Question about sub enclosure ports

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=15348
Printed Date: August 21, 2025 at 3:10 PM

Topic: Question about sub enclosure ports

Posted By: tdsteele
Subject: Question about sub enclosure ports
Date Posted: June 23, 2003 at 8:12 PM

Hey guys, got a question on a port design I hadn't seen discussed on here. I'm used to seeing the normal "pipe" ports and seeing alot of "slot" ports nowadays but do any of you guys ever do an "accordian style" port?? Just curious because that is the kind of port design they used on the box for my Diamond's and I had never heard of or seen anything like that before. It does a great job regardless, just wondering why I hadn't seen it mentioned before.

Replies:

Posted By: wvsquirrel
Date Posted: June 24, 2003 at 12:29 AM

Are you referring to a Transmission Line System like this one, or does the port actually look like the ribs of an accordian?

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Posted By: tdsteele
Date Posted: June 24, 2003 at 11:24 AM

That looks alot similar yes, basically i see a vertical slot on the same side that the subs are mounted to, it runs to the back of the box, then across the back twice and on the 3rd run there is just a piece about 3 inches wide. The place that did it called it an "accordian" style. Was just curious as to the advantages of this style port since it is definately more complicated then the standard piece of pipe or slot ports.

Posted By: tdsteele
Date Posted: June 25, 2003 at 11:48 AM

Any other thoughts on this design?? Kinda reminds me of some of the Bose home speaker systems.

Posted By: ViperFreak_01
Date Posted: June 25, 2003 at 4:32 PM

Although I haven't seen one personally, but it sounds an aweful lot like a wave-guide of sorts...almost turning the box into a horn rather than a ported enclosure...how are the subs mounted?

Posted By: tdsteele
Date Posted: June 25, 2003 at 8:03 PM

Subs are mounted facing just like normal, side by side(each has its own enclosure). By looking at the outside of the box you would never really notice its not a normal box, with maybe the exception of the slot openings for the ports being roughly 2 inches wide and the height of the box, roughly a foot. Here, i'll put a pic on here so you can see the what the outside looks like. posted_image

Posted By: tdsteele
Date Posted: June 25, 2003 at 8:09 PM

Posted By: tdsteele
Date Posted: June 25, 2003 at 8:45 PM

Yeah it worked posted_image

, sorry bout the small blurry pic but had to use a different format and it didnt like it but you get the point, thanks guys.

Posted By: ViperFreak_01
Date Posted: June 26, 2003 at 7:24 AM

That's a new one to me (accordian ports)...Not at all like I was thinking...I guess it's never too late to teach an old dog new tricks eh?

Posted By: tdsteele
Date Posted: June 26, 2003 at 3:32 PM

Any installers have any comments on this one?? Anyone else out there ever have a enclosure set up like this??