I decided that something has to change with the sub. I am going to buy a sub and box and mount them in the trunk. The problem is that I have an UL but the audio guy I spoke to says that removing the oem sub will still create enough of a port for the bass to sound good.

1) Has anyone with a UL put a sub in the trunk? How does it sound?
2) I am thinking about only going with a 10", so which setup do you think will sound best? My last sub was a Kicker Comp VR and it sounded great so I am leaning that way or at least with Kicker.

 

You can do that my friend did it to his 03 it sounds good but it rattles the trunk.

 

Did he dynamat the trunk?

 

Yeah...but he still has to do the roof and behind the lights after that he should be good.

P.S. the antenna on the roof rattles and the taillights

 

when my bass is really turned up playing a song with alot of bass my front license plate shakes along with every other part of the car, the trunk looks like its gonna fly open... the roof literally jumps up and down all over the place...

 

You need to dynamat your car and you should be okay.

 

On the other hand, has anyone replaced the oem 8" sub with an aftermarket one and ran an additional amp to it? How much better does it sound?

 

I guess everyone just uses the stock amp.

 

i am selling my gs400 this weekend and in that i had taken out the stock 10 out of the rear deck and put in a jl12w6 in a smal sealed box with a 500.1 jl amp all running off of the factory nakamichi head unit and all factory speakers... it sounded 9000 times better than stock. i put it back to stock and after i pick up this ls430 hopefully on monday i will be doing the same to the ls. I hope it sounds as good in the ls as it did in the gs.



this car audio shop out this way claims that i can get much more bang for a little extra buck by having them make a custom ported (possibly slot ported) box made for that speaker (jl12w6) and fitting the shape of the back portion of the ls trunk.