Directed Electronics HCCA-D1200 Low-Pass Crossover, High-Pass Crossover, Adjusting INTELLi Q

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WARNING! DO NOT set crossover frequencies lower than the speakers recommended operating range. This can cause driver failure that is not covered by the man- ufacturer's warranty.

Low-Pass Crossover

When the switch is to the left (OFF position), the low-pass crossover is bypassed. When the switch is in the middle (12 position), the low-pass crossover is active with a 2nd order (12dB per octave) slope. When the switch is to the right (24 position), the low-pass crossover is active with a 4th order (24dB per octave) slope. The low-pass crossover is continuously vari- able from 30Hz to 250Hz.

High-Pass Crossover

When the switch is to the left (OFF position), the high-pass crossover is bypassed. When the switch is to the right (ON position), the high-pass crossover is active with a 2nd order (12dB per octave) slope. The high-pass crossover is continuously variable from 20Hz to 150Hz and is optimized for use as a subsonic filter. Additionally, boost can be added at the high-pass crossover frequency for improved bass output while still protecting the woofer from exces- sive excursion. The INTELLi Q adjustment allows up to 10 dB of boost at the selected crossover frequency.

WARNING! Exercise caution when setting INTELLi Q. Maximum boost can potentially cause woofer damage due to over-excursion.

Fine Tuning the Crossovers

The low-pass and high-pass crossover sections are each marked at four frequency points for ease of system adjustment. The low-pass crossover section is marked at 30Hz, 50Hz, 150Hz, and 250Hz. The high-pass crossover section is marked at 20Hz, 33Hz, 90Hz and 150Hz. Specific crossover points can be chosen based on the recommended operational bandwidth of your speakers.

Adjusting INTELLi Q

Incorporated in the high-pass crossover, INTELLi Q maximizes the performance of a sub- woofer. The high-pass subsonic filter removes unwanted bass output from the woofer, increasing the output of a subwoofer by as much as 3 dB due to the increased mechanical power handling. Depending on the enclosure, using INTELLi Q can increase the low fre- quency response by an additional 10dB! The type of enclosure used and the woofer's excur- sion capability determine acceptable boost levels. Listed below are recommended boost lev- els for different enclosure designs.

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Contents Warranty Contents Introduction Important NoteWhat’s in the Box Practice Safe Sound Record Your Serial Number and DateEND Panel Layouts HCCA-D2400 HCCA-D1200 CEA SpecificationsAmplifier Section HCCA-D1200 HCCA-D2400 HCCA-D5000 SpecificationsAmplifier Settings Adjusting INTELLi Q Fine Tuning the CrossoversLow-Pass Crossover High-Pass CrossoverEnclosure Type Boost Levels Infinite Baffle Example High-Pass Set at 30HzSealed Example High-Pass Set at 20Hz Sealed Example High-Pass Set at 30HzVented Example High-Pass Set at 30Hz Power Connections for the HCCA-D1200, and HCCA-D2400 Amplifier WiringPower Connections for the HCCA-D5000 Remote Gain OperationBridging strapping Speaker ConnectionsChoosing Mounting Locations Amplifier InstallationPassenger Compartment Trunk CompartmentTools of the Trade General Precautions and Installation TipsStep By Step Installation SET UP and Troubleshooting Testing the SystemAdjusting the Sound of the System Directed Electronics, all rights reserved Symptom Probable Cause Action To Take Troubleshooting TipsInternal Crossover Configuration APPENDIX-PROGRAMMABLE Features Directed Electronics, all rights reserved Directed Electronics, all rights reserved Directed Electronics, all rights reserved