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Internal Crossover Configurations
The crossover section of the WCC-1600.2 amplifier is continuously variable and extremely
flexible. There are different crossover configurations possible allowing high-pass, low-pass,
and band-pass configurations. The high-pass crossover incorporates the INTELLi Q feature.
This circuit is designed to optimize the performance of WCC subwoofers in all types of
enclosures.
When using WCC loudspeakers, minor deviations from the recommended frequency ranges
can provide superior results depending on your speaker locations and your vehicle acoustics.
Setting crossover frequencies higher than recommended will not cause damage and may
provide superior sonic results depending on your system's performance goals. Refer to your
loudspeaker owner's manual for assistance in choosing the proper crossover frequencies for
your system.
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 (FULL position), the low-pass crossover is bypassed. When the
switch is in the middle (12 position), the low-pass crossover is active at 12dB/octave. When
the switch is in the right (24 position), the low-pass crossover is active at 24dB/octave. The
low-pass crossover is continuously variable from 20Hz to 3kHz.
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. The high-pass crossover
is continuously variable from 10Hz to 3kHz.
High-Pass Woofers
The high-pass crossover is continuously variable from 20Hz to 3kHz. The high-pass crossover
is now optimized for use as a subsonic filter for subwoofers. Additionally, boost can be
added for improved bass output while still protecting the woofer from excessive excursion.
Fine Tuning the Crossover Frequency
The crossover section is marked at four frequency points for ease of system adjustment.
These points are 20Hz, 45Hz, 250Hz, and 3kHz. 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.
©2004 Directed Electronics, Inc.
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