Ports for a 15" MTX 6000 series
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=31711
Printed Date: July 07, 2025 at 11:36 AM
Topic: Ports for a 15" MTX 6000 series
Posted By: Zero10
Subject: Ports for a 15" MTX 6000 series
Date Posted: May 06, 2004 at 2:02 PM
Hi, I just have a couple quick questions.
I'm in the midst of a large fiberglass project, in which I am building boxes for 2 MTX 61544A's (15" dual 4 ohm voice coils, 6000 series), and an amp rack that will fit between the boxes. It's tough to explain, so perhaps I will post some pictures if you guys are interested.
Anyways, I checked out the MTX web site for reccomended port diameters, and box volumes and such, and I am building my boxes to be approx 1.8ft^3, this is a little on the small side, but I really have some size constraints, and these subs are from my old station wagon, where space wasn't an issue. So, according to MTX, I need 1 4" port for each 15 (seperate boxes, so 1 port per box), but that seemed like too little, so I tried my best to fit 2 4" ports into the box, but it will be very very difficult to do.
Now, I'm wondering, will I get a lot of port noise if I use a single 4" port?
I will flare both ends of the port, and properly position them away from the edges inside the box.
From what I understand, the peak excursion of this sub is quite low for a 15, perhaps that will aid me in sneaking by with a single port.
If it's better to have 2 ports, one port will have a single 90* bend in it, but the other will have 1 90* bend, 2 45* bends, and about a 15* bend near the outside end of it. I plan to round out the corners, and do everything I can to promote airflow, but I am still worried if I wouldn't be better off with a single port, with a 60* bend in it.
Replies:
Posted By: stevdart
Date Posted: May 06, 2004 at 11:12 PM
I think you're better off with the single port that MTX recommends. Bend it however it fits.
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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: 74 chev
Date Posted: May 07, 2004 at 11:51 AM
that does sound a little small for a 15 inch sub. i have a l7 10 solo-baric and its in a 1.83 cf box with 2 ports that are 4" by 17.5 long.
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74 chevy truck, 12in lift, 38 inch tires, viper alarm,dual batteries,pioneer premier 760mp deck, jl CSI components,JBL PX 600.2 amp, L7 10 mounted in a 1.83 CF ported enclosure.
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