The Critical Q Sub-Woofer
Construction Pics
These photos show construction
with earlier Sub Plate Amp.
Other that Cut-Out dimensions,
construction is the same.
Earlier Sub Plate Amplifiers
are no longer available. But PartsExpress makes what looks like a suitable
amplifier, part number
300-804. According to the PDF file, the stock unit without any changes
will give you good all round performance being -1.5dB @ 20 Hertz. But if
you limit the subwoofer for only audiophile use, change R35 from 24K to
15K and R36 from 150K to 470K.
The box cut-out for the
amplifier now need to be 216mm by 216mm.
