Just finished my first pair of subs using the AV15-X elements. Driving them is a Crown XTi-1000 which is fed by a DEQX active crossover/room correction unit. I can only say I’m very happy with the result. The drivers have superb build quality and the specifications were precisely right for my need (medium power bass in a small room at 5 * 4 meters but with plenty of headroom with smooth in-room extension down to 18-19 Hz).
I’ve used 21 millimeter MDF with double layer in the front. The cabinets are tuned to 21 Hz using two 10 centimeter tubes at 62 centimeter length. I’ll post some photos in a following message.
Cheers to AE Speakers!