Is this right?

lepomis · 15th September 2009, 05:00 AM

I am reading through a speaker design book. Trying to figure out about driver placement in enclosures and I came across a few statements that didn't make sense to me.

1. adjacent drivers should be mounted as close to each other as is practical.

2. The worst situation would be a circular baffle with the driver placed in the center. (see picture)

Are these statement basically correct?

Glowbug · 15th September 2009, 05:08 AM

The first about adjacent drivers tries to follow the "point source" concept...you want everything coming from the same general point, or in the case of multiple drivers playing the same frequency range, to minimize comb filtering effects.

As for the second, that'd be news to me...I don't know. Seems like a lot of BIB builds, for example (including Terry's original) use circular suprabaffles to minimize baffle step issues...did that on mine, too.

PeteMcK · 15th September 2009, 05:13 AM

yes & yes;
Re the circular baffle, it gives the worst diffraction pattern.
I suggest you download the 'Edge' which shows how baffle shape & driver placement affect the output

Richard Ellis · 15th September 2009, 05:29 AM

Yes indeed, read 'The Edge'.....Another huge body of science , complete with formulas,formulas,formulas.........just when you thought you had it covered.......someone has brought you more math to digest.
__________________________________________________ _-Rick.......

lepomis · 15th September 2009, 05:39 AM

Thanks guys! And I'll check out the edge as well. I had seen so many enclosures with round baffles, I thought they were ok.

orbanp · 15th September 2009, 01:25 PM

Quote:

Originally Posted by Richard Ellis

Yes indeed, read 'The Edge'.....Another huge body of science , complete with formulas,formulas,formulas.........just when you thought you had it covered.......someone has brought you more math to digest.
__________________________________________________ _-Rick.......

Could you please provide a link to the above?

Thanks, Peter

5th element · 15th September 2009, 01:43 PM

Quote:

Originally Posted by orbanp

Could you please provide a link to the above?

Thanks, Peter

http://www.tolvan.com/edge/help.htm

Glowbug · 15th September 2009, 03:57 PM

Interesting thread here about this: supraBaffles & wavelaunch

lepomis · 15th September 2009, 07:56 PM

Glowbug, thank you much for the link... very helpful info

Quote:

Originally Posted by Glowbug

Interesting thread here about this: supraBaffles & wavelaunch

orbanp · 15th September 2009, 09:19 PM

Many thanks for the links!

Peter

15th September 2009, 05:00 AM	#1
lepomis diyAudio Member Join Date: Mar 2008	Is this right? I am reading through a speaker design book. Trying to figure out about driver placement in enclosures and I came across a few statements that didn't make sense to me. 1. adjacent drivers should be mounted as close to each other as is practical. 2. The worst situation would be a circular baffle with the driver placed in the center. (see picture) Are these statement basically correct?

15th September 2009, 05:08 AM	#2
Glowbug diyAudio Member Join Date: Feb 2006 Location: Hillsborough, NC/McLean, VA	The first about adjacent drivers tries to follow the "point source" concept...you want everything coming from the same general point, or in the case of multiple drivers playing the same frequency range, to minimize comb filtering effects. As for the second, that'd be news to me...I don't know. Seems like a lot of BIB builds, for example (including Terry's original) use circular suprabaffles to minimize baffle step issues...did that on mine, too. __________________ Jim J.

15th September 2009, 05:13 AM	#3
PeteMcK diyAudio Member Join Date: Feb 2002 Location: Sydney	yes & yes; Re the circular baffle, it gives the worst diffraction pattern. I suggest you download the 'Edge' which shows how baffle shape & driver placement affect the output __________________ ‘today… there lives alongside the twentieth century the tenth or thirteenth. A hundred million people use electricity and still believe in the magic power of signs and exorcisms” Trotsky

15th September 2009, 03:57 PM	#8
Glowbug diyAudio Member Join Date: Feb 2006 Location: Hillsborough, NC/McLean, VA	Interesting thread here about this: supraBaffles & wavelaunch __________________ Jim J.

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15th September 2009, 05:29 AM	#4
Richard Ellis diyAudio Member Join Date: Sep 2006 Location: Mar del Plata, a BIG seasonal getaway city, can see the Ocean from our residence.	Yes indeed, read 'The Edge'.....Another huge body of science , complete with formulas,formulas,formulas.........just when you thought you had it covered.......someone has brought you more math to digest. __________________________________________________ _-Rick.......

15th September 2009, 05:39 AM	#5
lepomis diyAudio Member Join Date: Mar 2008	Thanks guys! And I'll check out the edge as well. I had seen so many enclosures with round baffles, I thought they were ok.

15th September 2009, 09:19 PM	#10
orbanp diyAudio Member Join Date: Jul 2007	Many thanks for the links! Peter

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