Quote Originally Posted by kurt02 View Post
well just an advice bro.. pabutasan mo ung likod(katabi ng Back speaker ussually)mo at lgyan mo 2 exhaust pra makalabas ung bayo at gmapang bayo nia... ksi more na nkkulob ung base d sia llabas and pagtgal tgal me magrrattle na sa trunk mo...

i have the same experience din but in my case mejo bitin ako sa bayo kaya ng gnawa ko un mas malakas at gmgpang and the same time nwala ung rattle nia... and one thing ipa-deaden mo n rin trunk mo pra mas mganda ung bayo nia....
+1 po..
www.crutchfield.com

Q: If I put my subwoofer box in the trunk, will I be able to hear the bass?

A: Absolutely. The only situation that might prevent you from hearing bass from a trunk-mounted box would be if your trunk is sealed and soundproofed. Usually, bass travels easily through the materials separating the trunk from the passenger compartment. If you think you're missing out on bass because your seatback and rear deck material are blocking the sound waves, you can alleviate the problem by punching a few small holes in the rear deck and covering it with an acoustically transparent material.

more info...
http://www.installer.com/tech/aiming.html
http://www.installer.com/tech/aiming2.html