ok i put in an inline convertor gettin signal fromt he rear speakers and now the sub is actin so weak....while i was installin i left keys in and when i was tightenin the power wire ont he amp sparks flew....amp turns on and everyghting and there is sound coming out of the subs but its ohnt 300watts rms...when i take off subs it sounds the same as havin them on...did i blow something a fuse on the amp or anyting...the amp is still workin sound comin but very low volume....can air leakin from a box affect it that much too??? i think my box maybe leakin a bit air

 

uh u connected it while everytihng was on?????????????/

 

What kind of amp and sub do you have??

 

alpine mrd-m300....and type r 12in