Starting out i was floored by the modded Vifa high. It's a beautiful tweeter very sharp and clean. The Arbiter mid units sounded awesome but still needed a little work. They seemed to generate some nasty standing waves around the 700 Hz and 400 Hz range, which was prolly caused by the shape and size of the door pods (because they weren't designed for those speakers but work great for the XXX mids). After doing some EQing, because of the pod -400Hz -700Hz add a little 2.5 kHz, to fix some of the problems they showed to be very clean very clear and very responcive.