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Sound Barrier from my trunk to my the front

Old 03-15-2012, 11:14 AM
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Question Sound Barrier from my trunk to the front/cab

I just got a 2009 Lexus GS 350 W/ ML Sound. These newer luxury cars get to be so quiet anymore as far as the road noise goes. This is a good thing until i am trying to get sound to pass through my trunk, then it kinda fights me. I have 2 10" subs that i have had in my previous cars and they sounded great. Now that i put them in, the quality is good, they just dont shake the car quite as well as they used to. Id like to blame this on the trunk being sealed up very well from road noise. My box has a port that is long & skinny and is right in the middle of the two 10 inch subs i have. I figure i can turn the box around so it is facing the front of the car and point that port right at my pass through which im hoping will get some better sound into the vehicle. I plan to try this later tonight but i see this as more of a work around, i would rather do things the right way.

So basically my question is: What have you guys done, if any, to get sound to pass from the trunk to the front of the car better? Obviously, to all you smart @$$3$ out there , higher wattage/more expensive equipment will fix this but im hoping for other suggestions/remedies because i feel my current system has been satisfactory.. At least until just now. I was thinking of making custom ports that go up and come out right by/next to the factory 10" sub which is in the middle of the car right behind the back seat. Also thought about removing the factory sub (I already unhooked it for fear of not hearing if it is distorting over my 2 10"s) and letting the custom ports stop right there.. If i do that, which direction should the subs face? Thoughts/suggestions?

Last edited by franco09; 03-15-2012 at 12:34 PM.
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Old 03-15-2012, 01:35 PM
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Well you are thinking the right way - find a way to pass the sound directly into the cabin rather than playing it into the trunk and hoping it finds a way in.

This is one of those cases that IMO a bandpass box very much excels at.
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Old 03-15-2012, 02:55 PM
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Originally Posted by Dukk View Post
Well you are thinking the right way - find a way to pass the sound directly into the cabin rather than playing it into the trunk and hoping it finds a way in.

This is one of those cases that IMO a bandpass box very much excels at.
Thanks for the confimation! I think i will continue on in that direction then. Now that you say it, a bandpass box would be really cool and a great way to show off the system while still porting the subs into the cabin... My only worry is distorion.. I have had a bandpass box before and if i remember right, you cant hear distortion in those.. id have to be careful. But thanks for that advice, i have a guy that can build virtually any box i need so i think i might need to have a chat with him..
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Old 03-16-2012, 10:59 AM
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The box does act as a filter that may mask the sounds of a driver in distress but you just need to be conservative with your equipment selection and it will be fine.
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Old 03-16-2012, 11:22 PM
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Another simple solution is to remove the factory subwoofer (assuming it's in the rear deck)
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Old 04-12-2012, 09:38 PM
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I once had a bandpass box with the port coming through the rear deck where the speaker used to be. The other side of the box vented into the trunk. It had a nice sound and felt strong. At first I had both ports into the cabin and it just didn't sound right. Had a strange bass buzz at certain frequencies and I hated it. Plus it didn't sound near as loud as a previous setup with the exact same subs and amp.
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