Port lengh

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=16006
Printed Date: May 19, 2024 at 4:54 PM

Topic: Port lengh

Posted By: bigmurf127
Subject: Port lengh
Date Posted: July 07, 2003 at 6:54 PM

I'm looking at this sub from Visonik the V1265S4

it asks for 2 four inch ports that are 19 inches long tuned at 33 herz. IS it me or is that really long.

I used a couple of online calcutators and they say 10" ports, confirmed by 3 calculators.

I don't want to build a box that deep, should i believe manufacturer specs or go with the standard equations

Replies:

Posted By: bigmurf127
Date Posted: July 08, 2003 at 11:31 AM

bump

Posted By: red_1
Date Posted: July 08, 2003 at 3:41 PM

I would go with the manufacturer specs because it will give you the best sound

Posted By: tdsteele
Date Posted: July 08, 2003 at 4:11 PM

You can do different things to make it different, for instance, cut your port that length, then when it gets close to hitting the back of the box, cut it off and put a 90 on it. Or depending on the install, leave the excess port hanging out the front of the box. Just has to be the correct length one way or another. Could possible try converting it to a slot port and see what size that would make it.

Posted By: bigmurf127
Date Posted: July 08, 2003 at 9:35 PM

whats the formula to convert from round to a slotted port?

Posted By: bberman1
Date Posted: July 09, 2003 at 9:15 AM

If you convert it to a square port you will still have the same port length. https://www.the12volt.com/installbay/forum_posts.asp?tid=14074&KW=square+port

Print Page | Close Window