Using Passive Crossovers | Rockford Fosgate 5.3x guide

USING PASSIVE CROSSOVERS

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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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Rockford Fosgate 5.3x manual Using Passive Crossovers

Contents

Installation a n d O p e r a t i o n Channel w/crossovers Practice 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 D T 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 Heatsinks S TA L L AT I O N CO N S I D E R AT I O N S Mounting Location Trunk Mounting Battery and Charging WI R I N G T H E SY S T E M Cut Using Passive Crossovers Table of Crossover Component Values Ohms US I N G T H E Xcard Customizing the Xcard Resistor Chart Butterworth Alignment Q = Xcard Access Configuration #3 Using the Signal Switching NetworkConfiguration #2 Front inputs Front inputs = Front, Rear Subwoofer outputs Configuration #5Configuration #6 Configuration #1 Front inputs Subwoofer L Mono inputs Configuration #2 Front inputs Factory Configuration #4 Mono Sub Input Front inputs Subwoofer L Mono inputs Configuration #5 Front inputs Watts Total Power 3X Installation High Level Input Single Ended Type High Level Input B.T.L. Type Factory Radio 100.7 Power Connections Channel Operation Channel Mono Operation Sub Gain Control operates independently System Diagrams Step #1 Step #2 Step #3 Step #4 Front XCard Symptom Diagnosis Remedy TR O U B L E S H O O T I N G Speaker 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 Resistors What is an Amplifier? Information Cubed 3X Specifications Front/Rear Sub Channels ATC 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 Señal Configuración n6 Configuración n3Configuración n5 Posteriores Utilisation DU Réseau DE Commutation DU Signal Somme avant & arrière Arrière Benutzen DES Signal Netzwerkes Einleitung Beispiel #6 Beispiel #3Beispiel #5 Vordere Eingänge = Vordere & Hintere Impiegare LA Rete DI Selezione Degli Ingressi Configurazione #2Introduzione Ingressi anteriore ConfigurazioneConfigurazione #4 Ingresso sub mono Posteriore sommati Made in the USA