AE AV's work well in low tuned boxes and are cheaper new than most TC sounds drivers new. They also have lower inductance. There is also the Shiva/Tempest X and on the real cheap check out Peerless's woofers most of them use shorting rings too.Yup, I wanted one of those. I'm still looking for an affordable low inductance woofer that likes low tuned boxes.
Your woofers have a shorter coil and no copper on the pole piece. But your woofers have a aluminum shortening ring in the motor and the qca's.What's the difference between those and the subs you sold me?