Best viewed in "landscape" mode.
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