What dimensions were your B200 open baffle designs?

maxwalrath · « **on:** 20 Apr 2006, 05:32 am »

Thanks....any pictures or opinions about the sound would also be cool.

mcgsxr · « **Reply #1 on:** 20 Apr 2006, 01:45 pm »

I started out with 36x48, then carved them up into foldable baffles slightly shorter.

See my gallery for the pics.

Have fun!

mcgsxr · « **Reply #2 on:** 20 Apr 2006, 01:56 pm »

And then...

Folsom · « **Reply #3 on:** 20 Apr 2006, 02:42 pm »

I thought these were pretty interesting...

http://www.omegaloudspeakers.com/aperiodic%208.htm

Either are really easy to build.... Has any one tried infinate baffle?

Russell Dawkins · « **Reply #4 on:** 20 Apr 2006, 07:36 pm »

This fellow has, apparently, though not with a lot of space behind them.

http://www.audiocircle.com/index.php?topic=26755

Russell

JohninCR · « **Reply #5 on:** 28 Apr 2006, 04:13 am »

The pair in the middle are my B200 OB-RLH's. They are 13" in depth. IMHO infinite baffle isn't going to work. Look at Visaton's FR. That's IB and the uptilted response is only good for "chamber music". Even with my extreme efforts to create bass I still have to attenuate a significant portion of the HF content in the rear wave to get anything remotely close to an acceptably flat response (and they are still quite forward sounding). I do get good solid bass with an F3 in the low 40's.

Occam · « **Reply #6 on:** 28 Apr 2006, 02:11 pm »

Well, these are obviously not B200s, but my 18yr old Alons with the 5" mid in a 9"x12" flat baffle preforming midrange duties above 350hz

Here are some links to discussions & software for determining baffle dimensions -
http://www.musicanddesign.com/roomgain2.html
http://melhuish.org/audio/software.html
http://melhuish.org/audio/baffle.html
http://www.linkwitzlab.com/frontiers.htm
http://www.pvconsultants.com/audio/boxmodel/uhframe.htm

FWIW,
Paul

mcgsxr · « **Reply #7 on:** 28 Apr 2006, 02:52 pm »

The most critical thing that I have found, in getting balanced sound out of my b200's, has been amp synergy.

The Teacs, modded and stock, did not work for me.
The Panny receivers did better, and when you incorporate the bass boost, get close.
The gainclone is on par with the Panny receivers I have tried.

The single best thing, has been this JVC EX-A1 - perfect. I know that nodiak has one, and has reported some mid bass bloom in his room, but in my large, open, unfinished basement, this baby is the TRICK.

It even has a sub out, that trims the mains, so it does it ALL for me. Works well with my modded SB3 front end too, and plays nicely with my Felicia.

Well worth a hunt for a used one, if b200's are in your future!

http://www.jvc.com/product.jsp?modelId=MODL027205&pathId=11&page=1&archive=true

barfind · « **Reply #8 on:** 28 Apr 2006, 05:45 pm »

This my take on the B200. The design satifys my passion for detail, and my need to make an unusual looking speaker. The driver is magnet mounted. They sound amazing.

[/img]

lonewolfny42 · « **Reply #9 on:** 29 Apr 2006, 06:02 am »

barfind....Nice work !! Can you tell me....from the center of your speaker, down to the floor (base)....how many inches is that ? Thanks...enjoy !!

Chris[/list:u]

barfind · « **Reply #10 on:** 29 Apr 2006, 10:34 am »

Hi Chris The driver is 36" to the centre. Heres the baffle dimensions. I made them from 25mm HDF, and venered then with teak veneer.

Nigel