[litspliff420]

Classes:

A/B- better for High/Midrange frequencies. Least effecient amps, but with cleaner power.

D- best for Low frequencies (sub amp). In some cases, not as clear as A/B but not noticeable in low freqencies IE. sub amp.\

X/T- class coming up in the market supposedly more effecient than the D amps. favor low freqency range like D's

 

[litspliff420]

i have heard the Macdaddy's and they are pretty nice subs. A little overpriced, but good. One of my good friends has two of them in his truck ported and tuned to 40 Hz. for SPL and is currently pullin 153's from the dash. Not too bad.

As for SQ, his is alright, but it could be better. His is mainly set up for SPL purposes, so im not sure on SQ.