porting enclosure help

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=20006
Printed Date: August 26, 2025 at 11:30 PM

Topic: porting enclosure help

Posted By: intensem1rider
Subject: porting enclosure help
Date Posted: October 12, 2003 at 6:32 PM

ok, i have 3 alpine type-e 12" subs, in 3 separate 1.25 cube sealed enclosures.

Problem is that thay play the high bass notes to much and the lows the barely happen, i want to port my box to get a lower sound but still stay with sound quality.

I only have enough room to fit a 2" wide port paralell to the sub. Can i put the ports 90 degrees to the sub? or perhaps on the back of the box behind the subs? if so then i can get any ports.

But the main prob is chooseing a frequency to tune to.

Thanks
Jason

Replies:

Posted By: bberman1
Date Posted: October 13, 2003 at 12:39 PM

How do you have your X-overs set?

Posted By: intensem1rider
Date Posted: October 13, 2003 at 1:35 PM

its not a matter or x-overs, it box.

But anyways the x-over is as 71hz, and the sub sonic is at 15hz, and the boost is set for 40hz.

My amp is the apline mrd-m500, i am an installer at a certified alpine dealer so i know the in's and outs of alpine, just im not a pro at porting, i do know i need to port.

Posted By: intensem1rider
Date Posted: October 14, 2003 at 12:29 AM

anyone?

Posted By: intensem1rider
Date Posted: October 14, 2003 at 12:31 AM