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INSTALLATION MANUAL

AF/4HD ACTIVE FILTER ADJUSTABLE CROSSOVER

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Summary of Contents for AF/4HD

Page 1: ...INSTALLATION MANUAL AF 4HD ACTIVE FILTER ADJUSTABLE CROSSOVER...

Page 2: ...STEMS MAY PRODUCE SOUND PRESSURE LEVELS WELL OVER 130dB USE COMMON SENSE AND PRACTICE SAFE SOUND Make your ckhrdfbqak system complete with installation accessories from ibdbdb db a division of Rockfor...

Page 3: ...ns 1 Fuse Protection 1 Figure 1 Illustration View 2 Frequency Selection 2 Band Selection 4 Figure 2 Illustration View 6 Switching Examples 7 Summing Channel 9 Phase Shift and Cancellation 9 Extra Feat...

Page 4: ...ED MOUNTING AUDIO CIRCUIT IS HYBRID DESIGNED LOW DISTORTION WIDE RANGE OF FREQUENCY MODULES OR FASHION YOUR OWN SMALL LOW COST HIGH LOAD DRIVING CAPACITY CAPABLE OF HANDLING UP TO 10 ROCKFORD FOSGATE...

Page 5: ...to create notch filters oroverlapfrequencies to equalize in or out a desired response High and Low crossoverfrequencies in the AF4 are selected by inserting frequency modules in sockets in the intern...

Page 6: ...istance value you need for the frequency you want from the formula below R 1 OHM s 1 38 10 7 f I f is the frequency that you want FREQUENCY RESISTOR VALUES The following table was tabulated by using t...

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Page 8: ...pass The empty location is where the resistor frequency module R is placed See below Note Outputs one andfourcan be defined as either a high pass or low pass depending on where the capacitor module C...

Page 9: ...EQUENCY MODULE LOCATIONS High Pass Location 7 Low Pass Location Resistor Module Low Crossover Point High Pass Location Capacitor Module Capacitor Module Crossover Point Low Pass Location Crossover Mod...

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Page 12: ...4 of 360 or 90 Cancellation is what happens when one speaker is pushing while the other is pulling Instead of putting out sound into the environment the speakers just swap air back and forth This is...

Page 13: ...se lag leading to cancellation For this reason On any installation try reversing both woofer phases In some cases bass will be much tighter with woofers reversed These considerations also apply to the...

Page 14: ...arate frequencies with the same high and low pass filter functions as passive crossovers but since they are made with integrated circuits they are much smaller and lighter Passive crossovers are usual...

Page 15: ...Most autosound installations introduce a number of acoustical problems that can sometimes be corrected with careful attention to your crossover frequencies The use of l 3 octave RTA can help you deter...

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Page 17: ...on Frequency Response Filter Response Filter Slope Power Required Dimension Weight 750 mV RMS 20 000 Ohms 750 mV RMS 500 Ohms Over 90dB A Weighted Under 01 THD Noise 20 Hz 20 000 Hz 5dB Butterworth 12...

Page 18: ...OR CALL 602 967 3565 FOR THE DEALER NEAREST YOU All products must be returned freight prepaid to an authorized Rockford Fosgate repair center where it will be repaired or replaced at our option and re...

Page 19: ...Rockford Fosgate A Division of Rockford Corporation 613 South Rockford Drive Tempe Arizona 85281 U S A 602 967 3565...

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