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bkdent64
11-30-2012, 12:02 AM
hi guys, newbi here looking for box volume advise. I have a mtx thunderform DDXP20 box for a 97 dakota. the subs went out and looking to replace them. my question is how critical is the box volume, the internal volume is 1.8cf for both subs or .9 per sub. I was looking to replace them with rockfords R2D4-10 subs which require .59cf per sub or MB Quarts onx 254 which requires 1cf per sub, since i cant go up in volume for the MB's i was thinking that i could always come down in volume for the rockfords, if i did go down in volume what could i use in the box, i read somewhere that styrofoam blocks could be used, any advise would be greatly appreciated, Thanks

frogcase2002
11-30-2012, 03:39 PM
is it a sealed box

bkdent64
11-30-2012, 07:39 PM
yes it is