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Porting into rear deck

Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=54941
Printed Date: April 25, 2024 at 7:15 PM


Topic: Porting into rear deck

Posted By: Walkercustoms
Subject: Porting into rear deck
Date Posted: May 01, 2005 at 9:26 PM

i would like to know if anybody can help me.  How does porting into the read deck focus the pressure to the cab of the car.  Is a sub omnidirectional?  If so, if i ported the box with the port in the rear of the box away from everything shouldn't it produce the same amount of pressure in the cab?

Thanks




Replies:

Posted By: geepherder
Date Posted: May 01, 2005 at 9:49 PM
Certain vehicles have trunks that are well sealed from the interior cabins, such as most BMW's, in effect deadening them.  That's why people sometimes vent into the cabin, but other than that, there's usually no need to do so.

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My ex once told me I have a perfect face for radio.




Posted By: stevdart
Date Posted: May 01, 2005 at 10:06 PM

see topic: sub location



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Build the box so that it performs well in the worst case scenario and, in return, it will reward you at all times.




Posted By: MAXST
Date Posted: May 01, 2005 at 10:29 PM
I just took the rear 6x9's out of my accord and bass seems to be much much better.

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I need quality equipment, feel free to donate.




Posted By: pimpincavy
Date Posted: May 02, 2005 at 7:26 PM
I took the sounddeadning out from behind the seat in my vic and cut a port behind the rear armrest. The bass is noticably louder with the armrest down.

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Posted By: joebobcletusjr
Date Posted: May 03, 2005 at 2:11 PM
I had to port into my rear deck as well because there was almost no airflow comming through the deck as it was, so I did what Maxst did (well only as far as removing my 6x9s) relocated the 6x9s, and stuck my areoports upagainst the grilles of the stock 6x9s, I figured the more stock the back looked from the outside the less likely I will be to get my stuff jacked.  There was definetely a huge improvement.

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eh? what did you just say?




Posted By: Walkercustoms
Date Posted: May 03, 2005 at 4:02 PM
Well the reason I ask is because the guy told me that nobody sits in the back seats and instead of me cutting his rear deck or seats I just told me to flip the seats down since its a 60/40 split and that will be enough in the cabin I would hope for him and if not then you may want to go with stronger speakers. 




Posted By: pimpincavy
Date Posted: May 03, 2005 at 7:30 PM
If your car has the fold down backseat, by all means fold them down, it helps the bass out quite a bit. My cars seats dont fall down so I have to get by with just a port behind the armrest.

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Posted By: MAXST
Date Posted: May 03, 2005 at 8:57 PM
I took the back speakers out since they suck and if the bass goes low they rattle. Also i have the stock grills over the rear deck. You couldnt tell i have taken them out without looking close.



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I need quality equipment, feel free to donate.




Posted By: 1stimer
Date Posted: May 04, 2005 at 4:23 AM
I have just purchased a very modest system for my older mercedes (1984 300D), and am curious about getting bass into the cabin. I talked to one installer who said the "best" way to do it would be to build a bandpass enclosure and funnel the bass into the cabin through a small opening from a removeable first-aid kit on the rear shelf. Anyone have any experience with this model of car and getting bass into the cabin? The rear deck is pretty solid metal, even under the rear 6x9's is metal....plus the fuel tank blocks 2/3's of the trunk on the passenger side. Thanks and btw excellent forum you guys have going here....been lurking for a couple of nights...best car forum I have been to yet.....researched my system for almost a month....wish I'd found this place sooner.




Posted By: geepherder
Date Posted: May 04, 2005 at 8:11 AM
I'm doing an older mercedes for a customer as well.  I'd avoid the bandpass as it probably won't sound any good- too boomy over a small bandwidth.  Removing the first aid kit is what I would suggest as well.  I'm going to build a grill to go in it's place when he comes back this weekend.

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My ex once told me I have a perfect face for radio.




Posted By: 1stimer
Date Posted: May 04, 2005 at 1:05 PM
Can you please let me know if sufficient bass is getting into the cabin from the removal of the first aid tray?
Thanks...Randy




Posted By: 1stimer
Date Posted: May 04, 2005 at 1:06 PM
What model mercedes?? What did you do for the fronts? door mount the or pods? Can you please let me know if sufficient bass is getting into the cabin from the removal of the first aid tray?
Thanks...Randy




Posted By: 1stimer
Date Posted: May 05, 2005 at 3:14 PM
I just wanted to mention that besides the installer that reccomended a bandpass enclosure ported into the rear cabin, two members of the image dynamics forum have also suggested this is the reccomended enclosure and procedure to get bass into the cabin of my vehicle with an idq-10. They said that it is the only circumstance in which a bandpass enclosure will sound better than the alternatives. I am still going to try and do a sealed box with the first-aid tray removed, but I think porting into the cabin may be the best alternative in a few select cases.




Posted By: geepherder
Date Posted: May 05, 2005 at 8:14 PM
I think it's coming in either tommorrow or Saturday.  I'll be sure to let you know how it turns out.

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My ex once told me I have a perfect face for radio.





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