Help with sound cancellation


New member
Username: Jarod027

Post Number: 1
Registered: May-10
Hey, so I have just finished making my ported box for two 12" kicker l5. 4.4c/f box, I have it ported out the back into the cabin, with the back seat down. But I have noticed that the bass hits much harder with the trunk open rather than down, and was told that was because of cancellation issues.

Is there anyway to correct this? Please help, i want to get the most I can out of my setup

Platinum Member
Username: Rovin

1 15 = 152.5 DBs ...Trinidad & T...

Post Number: 16312
Registered: Jul-05
if ur trunk is rattling alot which might be affecting how the music sounds then u will need to sound deaden it with some expanding foam & some matting like second skin or dynamat ...

Platinum Member
Username: Glasswolf

Post Number: 13613
Registered: Dec-03
I'm not sure I understand how you have the box set up. Any pics?

Silver Member
Username: Jbpitt

Pittsburgh, Pa. Usa

Post Number: 401
Registered: Jul-09
Yea,id like to see pics too. Have you tried facing your box the opposite way? Port facing the trunk?

Gold Member
Username: Hdubb

Team Revolution

Post Number: 4318
Registered: Nov-04
open your trunk lol.

Silver Member
Username: Skdooley

Roanoke, VA Usa

Post Number: 728
Registered: Oct-09
How much room is the box taking up in your trunk? If the box is really big and after closing the trunk, there isn't much room for air to move, it may be constraining the air movement. Almost like the subs being in a sealed enclosure vs. ported. Pics would definitely help though.
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