Role of suprabaffle

pathdoc2 · 28th May 2010, 07:14 PM

I've noticed several projects here have suprabaffles. First question, what is their purpose? Second question, would a suprabaffle have any positive or negative effect on a set of half-changs?
All info is deeply appreciated.
thanks

Scottmoose · 28th May 2010, 08:04 PM

You asked & I answered: Which double horn for a tb w4-657?

Generally to lower the baffle-step point; sometimes to change the wavelaunch / edge diffraction characteristics.

Scottmoose · 28th May 2010, 09:47 PM

Some data on baffle-step losses: Baffle Diffraction Step

There are different ways of dealing with it, ranging from ignoring it, to employing some form of active or passive Eq, to using cabinet-gain to self-correct, or drivers with correction built into their response.

planet10 · 28th May 2010, 11:06 PM

Quote:

Originally Posted by Scottmoose

Generally to lower the baffle-step point; sometimes to change the wavelaunch / edge diffraction characteristics.

Let me add a couple pragmatic additional reasons:
1/ the driver is deeper than the box and cabinet depth needs to be increased. Often happens in a BIB, and i personally had this issue when i put FE103A into BK101.
2/ to cover a mistake up (ask Steven (aka Italynstallion) about this, not really his mistake)
3/ make it easy to try different drivers in the same box (our upcoming build of Maeshowe)

dave

Poindexter · 29th May 2010, 03:57 AM

Are we talking about the 'Cain Frisbee' here?

Poinz

planet10 · 29th May 2010, 06:14 AM

Yes, that qualifies as a supraBaffle.

More examples below

dave

28th May 2010, 07:14 PM	#1
pathdoc2 diyAudio Member Join Date: Apr 2010	Role of suprabaffle I've noticed several projects here have suprabaffles. First question, what is their purpose? Second question, would a suprabaffle have any positive or negative effect on a set of half-changs? All info is deeply appreciated. thanks

29th May 2010, 06:14 AM	#6
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Yes, that qualifies as a supraBaffle. More examples below dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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28th May 2010, 08:04 PM	#2
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	You asked & I answered: Which double horn for a tb w4-657? Generally to lower the baffle-step point; sometimes to change the wavelaunch / edge diffraction characteristics.

28th May 2010, 09:47 PM	#3
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Some data on baffle-step losses: Baffle Diffraction Step There are different ways of dealing with it, ranging from ignoring it, to employing some form of active or passive Eq, to using cabinet-gain to self-correct, or drivers with correction built into their response.

29th May 2010, 03:57 AM	#5
Poindexter diyAudio Member Join Date: Oct 2004 Location: Maui, Hawai'i, USA	Are we talking about the 'Cain Frisbee' here? Poinz

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