Originally Posted by HushCarAudio

The JL 13TW5v2 is 2.625" mounting depth and doesn't have a vent hole in the back of the woofer meaning that you could place it flat on the box if you wanted to not that I'd recommend it touching. It does require .80 cubic feet of ai r though.

Originally Posted by Loucifer

Not sure what I was trying to say with my gains, definitely not all the way up, they're actually all the way down lol. I think you have the parallel and series reversed as it should show 2 ohm when in parallel. I grabbed signal from behind radio directly. Still sounds a little muddy tho for some reason.

Originally Posted by Loucifer

I'd hate to take away anymore from the volume of the box but it's worth a shot if it may help. I figured the exterior coating would help the box from flexing, but you may be right as the coating could itself flex even though it's sprayed on.

Originally Posted by nineball

you don't have to use solid pieces of wood, anything similar to this would work.

Originally Posted by Loucifer

I'm not that good with the router! I just cut some pieces about 4-5 inches long and same depth as the internal of the box and slid them thru the sub hole and put some liquid nails on the edges and nailed them in. Seems to have helped the issue, but I may try some polyfill.