BVR theory

Tyimo · 25th September 2009, 05:57 PM

Hi!

This question is basicaly for Scott and Dave:
What is the theory of the BVR calculation and planing?
I mean, how you choose the :
- chamber volume
- horn throat size
- horn mouth size
- horn lenght

Greets:

Tyimo

Scottmoose · 09:09 PM

Depends on the driver, design goals & a host of other factors TBH, so no simple answer, let alone a single answer I'm afraid. Did you have a specific driver in mind? I'm away for a few days but if so, I'll try to help out when I get back & have chance.

Tyimo · 26th September 2009, 06:40 AM

Quote:

Did you have a specific driver in mind?

Not, yet. You should use for demonstration a driver from one of your design.

Tyimo

rjbond3rd · 26th September 2009, 03:28 PM

Hi Scott, wow this would be amazing to peek inside your methodology.

Having heard your Harveys (built by Mssr. Phil Townsend), I am still haunted by how great and inexplicably huge they sound. One felt "bathed" in sound. That system (in that room etc.) is to date my standard of audio perfection.

For some reason, horns and horn-like speakers just cry out to be understood. I'm on my third year of trying but it's a tough slog.

rjbond3rd · 26th September 2009, 04:03 PM

How about a "half Iris" with the FE167E? A sort of mini-Replikon?

planet10 · 26th September 2009, 04:37 PM

Half-Chili would fill that role. Do keep in mind that the Changs have superceded Harvey/Iris/Bruce.

dave

rjbond3rd · 26th September 2009, 05:23 PM

Hi Dave, I was thinking very literally of a box with an expo vent, since Tyimo was one of the original enthusiasts for the Replikon, and he was very keen to understand it. (And there is still something magical about Harvey - maybe the big mouth area and path length?)

Tyimo · 26th September 2009, 05:58 PM

Quote:

since Tyimo was one of the original enthusiasts for the Replikon, and he was very keen to understand it.

Yes, it is true. On the end of that discourse I understanded the Replikon sucessfuly.

I built some Replikon style loudspeaker with great result. That Hornlautsprecher theory is realy works.
Now I would like to understand the BVR's theory what is similar to the Replikons.(some way...)
Tyimo

planet10 · 26th September 2009, 06:00 PM

The Replikon is a specific example of a BVR.

dave

Tyimo · 26th September 2009, 06:45 PM

Quote:

The Replikon is a specific example of a BVR.

Yes, but the way how Ralf and Till from Hornlautsprecher calculating and designing is a bit different from yours. I think....

Tyimo

25th September 2009, 05:57 PM	#1
Tyimo diyAudio Member Join Date: Nov 2002 Location: Hungary	BVR theory Hi! This question is basicaly for Scott and Dave: What is the theory of the BVR calculation and planing? I mean, how you choose the : - chamber volume - horn throat size - horn mouth size - horn lenght Greets: Tyimo

25th September 2009, 09:05 PM	#2
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Depends on the driver, design goals & a host of other factors TBH, so no simple answer, let alone a single answer I'm afraid. Did you have a specific driver in mind? I'm away for a few days but if so, I'll try to help out when I get back & have chance. Last edited by Scottmoose; 25th September 2009 at 09:09 PM.

26th September 2009, 04:37 PM	#6
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Half-Chili would fill that role. Do keep in mind that the Changs have superceded Harvey/Iris/Bruce. dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

26th September 2009, 06:00 PM	#9
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	The Replikon is a specific example of a BVR. dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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26th September 2009, 03:28 PM	#4
rjbond3rd diyAudio Member Join Date: Jan 2007	Hi Scott, wow this would be amazing to peek inside your methodology. Having heard your Harveys (built by Mssr. Phil Townsend), I am still haunted by how great and inexplicably huge they sound. One felt "bathed" in sound. That system (in that room etc.) is to date my standard of audio perfection. For some reason, horns and horn-like speakers just cry out to be understood. I'm on my third year of trying but it's a tough slog.

26th September 2009, 04:03 PM	#5
rjbond3rd diyAudio Member Join Date: Jan 2007	How about a "half Iris" with the FE167E? A sort of mini-Replikon?

26th September 2009, 05:23 PM	#7
rjbond3rd diyAudio Member Join Date: Jan 2007	Hi Dave, I was thinking very literally of a box with an expo vent, since Tyimo was one of the original enthusiasts for the Replikon, and he was very keen to understand it. (And there is still something magical about Harvey - maybe the big mouth area and path length?)

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