Any 3-way using Vifa P11MH09 out there?

GOWA · 26th January 2008, 09:55 PM

I was given a pair of Vifa P11MH09 mids as a gift and would like to use them in a 3-way. Does anyone know of an existing design out there?

Thanks

MJL21193 · 26th January 2008, 11:23 PM

Hi,
I recently bought them to use here in an active 3-way I've built.
These mids are very good, you won't be disappointed with their sound.

Andy G · 26th January 2008, 11:56 PM

Blackwood uses the M11WH or is WG.. same'o for mids.

Very nice clean mid. Try to use it open back if you can, you will love them !!!

http://members.optusnet.com.au/~grad...blackwood.html

MJL21193 · 27th January 2008, 12:20 AM

Quote:

Originally posted by Andy Graddon

Very nice clean mid. Try to use it open back if you can, you will love them !!!

I'm in complete agreement - open backed mids do sound better.
I'm considering chopping a big hole in the back of mine! How to do it and make it look like that's the way I planned it? Do you think a bunch of 1" holes will do the trick?

Andy G · 27th January 2008, 12:25 AM

you don't want the frame on a 5" more than about 3" deep, or you will get cavity resonances, which is exactly what you don't want !!

MJL21193 · 27th January 2008, 12:46 AM

How about the holes and some stuffing? Chamber isn't very deep (maybe 6" at the bottom, 3" at the top.

Andy G · 27th January 2008, 12:52 AM

line the insides of the sides with some 'stuff"

MJL21193 · 27th January 2008, 01:01 AM

I have the inside lined with the styrofoam wedges and found that this was not effective, so I was adding some polyfil stuffing with the speaker playing. Taking the mid out and just holding it in my hand while I put the stuffing in showed an improvement in the sound. I thought :too bad I didn't make these open back".
So I may try it.
I'll need a couple of stiff drinks to get my nerve up enough to drill holes into my finished cabs

Andy G · 27th January 2008, 01:05 AM

Chain Saw !!!

MJL21193 · 27th January 2008, 01:09 AM

Quote:

Originally posted by Andy Graddon
Chain Saw !!!

Nah, chain saws too subtle. Shaped charge with 1kg of Semtex.

26th January 2008, 09:55 PM	#1
GOWA diyAudio Member Join Date: Jan 2007 Location: Ontario	Any 3-way using Vifa P11MH09 out there? I was given a pair of Vifa P11MH09 mids as a gift and would like to use them in a 3-way. Does anyone know of an existing design out there? Thanks __________________ Website

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26th January 2008, 11:23 PM	#2
MJL21193 Account disabled at member's request Join Date: Mar 2007	Hi, I recently bought them to use here in an active 3-way I've built. These mids are very good, you won't be disappointed with their sound.

26th January 2008, 11:56 PM	#3
Andy G diyAudio Member Join Date: Apr 2002 Location: Newcastle, Australia	Blackwood uses the M11WH or is WG.. same'o for mids. Very nice clean mid. Try to use it open back if you can, you will love them !!! http://members.optusnet.com.au/~grad...blackwood.html

27th January 2008, 12:25 AM	#5
Andy G diyAudio Member Join Date: Apr 2002 Location: Newcastle, Australia	you don't want the frame on a 5" more than about 3" deep, or you will get cavity resonances, which is exactly what you don't want !!

27th January 2008, 12:46 AM	#6
MJL21193 Account disabled at member's request Join Date: Mar 2007	How about the holes and some stuffing? Chamber isn't very deep (maybe 6" at the bottom, 3" at the top.

27th January 2008, 12:52 AM	#7
Andy G diyAudio Member Join Date: Apr 2002 Location: Newcastle, Australia	line the insides of the sides with some 'stuff"

27th January 2008, 01:01 AM	#8
MJL21193 Account disabled at member's request Join Date: Mar 2007	I have the inside lined with the styrofoam wedges and found that this was not effective, so I was adding some polyfil stuffing with the speaker playing. Taking the mid out and just holding it in my hand while I put the stuffing in showed an improvement in the sound. I thought :too bad I didn't make these open back". So I may try it. I'll need a couple of stiff drinks to get my nerve up enough to drill holes into my finished cabs

27th January 2008, 01:05 AM	#9
Andy G diyAudio Member Join Date: Apr 2002 Location: Newcastle, Australia	Chain Saw !!!

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