is there any difference in sound between building a box out of wood and one out of fibreglass
also how are guys putting 3 12s in the back of a camaro i had 2 12 inch pheonix golds in the back of mine and it was in about the biggest box i could fit back there and it sounded just right to me i thought pheonix gold needed very little space but i guess i was wrong

 

None, if both boxes are built correctly. Was your box ported? If so, that's probably why. We can fit 3 12"s back there if the box is sealed. Actually..... there are a few woofers on the market we could probably do 3 12"s ported..... Adire Audio Brahma for one.