FR taming tricks - Page 3

Moondog55 · 3rd December 2008, 10:38 PM

Luckily the one I ruined was a pair of old paper edge Magnavox and cost me whole dollar including boxes, and I still have the boxes, good boxes too, i'll be using them for a small bass driver soon

fredex · 3rd December 2008, 10:50 PM

Moondog55, care to share what you did? I might learn one more thing not to do.

Moondog55 · 3rd December 2008, 11:25 PM

I can't find the thread
So i wanted to return these Magnavos to original bright scarlet colour, I mad the mistake os using OVA glue to stiffen the cone then put the alcohol based tint in them instant warp and ruined.
I should have used the tint first; allowed all of the alcohol to evaporate anf THEN coated the drivers ( if that was needed ) all I know is that waroed they sounded absolutely awful and found an instant home in the round filing cabinet

planet10 · 4th December 2008, 06:07 AM

Quote:

Originally posted by fredex
Now I have Visaton B200s and often gaze at those dust caps....

Dust caps come off, phase plugs go in, top end becones much more balanced with better dispersion.

The only B200 that have gotten my full treatment are in the Far East (Singapore, Malaysia? i'd have to dig it out) so i had no long term exposure.

Graham Maynard has taken another approach.

dave

fredex · 4th December 2008, 09:25 AM

Hi, planet10, I like the look of your phase plugs but so far it is only temptation. Actually the beaming doesn't seem to be the problem, I think now it is just the rising response that I am hearing and a little gentle eq seems to fix that in the preamp. I previously tried the inductor with parallel res in series with the driver, not a good solution IMHO.
What is the other solution?

fredex · 4th December 2008, 09:34 AM

Moondog55
Easy to do and not fixable. Have you seen the felt pads on the cones of the 12" drivers used in the Bastanis? Depending on the glue this is a reversable mod that could be useful.:

3rd December 2008, 10:38 PM	#21
Moondog55 diyAudio Member Join Date: Jun 2007 Location: Norlane; Geelong: Victoria: Australia	Luckily the one I ruined was a pair of old paper edge Magnavox and cost me whole dollar including boxes, and I still have the boxes, good boxes too, i'll be using them for a small bass driver soon __________________ QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING"

3rd December 2008, 11:25 PM	#23
Moondog55 diyAudio Member Join Date: Jun 2007 Location: Norlane; Geelong: Victoria: Australia	I can't find the thread So i wanted to return these Magnavos to original bright scarlet colour, I mad the mistake os using OVA glue to stiffen the cone then put the alcohol based tint in them instant warp and ruined. I should have used the tint first; allowed all of the alcohol to evaporate anf THEN coated the drivers ( if that was needed ) all I know is that waroed they sounded absolutely awful and found an instant home in the round filing cabinet __________________ QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING"

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3rd December 2008, 10:50 PM	#22
fredex diyAudio Member Join Date: Jul 2005 Location: New Zealand	Moondog55, care to share what you did? I might learn one more thing not to do.

4th December 2008, 09:25 AM	#25
fredex diyAudio Member Join Date: Jul 2005 Location: New Zealand	Hi, planet10, I like the look of your phase plugs but so far it is only temptation. Actually the beaming doesn't seem to be the problem, I think now it is just the rising response that I am hearing and a little gentle eq seems to fix that in the preamp. I previously tried the inductor with parallel res in series with the driver, not a good solution IMHO. What is the other solution?

4th December 2008, 09:34 AM	#26
fredex diyAudio Member Join Date: Jul 2005 Location: New Zealand	Moondog55 Easy to do and not fixable. Have you seen the felt pads on the cones of the 12" drivers used in the Bastanis? Depending on the glue this is a reversable mod that could be useful.:

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