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Old 24th January 2010, 12:58 AM   #41
diyAudio Member
Join Date: Nov 2003
Location: Louisiana
There aren't any good drop-in subs. The CENU07 and CENU57 would likely work if you could find them.

I'd suggest using 2n6488s and 6491s as subs (at least temporarily). The pin configuration is different so you'll insert the base and collector legs into the corresponding through-holes (base-base and collector-collector) and hard-wire the emitter to the remaining pad.
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Old 24th January 2010, 01:33 AM   #42
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Join Date: Sep 2006
if i got the cenu07 and 57's would they be the best sub and drop in without reverseing them?? i have thoose on hand right now i bought alot of them awhile back
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Old 24th January 2010, 01:43 AM   #43
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Join Date: Nov 2003
Location: Louisiana
I've never used the CENU07/57 but I believe that they would be a good, reliable sub.

To clarify, the 88/91 wouldn't be reversed here, they would simply be shifted over one position.
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Old 24th March 2011, 10:21 PM   #44
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Join Date: Mar 2011
Interesting read, i have a similar project and am wondering if you ever got this amp running...
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