B L E O F CO N T E N T S T T I N G S T a R T E DT R O D U C T I O N Accessory PackTechnical Design Features Mosfet Devices DSM Discrete Surface Mount Technology High Level Inputs 3X DE S I G N FE AT U R E S Signal Input Switches Power/Speaker Barrier StripLED Power Indicator Dual Extruded HeatsinksS TA L L AT I O N CO N S I D E R AT I O N S Mounting Location Trunk MountingBattery and Charging WI R I N G T H E SY S T E MCut Using Passive Crossovers Table of Crossover Component Values OhmsUS I N G T H E Xcard Customizing the XcardResistor Chart Butterworth Alignment Q =Xcard Access Configuration #3 Using the Signal Switching NetworkConfiguration #2 Front inputsFront inputs = Front, Rear Subwoofer outputs Configuration #5Configuration #6 Configuration #1 Front inputs Subwoofer L Mono inputsConfiguration #2 Front inputs Factory Configuration #4 Mono Sub Input Front inputs Subwoofer L Mono inputsConfiguration #5 Front inputs Watts Total Power 3X Installation High Level Input Single Ended TypeHigh Level Input B.T.L. Type Factory Radio 100.7Power Connections Channel OperationChannel Mono Operation Sub Gain Control operates independentlySystem Diagrams Step #1Step #2 Step #3 Step #4 Front XCardSymptom Diagnosis Remedy TR O U B L E S H O O T I N GSpeaker Output Engine noise with Music About the Dynamic Power MeasurementsDY N a M I C PO W E R ME a S U R E M E N T S Listening to Loudspeakers Not ResistorsWhat is an Amplifier? Information Cubed3X Specifications Front/Rear Sub ChannelsATC Length of Warranty Limited WA R R a N T Y in F O R M AT I O NPage Introducción Utilizacion DEL Circuito DE Conmutacion DE SeñalConfiguración n6 Configuración n3Configuración n5 PosterioresUtilisation DU Réseau DE Commutation DU Signal Somme avant & arrière ArrièreBenutzen DES Signal Netzwerkes EinleitungBeispiel #6 Beispiel #3Beispiel #5 Vordere Eingänge = Vordere & HintereImpiegare LA Rete DI Selezione Degli Ingressi Configurazione #2Introduzione Ingressi anteriore ConfigurazioneConfigurazione #4 Ingresso sub mono Posteriore sommatiMade in the USA