Dipole - VPL-concept

Audiodidakt · 20th May 2009, 10:00 AM

Hi

Can somebody please explain the dipole VPL-concept? (Variabel path length).

Does the concept implement asymetric "sidebars"/wings (wings of different shape and size on the two sides) or can sidebars on both sides be identical but be shaped as a triangle, i.e. giving different path length all according to hight on baffel?

Audiodidakt · 20th May 2009, 09:29 PM

Bump!

Please, can somebody please advice me?

taloyd · 20th May 2009, 09:39 PM

Here's two pictures capturing the idea:

http://www.michaelvalentinestudio.co.../picture24.php

http://www.pureaudiollc.com/Angels.htm

In this case, a picture is worth a thousand words.

Hope this helps,
-tal

PeteMcK · 21st May 2009, 02:50 AM

a variation on the theme, a bit closer to home:
http://www.forsman.no/

gainphile · 21st May 2009, 03:03 AM

Hi,

My understanding is a rectangular baffle is enough "variable" acoustically?

The least variable being a round baffle.

Rudolf · 21st May 2009, 07:42 AM

Audiodidakt,

AFAIK "Variable Path Length" (VPL) has been brought into discussion by diyAudio Member "Overkill Audio" solely. Why don´t you ask him in the first place for a deeper explanation?

Rudolf

BTW: I would not "buy" such a concept without seeing measurements before/after.

20th May 2009, 10:00 AM	#1
Audiodidakt diyAudio Member Join Date: Nov 2005 Location: Norway	Dipole - VPL-concept Hi Can somebody please explain the dipole VPL-concept? (Variabel path length). Does the concept implement asymetric "sidebars"/wings (wings of different shape and size on the two sides) or can sidebars on both sides be identical but be shaped as a triangle, i.e. giving different path length all according to hight on baffel?

20th May 2009, 09:39 PM	#3
taloyd diyAudio Member Join Date: Apr 2004 Location: Los Angeles, CA, USA	two pictures illustrating VPL Here's two pictures capturing the idea: http://www.michaelvalentinestudio.co.../picture24.php http://www.pureaudiollc.com/Angels.htm In this case, a picture is worth a thousand words. Hope this helps, -tal

21st May 2009, 02:50 AM	#4
PeteMcK diyAudio Member Join Date: Feb 2002 Location: Sydney	a variation on the theme, a bit closer to home: http://www.forsman.no/ __________________ ‘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

21st May 2009, 03:03 AM	#5
gainphile diyAudio Member Join Date: Dec 2007 Location: Melbourne the sunny city!	Hi, My understanding is a rectangular baffle is enough "variable" acoustically? The least variable being a round baffle. __________________ http://gainphile.blogspot.com

21st May 2009, 07:42 AM	#6
Rudolf diyAudio Member Join Date: Mar 2003 Location: Germany	Audiodidakt, AFAIK "Variable Path Length" (VPL) has been brought into discussion by diyAudio Member "Overkill Audio" solely. Why don´t you ask him in the first place for a deeper explanation? Rudolf BTW: I would not "buy" such a concept without seeing measurements before/after. __________________ www.dipolplus.de


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20th May 2009, 09:29 PM	#2
Audiodidakt diyAudio Member Join Date: Nov 2005 Location: Norway	Bump! Please, can somebody please advice me?

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