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Discussion Starter · #1 ·
I've had a regular cab ('02) & a CC ('05) with MANY different setups short of a blowthru. And every setup was louder with windows or doors opened vs sealed. :dontknow:
 

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they dont have the air space and when you open the doors or windows that lets they air that your woofers need in.
 

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my s10 is the same unless i put the wall in with 2 18 treo ssx...

any smaller set up, fi btl, orion hcca, dc lvl 4xl, re xxx they all got atleast 4 db louder on tl with window cracked on each side

everyone always says yea u have a truck thats y your louder.... they just dont get it
 

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Discussion Starter · #5 ·
Yeah, I mean I'm beyond all the showing off with the windows open, etc. I want it nice, clean, & clear with the windows up, lol. Everything will sound great aside from the bass.
 

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this one reason i like my tahoe, because it gets louder windows up
 

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My buddy had 4 Infinity Reference 10s in his Silverado extended cab. It was pretty loud, though not like SPL competition loud. His box theoretically fit under the back seat. With spacers.

Kinda depends how loud you want to be I guess. But yeah, windows down getting louder means you've got too much sub for your airspace.
 

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I have a cut through and the 2 15s are loud but when i open the doors its crazy ass hell.

its always been louder when windows are down for me..............

im not sure why though. its almost as if when the windows are up you have a sealed box and when the windows are open its a ported box .

id like to know the science behind this....
 

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I'm sorry, I don't understand that statement. Can you explain?
As I understand it, it has something to do with the suspension of the subwoofer. Just as a sub needs the correct airspace inside the box, the volume of air outside the box also comes into play. Having your windows down will make the sub see essentially infinite airspace outside it, which depending on the airspace inside the vehicle (and possibly the box design) may make the subwoofer perform better or worse.

This might be an incorrect explanation of how and why it occurs, but it's how I understood it to happen. As far as what parameters determine it I'm not sure, but I'd guess it has to do with the Vas of a speaker. I think this is also one of the things that goes into "cabin gain".

Also, get vehicles with moonroofs. Then you can vent/open the moonroof to control your airspace, and leave the windows up
 

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For the ext Silverado it should be tuned around 54hz no wall and tons of port area and you will start to see your score come up sealed, that's all the info I will give you because some day you just might be competing against me lol.
 

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o yes man a blow thru has the exact issues. when i open both windows it comes alive when i open the doors it gets insane. but **** i cant drive around with the doors open.



I was wondering the same thing. If a blow thru would have the same issues.
 

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Discussion Starter · #19 ·
For the ext Silverado it should be tuned around 54hz no wall and tons of port area and you will start to see your score come up sealed, that's all the info I will give you because some day you just might be competing against me lol.
lol no comps for me, lol. I'm just tryingto get louder inside without bothering everyone outside, hahahaha. Question for you, with tuning that high with cabin frequency, how does it do with the low end? This setup is a daily beater.
 

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samething with whatever setup I have in my truck...I really only drive it during the spring/summer though so I like to roll with my windows down
 
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