Rockford Fosgate PUNCH360, PUNCH500, PUNCH250, PUNCH800, PUNCH100, PUNCH150 Using Passive Crossovers

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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 (capaci- tors), 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 impedance 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 Punch ampli-

fiers are not recommended for impedance loads below 2Ω stereo and 4Ω bridged (mono) loads.

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Contents Punch Punch 100PUNCH 150 Punch 250PUNCH 360 Punch 500 Punch 12dB/octaveButterworth 100dBA-weightedVolts Mono into a 4Ω LoadPractice Safe Sound T T I N G S T a R T E D TA B L E O F CO N T E N T ST R O D U C T I O N Punch Amplifier Accessory PackBalanced Inputs Punch 2-CHANNEL Amplifier Feature Chart100 150 250 360 500 800 # of Channels Stable Into each channel Stable into bridged/monoDimensions H x W x L 100 150 250 360 500 800 Adjustable Punch BassVariable Punch Bass 0dB ~+18dB @ 45Hz Adjustable Xover 80Hz Phase Warp 00 ~Punch Design FeaturesPage Installation Considerations Engine Compartment Mounting Mounting LocationTrunk Mounting Passenger Compartment MountingBattery and Charging Wiring the SystemAppropriate inline connectors. Use the section Page Using Passive Crossovers Freq Speaker Impedance Hertz Table of Crossover Component ValuesPunch 250 / Punch 360 / Punch InstallationPower Connections Punch 100 / Punch Power ConnectionsRCA Inputs High Level Inputs Power Connections PunchPunch Bass Operation Crossover OperationStereo Operation Punch 250 / Punch 360 / Punch 500 / Punch Stereo Operation Punch 100 / PunchImpedance for mono channel should be 4 Ω Mono OperationMono Operation Punch 250 / Punch 360 / Punch 500 / Punch Punch 100 / PunchRCA Input Stereo/Mono Operation Punch 100 / PunchWay System SY S T E M DI a G R a M SWay System Using single voice coil woofers Using dual voice coil woofers TR O U B L E S H O O T I N G Symptom Diagnosis RemedyUsing high level Engine NoiseInputs Listening to Loudspeakers Not Resistors Dynamic Power MeasurementsAbout the Dynamic Power Measurements MusicWhat is an Amplifier? Example of a Punch 200.2 PowerCubeInformation Cubed Limited WA R R a N T Y in F O R M AT I O N Page Terminal B+ Montaje en el MalateroMontaje en el Compartimento de Pasajeros InstalacionNo llevar a masa ningun cable de altavoz Terminal GNDTerminal REM Crossover en Full RangeInstallation Montage dans le coffreMontage dans lhabitacle Opération stéréo/mono tri mode + Anschluβ Im FahrzeugkofferraumAuf der Beifahrerseite EinbauGND Anschluβ REM AnschluβStereo/Mono Operation Terminale B+ cavo positivo InstallazioneNel Bagagliaio NellabitacoloTerminale REM Consenso di accensione Terminale GND cavo negativoRockford Fosgate Handcrafted in the United States of America