enclosure for four Ma Audio 15s
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=38363
Printed Date: July 09, 2025 at 7:50 PM
Topic: enclosure for four Ma Audio 15s
Posted By: 1 4u2nvy
Subject: enclosure for four Ma Audio 15s
Date Posted: August 30, 2004 at 8:35 PM
ok this is what i have... I have a 1995 Cutlass Supreme and i have four Ma Audio 15s and i want to put them in a diamond shaped box and but the subs on the four seperate sides of the box and have a single diamond port in the middle and i jusr wanted help on how to dimensions the box and figure port size and stuff. any help///
Replies:
Posted By: jeffchilcott
Date Posted: August 30, 2004 at 9:20 PM
Try going to the Ma audio website. We would need exact model's of your subs to try to draw up a box. you could do four square ports at the center of the box for each chamber I wouldnt reccomend it but it would look good if pulled off right
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
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2007 World Record
2006 USACI Finals 2nd Place
Posted By: auex
Date Posted: August 30, 2004 at 9:26 PM
How many bodies can you fit in the trunk? If less then three you probably don't have the room, especially for ported boxes for 15s.
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Posted By: 1 4u2nvy
Date Posted: September 01, 2004 at 5:34 PM
ok to answer both questions first of all to the last one i am going to put them in a wall in the backseat of my car and just have probably an amp rack in the trunk. and they are model 1550W series Ma Audio 15s. i just really need some help on this because i am not sure of what to do.
Posted By: jeffchilcott
Date Posted: September 01, 2004 at 5:37 PM
well if your planning on a wall i hope you have alot of time patience and big pockets. I will see what I can come up with for each box on them, what kind of amps will you be running them with? where are you from also?
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
Posted By: 1 4u2nvy
Date Posted: September 01, 2004 at 7:47 PM
i am from around the springfield il area. i am planning on using an mtx amp that i have it is the 81000D amp. and i wanted to know how to get the moost power out of it and what yopu suggested on how to run the wires. should i run them together or what?
Posted By: jeffchilcott
Date Posted: September 01, 2004 at 8:42 PM
well from what I am reading the optimum for each sub would be 3.25 cu ft per sub, the vent would be 37 sq. in by 12.5 long.. as far as power goes you would be underpowering a little bit but you could wire 2 subs in parrallel to get an 8 ohm load then wire those sets of 2 in series to get a 4 ohm load, then bridge on the amp for full power. But i cant remember if you can bridge the 81000d. it might just have one output
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
Posted By: Ravendarat
Date Posted: September 01, 2004 at 9:05 PM
are those subs dvc or single, if they are single then I agree with Jeff, If the are dual then I would series each sub woofer and then parallel the sum of them together. The MTX amp has two sets of termianals but is a mono block and bridged internally. So you can just hook up two subs to each set of terminals. BTW, walls arent all that expensive, just generally ugly, thats what I use right now in my S-10. Kinda fun to play with but SQ is absolute sh*t.
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double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer
Posted By: jeffchilcott
Date Posted: September 01, 2004 at 9:14 PM
the subs are only availible in SVC
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
Posted By: Ravendarat
Date Posted: September 01, 2004 at 9:16 PM
fair enough, if thats the case then that amp is a bad match for those subs. I would either get a second one or sell it off and get something that is either 1 ohm stable or get a couple of mono block amps that are 2 ohm stable.
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double-secret reverse-osmosis speaker-cone-induced high-level interference distortion, Its a killer
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