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#1
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DIY parametric EQ ?
Would anyone have pointers to the schematics of a good-souding
parametric equaliser that doesn't require hard to find components, like reverse-log pots ? -- André Majorel URL:http://www.teaser.fr/~amajorel/ "Cette supposition rappelle assez celle de ce prédicateur qui, en pleine chaire, faisait remarquer à ses fidèles la bonté de Dieu qui avait placé les rivières auprès des villes." -- Alexandre Dumas |
#2
Posted to rec.audio.tech
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DIY parametric EQ ?
Andre,
Would anyone have pointers to the schematics of a good-souding parametric equaliser that doesn't require hard to find components, like reverse-log pots ? Here ya go: http://www.ethanwiner.com/spectrum.html The parametric EQ is about halfway down the page. --Ethan |
#3
Posted to rec.audio.tech
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DIY parametric EQ ?
On 2008-05-24, Ethan Winer ethanw wrote:
Would anyone have pointers to the schematics of a good-souding parametric equaliser that doesn't require hard to find components, like reverse-log pots ? Here ya go: http://www.ethanwiner.com/spectrum.html The parametric EQ is about halfway down the page. Thanks, Ethan. I see the frequency pot is a dual gang linear. Since dual pots typically have poor matching, this will limit the Q. Especially at the anti-clockwise end where the control is more sensitive (I assume the frequency is linearly related to the wiper position). Are there ways around that ? -- André Majorel URL:http://www.teaser.fr/~amajorel/ "Cette supposition rappelle assez celle de ce prédicateur qui, en pleine chaire, faisait remarquer à ses fidèles la bonté de Dieu qui avait placé les rivières auprès des villes." -- Alexandre Dumas |
#4
Posted to rec.audio.tech
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DIY parametric EQ ?
On Sun, 25 May 2008 08:35:20 +0000 (UTC), Andre Majorel
wrote: On 2008-05-24, Ethan Winer ethanw wrote: Would anyone have pointers to the schematics of a good-souding parametric equaliser that doesn't require hard to find components, like reverse-log pots ? Here ya go: http://www.ethanwiner.com/spectrum.html The parametric EQ is about halfway down the page. Thanks, Ethan. I see the frequency pot is a dual gang linear. Since dual pots typically have poor matching, this will limit the Q. Especially at the anti-clockwise end where the control is more sensitive (I assume the frequency is linearly related to the wiper position). Are there ways around that ? Aside from expensive pots, the most obvious route for me would be to get a few voltage-controlled electronic pots. Kal |
#5
Posted to rec.audio.tech
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DIY parametric EQ ?
"Andre Majorel" wrote in message ... On 2008-05-24, Ethan Winer ethanw wrote: Would anyone have pointers to the schematics of a good-souding parametric equaliser that doesn't require hard to find components, like reverse-log pots ? Here ya go: http://www.ethanwiner.com/spectrum.html The parametric EQ is about halfway down the page. Thanks, Ethan. I see the frequency pot is a dual gang linear. Since dual pots typically have poor matching, this will limit the Q. Especially at the anti-clockwise end where the control is more sensitive (I assume the frequency is linearly related to the wiper position). Are there ways around that ? Google "DIY stepped attenuator". Gareth. -- André Majorel URL:http://www.teaser.fr/~amajorel/ "Cette supposition rappelle assez celle de ce prédicateur qui, en pleine chaire, faisait remarquer à ses fidèles la bonté de Dieu qui avait placé les rivières auprès des villes." -- Alexandre Dumas |
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