Building BD Design Quasar Mk II Speakers

SSDIY · 17th March 2011, 12:47 AM

Hi everyone

I am building a pair of the BD design Quasar MKII speakers. I changed the bass driver to Eminence Alpha 15 and remain the Fostex FE206E. Would anyone please tell me what is the original crossover frequency of this design as I can not find the information on the BD Design forum.

Your help in this matter will be greatly appreciately.

Inductor · 17th March 2011, 12:54 PM

(It's yours an active speaker/design, xover?) Is it critical? I'm not very much into this design type. Some relations in design might interest you and others with other similar speakers.
Lothwer OB Eminence Alpha 15As or Augie
it's a post with Fr xover from the main,
Lothwer OB Eminence Alpha 15As or Augie
OB9

Rudolf · 21st March 2011, 11:38 PM

Quote:

Originally Posted by SSDIY

Would anyone please tell me what is the original crossover frequency of this design as I can not find the information on the BD Design forum.

250 Hz. But I can't tell you anything about the filter topology.

Rudolf

SSDIY · 15th April 2011, 04:51 PM

Hi Harvey & Rudolf

Thank you for your inputs. Finally, I finished building of the DB Design OB. I am currently using one driver, the Fostex FE306En only but the sound is amazing. I am prepared to build the crossover lately. I will keep posted.

Godzilla · 15th April 2011, 05:45 PM

That is an excellent design! When you get the woofers connected and at the crossover point you like you will be amazed at the rich, full bass. Enjoy them! They came out great!
Zilla

SSDIY · 18th April 2011, 12:34 PM

Quote:

Originally Posted by Godzilla

That is an excellent design! When you get the woofers connected and at the crossover point you like you will be amazed at the rich, full bass. Enjoy them! They came out great!
Zilla

Hi Zilla

Yes, they are great speakers. I will keep posted as soon as I connect the crossover to the woofers.

Thanks

krigby · 29th December 2011, 05:44 PM

I'm really interested in this design. Where did you get the plans? What drivers are you using? How much power are you using to drive the speakers?

17th March 2011, 12:54 PM	#2
Inductor diyAudio Member Join Date: Feb 2006 Location: Cascais	(It's yours an active speaker/design, xover?) Is it critical? I'm not very much into this design type. Some relations in design might interest you and others with other similar speakers. Lothwer OB Eminence Alpha 15As or Augie it's a post with Fr xover from the main, Lothwer OB Eminence Alpha 15As or Augie OB9 __________________ What the Hell is this crap?! It's not crap, it's muzak.

15th April 2011, 05:45 PM	#5
Godzilla diyAudio Member Join Date: Nov 2005 Location: New York	That is an excellent design! When you get the woofers connected and at the crossover point you like you will be amazed at the rich, full bass. Enjoy them! They came out great! Zilla __________________ www.zillaaudio.com/bib/bib.asp www.ZillaAudio.com

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29th December 2011, 05:44 PM	#7
krigby diyAudio Member Join Date: Aug 2010 Location: Maryland	I'm really interested in this design. Where did you get the plans? What drivers are you using? How much power are you using to drive the speakers?

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