Enclosure for Two Eclipse SW9122 Subs
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=57549
Printed Date: May 21, 2025 at 1:27 PM
Topic: Enclosure for Two Eclipse SW9122 Subs
Posted By: kd7nfr
Subject: Enclosure for Two Eclipse SW9122 Subs
Date Posted: June 12, 2005 at 3:08 PM
I have two Eclipse SW9122 subs, and I'm looking at getting some ported/vented boxes made. Can anyone point me to a tutorial? I'm sure you guys are tired of answering stupid questions... LOL. I need to learn how to figure sizes for cubic feet and port volume so I can tune it. Thanks.
Replies:
Posted By: DYohn
Date Posted: June 12, 2005 at 3:26 PM
www.diysubwoofers.org is one of the best places to start. Relax and read through as much as you can. ------------- Support the12volt.com
Posted By: kd7nfr
Date Posted: June 12, 2005 at 3:36 PM
Thank you much.
Posted By: kd7nfr
Date Posted: June 12, 2005 at 3:56 PM
Hey, what does ^ mean?
Ex: Vb = 20*Qts^3.3*Vas
Posted By: kd7nfr
Date Posted: June 12, 2005 at 4:35 PM
Nevermind, fingered that part out, but I think I'm just gnna have sum1 else build me 1.
Posted By: stevdart
Date Posted: June 12, 2005 at 10:35 PM
kd, i asked that same question too. Don't give up. Successfully building your first sub enclosure is one of the most rewarding things you'll ever do.
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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: SoundAudio
Date Posted: June 13, 2005 at 12:45 PM
IF you want to qatempt building your own enclosure there are plenty of tutorials for actual contruction. Designing the enclosure yourself is a great learning experience and you can use a free downloadable program, WinISD, to help tune by calculating port length. It isn't necessarily perfect like the exepnsive programs out there. But I have a lot of success using it. Good Luck.
Posted By: DYohn
Date Posted: June 13, 2005 at 1:04 PM
kd7nfr wrote:
Nevermind, fingered that part out, but I think I'm just gnna have sum1 else build me 1.
I recomend if you want to learn about enclosure design and construction, you should read and learn as much of the link titled "Theile-Small" on the left side of this site. It will explain most of the terms you are likely to run across. ------------- Support the12volt.com
Posted By: kd7nfr
Date Posted: June 13, 2005 at 3:02 PM
THANK GUYS!!! Heh, this forum is much more helpful than most. I'm over here about ready to cry because I have $500 in Eclipse Ti's I can't even hear yet!
Posted By: kd7nfr
Date Posted: June 13, 2005 at 3:25 PM
That program is confusing as hell. Can anyone point me towards a good tutor for it? Thank.
Posted By: kd7nfr
Date Posted: June 13, 2005 at 4:35 PM
I'm playing with WinISD, and I have a question. What is a good -3db cutoff point? What is the lowest frequency music goes? Also, what is a good top frequency for a sub? I'm trying to get this box PERFECT!
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