Not to sure were to put this but has any one built the rear deck out of wood for better sound and if so explain and pics, thanks

 

buy speaker cups, they are like 6 bucks on ebay.... they seal the sound in rather than having the speakers use the trunk as a box, also try adjusting your eq settings, and possibly amping your speakers, if you want a speaker amp, i have one i would sell for a good price, it is an alpine 5 channel, about a year old, i had it running my mids and highs, very clear sound.. pm me if you are interested

 

there is no point in building for beter sound just use itals advice only thing i would do is usse wood, fiberglas if adding more speakers