DIY sub - where to start?

[drspluteron]

I recently purchased Polk monitor 70's and a CS2 center channel to go along with them. I've had a 5.1 system for a while, but have decided it's time for an overhaul. So, along with my new front/center speakers, I'd like to get a new sub. I use it mostly for movies, but also for music, probably 70-30. My room is approx 25ft by 15ft, with openings into a hallway and kitchen. However, the couch is situated in the middle of the room (half of the room is used as a dining room), so we sit about 10 feet from the tv.

I've done a lot of reading in these forums and see that the highest recommended brands seem to be HSU, eD, and SVS. I spoke to someone at eD and he recommended the A5-350 as a minimum for my room. I'm sure it would be a great sub, but I was hoping to stay under $500 or less. I'm not opposed to doing a DIY sub, but I have no idea where to get started.

Is there a comparable kit out there that would be less expensive that someone could recommend? Or if I start from scratch, how would I know what size sub, which amp, etc to use?

Any help would be greatly appreciated! Thanks!

 

[jliedeka]

If you can build a well braced box, you can put together a decent sub for under $500 that will meet your needs. You should really check out the DIY sub forums on Home Theater Shack. There are other DIY sites but you can find a lot of published designs in one place.

The first thing is to define your goals. How much extension do you want and how low do you want it to go? Are you ok with a big box or do you want something small? The usual rule of thumb is small, cheap and low extension - pick two.

Jim

 

[lsiberian]

I think drmarksays.com offers plenty of great options.

The Dayton Reference series would be an excellent and economical choice.

Bracing need not be substantial for a subwoofer because the panel resonances that color sound are higher than the subwoofer range. Of course some bracing is always good. Tools and materials will cost you more in the initial product than the driver/amp combos.