Contour Enthusiasts Group Archives Forums Modifications Audio 148.7 Decibels at DB Drag ... on the quest for 150.0

Question is ... where can I go to get a SPL indicator, ie: either an actual db meter mic thingie ... or at least an indication of what mods help and what mods hurt my performance? Just purchased the Bass Mechanics CD. Songs 6-9 go from 70 Hertz down to 40 Hz and are 10 seconds long each for a total of 30 seconds. I think I will use that CD to test out my optimum level of performance. Yes, the backseats do come out, however the box fills up haf way to the top of the trunk, so there is not much room at all in there. Anybody have any ideas on what type of amps I may want to ugrade to if I get rid of my current 2 Rockford Power 800@2's? I hear all this talk about the class D sub amps, but wouldn't know what to purchase. Here is a pic of what the install looks like from the inside without the amp rack, which I unscrew everytime I go to a competition. Forget that, I can't find the pic. damn it! Keep the replies coming guys, I can use all the opinions I can. Thx!