Voxel - a mini-sub+

[invaderzim]

I know this is an older thread but I just built myself one of these. I wish I had done it years ago. I never really took it seriously as a 'real' subwoofer due to the size but it really performs nicely. I use it with a low powered tube amp for music in a decent sized room; it really adds the lower frequencies and blends easily with my speakers. I've tried 3 other subwoofers ($300 DIY to $700 factory built) in the same setup and this one sounds the best.

I'm going to build a second one for that room and then one more for my computer room setup.

[noviygera]

Here's what I'm talking about. Just finished creating the new post:
http://techtalk.parts-express.com/fo...speaker-design

[Wolf]

You could always look up my OSFA build for inspiration, but even I'm not certain what noviygera is talking about.

Later,
Wolf

[LOUT]

got the hint, thanks. Ordered. BTW, will post my simple design in a new thread. For some reason, none if the DIY solutions solve the few but important basic needs of a common application of "all around" house friendly Bluetooth speaker.

You probably already mentioned earlier, but which important basic needs do you want to see added into more DIY bluetooth speakers to make them more all around house friendly?

At first I thought you might be talking about PR vs ports, but PE sells many passives that are tuned and appearance-matched to work around some of the more common fullrange/bluetooth drivers, so I'm guessing you were referring to other things (or maybe the PR's aren't commonly used despite their availability?).
I've been thinking about building a bluetooth speaker and would like to know some different opinions of things to aim for and things to avoid...preferably before getting too far into a build. On my own I'm sure I'll miss something dumb until about halfway through when I suddently realize; "oh...oh no". :P

[noviygera]

Paul Carmody, what was the software used to create the sketch of the Isetta diagram that includes the measurements?

[noviygera]

got the hint, thanks. Ordered. BTW, will post my simple design in a new thread. For some reason, none if the DIY solutions solve the few but important basic needs of a common application of "all around" house friendly Bluetooth speaker.

[Wolf]

Fantastic, thanks guys. One issue, that 830880 5.25" PR from Peerless is not available anymore. Do I have other replacement options?

Yes it is, just not through PE.
Wolf

[Chris Roemer]

In 0.45cf, a pair of DSA135 PRs (w/8g added, each) tunes to 40Hz, w/an F3 in the high 30s (not as low as a port, but no chuffing).
Cheaper (but taking up more real estate?) would be a single SDDS215 w/50g added. Tunes to 35Hz w/better extension - down to nearly 30Hz.
You could even drop the box volume down to 0.35cf and still maintain a 35Hz F3 (same added mass).
Same F3 in 0.30cf if you add 65g mass to PR.

[noviygera]

Fantastic, thanks guys. One issue, that 830880 5.25" PR from Peerless is not available anymore. Do I have other replacement options?

[Millstonemike]

yup

here it is

http://projectgallery.parts-express....r-mini-system/

design by wolf

Might be hard to translate that design into a 2.1 boombox - physically. The twin PRs will need a lot of surface real estate. And with the full rangers bracketing the woofer, with their own internal enclosure, it may be hard to place the PRs. And the intended use also comes into play. If it's going to "see the world", the PRs are another source of concern for transport damage along with the woofer. If it's going to be an indoor unit, not so much.

[ceiol]

One word... "Triumph"

Do a search for it here on tech talk. It's one of the best small sub designs ever.

TomZ

yup

here it is

http://projectgallery.parts-express....r-mini-system/

design by wolf

[Millstonemike]

... looks like a 2" port would take up some interior space. A pair of PRs -- not.

Two ports can "fit right in"

Also, look up Paul Carmody's Isetta 2.1 boombox design or Pe's silimilar Equivalent Kit, both based on the Voxel.

[tomzarbo]

One word... "Triumph"

Do a search for it here on tech talk. It's one of the best small sub designs ever.

TomZ

[noviygera]

I'm pretty much set on making a portable bluetooth speaker with a pair of fullrangers and THIS sub built into it, with TPS3116D2 2.1ch board.
However, considering one variation:
Has anyone tried using PRs in place of the port? What are the considerations here? looks like a 2" port would take up some interior space. A pair of PRs -- not.

[MLS]

I am building one of these to go with a pair of PS 95 Mini Towers. What would you use for dampening in this build. Polyfill, Sonic barrier ?

Thanks Scott