The very best I have achieved were Klipschorn bottoms made from 1 1/4" particleboard, coated with 34 LBS of Clear RTV. I loaded them with Gauss 15" using a 2226H cone assembly mated with Gausses' Motor and voice coil. Tricky converting the cones. The TAD Mids were driving some 300 hZ mid horns (Fiberglass and thick) and the electrovoice T-350. I hand wound all my crossover inductors and resistors!. The capacitors were Sidereal. These gave me 105.5 dB (1w1m)and a 3 dB down point at 29hZ. I have currently some very old Magnavox 20 watt alnico 15" that I would love to implement. They give a solid 102dB 1W1M and these are the good ones. I have some 350hZ mid horns, One University tweeter. All I need is mid drivers, and a good pair of tweeters. FS on the Magnavox (a'la CTS) are 38hZ.

I do plan to give these drivers a shot....But I also have a speakerlab Mid driver laying around as well.

Hope to be an active member of this forum.