I just hooked up my type r 12 and a crunch 500 watt amp and i sent 250 watts to my sub and it doesnt hit like i thought the 12 would I have another twelve to add to it when it comes in but it just doesnt hit. Is it the amp or what I used 8gauge wire and 18 gauge speaker wire with a 1cubic foot box but **** it is in in a firebird to help me with any explanation or even a ? I can answer to help you help me.