Box for MA Audio MA121XQ 12's
Printed From: the12volt.comForum Name: Fiberglass, Fabrication, and Interiors
Forum Discription: Fiberglass Kick Panels, Subwoofer Enclosures, Plexiglas, Fabrics, Materials, Finishes, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=55518
Printed Date: May 09, 2025 at 9:47 PM
Topic: Box for MA Audio MA121XQ 12's
Posted By: One_Dieu
Subject: Box for MA Audio MA121XQ 12's
Date Posted: May 11, 2005 at 1:42 AM
Hey people I need all the help that I can get on this project. I had a post a while ago but I could not find it so I wrote a new one. I’m building a box for one of my home boys and I’m stuck on what to do next. Here are the spec’s of the subs that I will be using.
MA121XQ
MA Audio MA121XQ 12" High Performance Dual 4 Ohm
Features:
350 Watts RMS
700 Watts Max
Dual 4-ohm Voice Coils
150 oz. Single Magnet
Mounting Depth: "
Mounting Diameter: "
Optimum Vented Box: 2 cu/ft
Round Port Diameter: (2) 4"
Square Port Area: 25 sq/in
Port Length: 15.5"
Optimum Sealed Box:
0.75 - 1.25 cu/ft
I want to make it a ported box with no divider between the subs. The box will be mostly MDF with a FG front. The box is exactly 4 cubic feet before the port that I made. I didn’t want to have a port on each side, so I made one port. I might have read the spec’s wrong, but I think that each sub calls for a port that is 25 sq/in and 15.5” in long. So what I did was make a port that is 50 sq/in and 15.5in long. I know that making a ported box that sounds right is hit or miss. I really don’t want to put in a lot of time on the fiberglass part of the box and have it sound like poop in the end. Here is a picture of the box with the port placed in it. I’m trying to get this box done for my boys birthday next week. I really need some help with the quickness. Will this work or should I scrap this and start over?
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Respect the Blood Line
Replies:
Posted By: oonikfraleyoo
Date Posted: May 11, 2005 at 8:01 AM
Posted By: One_Dieu
Date Posted: May 14, 2005 at 2:27 PM