SonoSub Build Thread

Serendipity

So I am going to build a sub for organ music and the like. Driver will be a 15" Dayton Titanic MKIII, should receive the woofer from PE early next week. Trying to keep this build on a budget, looking to build a 6ft^3 enclosure with some tubing from Home Depot. Amp will be the THX Certified QSC ISA 750, if I can pick up one on the cheap, the local art-house movie theater uses these and they sound great. But the sub will be for music only. Any suggestions?

CoolJazz

Three directions come to mind....

1 - Do a take off on one of the older cylinder Hsu subs. Work very well and are musical. But note they do active eq.

2 - Would require a larger cylinder than what you probably can get at Home Depot, but Rex Baldock (known as a British hi-fi writer) had several designs some years back that were excellent in the low end. You can find on line some comments about some of his work but an outstanding one is called the Tri-Column. As originally done, it's intended for full range use but the loading of the design simply excels at bass. Very natural sounding. Follow the design exactly to scale to get what's intended. You'd probably have to PM me your email so I could send you a copy of the plans. Kind of hard to find. I got a booklet of Baldock's designs out of Austalia.

3rd - Build a sealed Linkwitz transform sub. Ideal is a .7 qts driver, but the Titanic might be close enough. Simply some of the most tuneful bass you can find when done right! No overhang or slop, nor bass that dies too quick from being too tight. Big excursion is required and this probably can be exceded if not careful on movie soundtrack, but not on music. Highly, highly recommended! Does require some measurements to do it properly and you do have the active eq unit in line. Lots of info on the web and PCB's.

As you might guess, I've found the cylinder design to have some strong merits for bass. A lot of manufacturers get materials on heavy cylinders that are better than the ones for concrete forms. Plus if you can get access, might be cheaper.

CJ

Serendipity

I think I am going to build something like the SVS or HSU cylinder subs.

The main reason I am doing this - all of the rigs at PolkFest had so much bass (the Carver Amazings, for example) compared to my 2 channel which I am seriously lacking in the bass department. Even the little Polk bookshelves (without a sub) put out more bass than I currently have.

The issue is getting this sub to fill a 4,000 cubic ft. room.

Serendipity

Got some paint from the local hardware store:

Now waiting for UPS to deliver the woofer.

EndersShadow

bump... this ever finished?

chandler9a

I would like to see it as well.... I have put together car subs and would like to see how this comes together

Serendipity

EndersShadow wrote: »

bump... this ever finished?

Haha, been busy with work but hope to get around to it soon.

I received the woofer from Parts Express...tested the woofer...that's about it:

Serendipity

I have to say, it sounded quite good in my test box, but haven't built a REAL enclosure for it yet.

EndersShadow

Serendipity wrote: »

I have to say, it sounded quite good in my test box, but haven't built a REAL enclosure for it yet.

Well I got an email from Pittdog with some instructions on a MASSIVE sonotube that is solid down to 17hz. Its got spec's and pics. If you PM me your email I will forward it on.

Its WAAAAYYY to big for my setup, but with your square footage you might just like it.

P.S. thinking I will be using the cheaper Dayton Audio RSS315HO-4 12" Reference HO and more than likely a 16" diameter sonotube. PVC pipe if I can find it and if its not ridiculously expensive.