1987 - 2017: Thirtieth Anniversary!
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PRO 012 Woofer
The PRO 012 woofer is used in the model QT-1+ and QT-2+. Some of the earliest ones I built used other woofers, but this is the replacement you want for them, also.
It is not necessary to return the old part when replacing this part.
7 Kelsey Road, Lee, New Hampshire 03861