I'm considering building a set of voigt pipe/ML-TQWT speakers and eventually an SET tube amp to go with them. I've read lots of posts about TQWT building, although I'm having a hard time finding the key to the cabinet size parameters (e.g. S1, S2, S3, Par, etc., as listed in GM's design for the Dayton Audio PS220-8 driver).
Is this the speaker design: https://www.diyaudio.com/community/...ce-full-range-neo-driver.405098/#post-7498532
jeff
jeff