why
 

Hi i had two mtx subs hooked up to my amp and they werent that loud, now I have the only one newer one and its really loud. why?

maybe the 2 were hooked up wrong? different style of box? maybe its witchcraft :|

no doubt, i was in a accident with them before, but i dont think that affected them at all, maybes its just the amp. This one sub bumps 5x higher

yea if they are wired up in the box one way and you mix the wires up going to the amp that will cause them to not bump very hard....try re-wiring them and see what happens.

ported to sealed?

two dvc 4 ohm subs wired back @ 4 ohm from 1krms amp @ 1 ohm.....?
meaning u get 250 wrms? new sub dual 4's wire down to 2 ohm = double the power type situation?

info here is kinda amazing tho.

i had a car before , it drove then stoped running.... why? :dunno:

Hummm with the little info provided I would say this is right on the money as well. If the OP would post up some model #s and specs it would be easier to figure out. :dunno:

you bought a new sub thats like way totally better.

I dunno guys, I still think witchcraft is involved! Just like a rotary engine!

There is certainly somthing different at work under those hoods........:sly: