- Enclosure Design -
When it comes to getting the most out of small drivers, using
a vented alignment is generally the best bet if enclosure
size is not an issue. This is especially true in a home theater
environment where low frequency signals can be eliminated
in the digital domain. By filtering the signal from below the
tuning frequency of a ported design, we can get the best of
both worlds; i.e. greater bass extension without unloading at
low frequencies.
Based on the driver parameters, the required cabinet volume
for venting six W3-926S drivers is about .5 cu. ft. For my
design, this translated into a 4" tall, 24" wide, and 14" deep
cabinet constructed of 1/2" MDF. While 24" wide is about the
minimum to fi t the drivers on the front baffl e, the dimensions
can certainly be adjusted depending on the size of the
television. If I had a large TV, I would probably consider
making the front baffl e wider and putting the ports on the
front Instead of the sides. This design calls for four 1-3/4" x
4" ports for a tuning frequency of roughly 100 Hz. While this
size and number of ports seems like overkill for such small
drivers, the ports do start to move substantial amounts of air
at high power.
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