Latest incarnation of my open baffle/dipole speaker

tom1356 · 16th May 2004, 11:51 PM

It's a beyrllium ribbon tweeter, a boron/titanium 3" fullrange on a leather covered corian baffle, and three 12" graphite composite woffers. My goal was to try to get away with no equilization. It seems to be flat to about 40 hz. I will be playing around with crossover points till I'm old and grey it seems, but the sound right now is very satisfying. I need to do a finish on the W baffles, but I havn't decided how just yet.
Any sugestions?

454Casull · 17th May 2004, 12:20 AM

Ah, interesting design, to say the least.

Bose(o) · 17th May 2004, 01:35 AM

Very nice and welcome to the half-completed Open Baffle Club. Right now I have finished my mid-high panel in veneer with semi-dark stain-don't remember what colour. For low-end I have a single Illusion Audio LM-804, seems to do the trick with my budget. It resides in an H-baffle and is bare MDF. I will be finishing it in veneer and may try using rubbing oils or marine resin, still unsure. Anyway, looks to sound nice and hope everything works out!

HeatMiser · 17th May 2004, 04:35 AM

Impressive.

Are you using passive crossovers by any chance? I'd be very interested in hearing about your strategy for matching levels and combatting dipole bass rolloff, if you're willing to share any information about that.

Peter Daniel · 17th May 2004, 04:37 AM

Everything that comes from Tom is impressive.

tom1356 · 17th May 2004, 09:32 PM

Quote:

Originally posted by HeatMiser
Impressive.

Are you using passive crossovers by any chance? I'd be very interested in hearing about your strategy for matching levels and combatting dipole bass rolloff, if you're willing to share any information about that.

I am breaking all the rules. I use passive crossovers and one 8 watt SET 300b mono block amp per side. The tweeter is crossed at 12k 1st order. The mid is run full range with a home made 8 ohm silver wire non inductive resistor in series. The woofers are crossed at 150 hz Linkwitz-Riley 2 nd order.

Quote:

Originally posted by Peter Daniel
Everything that comes from Tom is impressive.

You are to kind. I aspire to your standards.
Have you started your Halo's yet?

johninCR · 17th May 2004, 10:34 PM

Tom,
With the 2nd order xover on the woofer, was it necessary to change its wiring polarity to integrate it with the full-range driver?

tom1356 · 17th May 2004, 10:58 PM

Quote:

Originally posted by johninCR
Tom,
With the 2nd order xover on the woofer, was it necessary to change its wiring polarity to integrate it with the full-range driver?

JohninCR
Yes the woffers are out of phase with the full range.

Timn8ter · 17th May 2004, 11:10 PM

Please tell the true story of the squiggly boards behind the speakers.

tom1356 · 17th May 2004, 11:41 PM

Quote:

Originally posted by Timn8ter
Please tell the true story of the squiggly boards behind the speakers.

I could tell you but then I'd have to...well you know.
They are copys of these.
http://www.enjoythemusic.com/superio...hallograph.htm

17th May 2004, 01:35 AM	#3
Bose(o) diyAudio Member Join Date: Dec 2001 Location: Ottawa, Ontario, Canada	Very nice and welcome to the half-completed Open Baffle Club. Right now I have finished my mid-high panel in veneer with semi-dark stain-don't remember what colour. For low-end I have a single Illusion Audio LM-804, seems to do the trick with my budget. It resides in an H-baffle and is bare MDF. I will be finishing it in veneer and may try using rubbing oils or marine resin, still unsure. Anyway, looks to sound nice and hope everything works out! __________________ ERTW 4 life! "the day has 24hours. If that is not enough take the night."-Roemhild

17th May 2004, 04:37 AM	#5
Peter Daniel diyAudio Member Join Date: Jul 2002 Location: Toronto, Canada	Everything that comes from Tom is impressive. __________________ www.audiosector.com “Do something really well. See how much time it takes. It might be a product, a work of art, who knows? Then give it away cheaply, just because you feel that it should not cost so much, even if it took a lot of time and expensive materials to make it.” - JC

17th May 2004, 10:34 PM	#7
johninCR diyAudio Member Join Date: Apr 2004 Location: Costa Rica	Tom, With the 2nd order xover on the woofer, was it necessary to change its wiring polarity to integrate it with the full-range driver? __________________ Everyone has a photographic memory. It's just that most are out of film.

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
My open baffle dipole with Beyma TPL-150	StigErik	Multi-Way	1196	18th May 2012 12:19 PM
My latest: Open baffle mid, Lambda TD12H, B&C 6md38, Peerless HDS	dlneubec	Multi-Way	15	1st January 2010 03:10 PM
Latest incarnation of music angel kt88	DC2100	Tubes / Valves	8	28th January 2009 11:35 PM
Open baffle/ dipole design help	Infinity buff	Multi-Way	3	12th April 2006 02:19 AM


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

17th May 2004, 12:20 AM	#2
454Casull diyAudio Member Join Date: Jan 2004 Location: Toronto, ON, Canada	Ah, interesting design, to say the least.

17th May 2004, 04:35 AM	#4
HeatMiser diyAudio Member Join Date: May 2003 Location: Washington State, USA	Impressive. Are you using passive crossovers by any chance? I'd be very interested in hearing about your strategy for matching levels and combatting dipole bass rolloff, if you're willing to share any information about that.

17th May 2004, 11:10 PM	#9
Timn8ter diyAudio Member Join Date: Jul 2003 Location: Seattle, WA	Please tell the true story of the squiggly boards behind the speakers.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read