Cgs synth

>Hey guys, I would like to build a stereo version of the res. eq.
>The idea would be to build a desktop box that i can run my master bus from

>
>I was wondering if anyone could offer any practical advice as far as

>
>At first thought i was going to use dual gang pots but then have read the

>Do you guys know of any other affordable solutions ?
>
>I assumed to match all the caps in the filter sections.Other than that and

>
>Thanks for any insight you guys can share.
>
>-Tony
>
>
>
>------------------------------------
>
>The CGS Modular Synth home page: http://www.cgs.synth.net/
>Yahoo! Groups Links
>
>
>
>

--- In cgs_synth@yahoogroups.com, sasami@... wrote:
>
> Thoughts:
>
> You could make some "switched attenuators" instead of using pots - basically
> dual gang rotary switches with 1% resistors between each step. That of
> course gets very expensive.
>
> You could buy a few pots and test them, and see how bad they really are.
> Maybe you can pic the best.
>
> Maybe it would be better if each channel could be adjusted individually anyway.
>
> Ken
>
> >Hey guys, I would like to build a stereo version of the res. eq.
> >The idea would be to build a desktop box that i can run my master bus from
> my mixer through.
> >
> >I was wondering if anyone could offer any practical advice as far as
> getting close to the same response from both boards ?
> >
> >At first thought i was going to use dual gang pots but then have read the
> tolerances between the 2 sections can be 10-20 % different.
> >Do you guys know of any other affordable solutions ?
> >
> >I assumed to match all the caps in the filter sections.Other than that and
> the pots i figured this should be doable for a reasonable cost but maybe i'm
> dreaming ?
> >
> >Thanks for any insight you guys can share.
> >
> >-Tony
> >
> >
> >
> >------------------------------------
> >
> >The CGS Modular Synth home page: http://www.cgs.synth.net/
> >Yahoo! Groups Links
> >
> >
> >
> >
> _______________________________________________________________________
> Ken Stone sasami@... otherunicorn@...
> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>

On 4/2/13, adematteo <adematteo@...> wrote:
>
>
> Individual control over left and right may be the most economical way to go
> but i think i will order a hand full and do as you suggest to see just how
> off they are.
>
> Thanks Ken, all food for thought.
>
> --- In cgs_synth@yahoogroups.com, sasami@... wrote:
>>
>> Thoughts:
>>
>> You could make some "switched attenuators" instead of using pots -
>> basically
>> dual gang rotary switches with 1% resistors between each step. That of
>> course gets very expensive.
>>
>> You could buy a few pots and test them, and see how bad they really are.
>> Maybe you can pic the best.
>>
>> Maybe it would be better if each channel could be adjusted individually
>> anyway.
>>
>> Ken
>>
>> >Hey guys, I would like to build a stereo version of the res. eq.
>> >The idea would be to build a desktop box that i can run my master bus
>> > from
>> my mixer through.
>> >
>> >I was wondering if anyone could offer any practical advice as far as
>> getting close to the same response from both boards ?
>> >
>> >At first thought i was going to use dual gang pots but then have read
>> > the
>> tolerances between the 2 sections can be 10-20 % different.
>> >Do you guys know of any other affordable solutions ?
>> >
>> >I assumed to match all the caps in the filter sections.Other than that
>> > and
>> the pots i figured this should be doable for a reasonable cost but maybe
>> i'm
>> dreaming ?
>> >
>> >Thanks for any insight you guys can share.
>> >
>> >-Tony
>> >
>> >
>> >
>> >------------------------------------
>> >
>> >The CGS Modular Synth home page: http://www.cgs.synth.net/
>> >Yahoo! Groups Links
>> >
>> >
>> >
>> >
>> _______________________________________________________________________
>> Ken Stone sasami@... otherunicorn@...
>> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
>> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>>
>
>
>


--
www.loscha.com

On 4/2/13, sasami@... <sasami@...> wrote:
>>If you wired up the two resistive elements across, say, a 9v battery,
>>and then hooked each of the sweeping legs across both channels of a
>>scope, you'd get a pretty accurate measurement of the two tapers.
>
> A plain old multimeter would do. You want the voltage between the two
> wipers
> to stay at zero.
>
> Ken
>
> _______________________________________________________________________
> Ken Stone sasami@... otherunicorn@...
> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
>
>


--
www.loscha.com

--- In cgs_synth@yahoogroups.com, Loscha <loscha@...> wrote:
>
> That is a bit more elegant than my idea.
> Maybe try that one first!
>
> On 4/2/13, sasami@... <sasami@...> wrote:
> >>If you wired up the two resistive elements across, say, a 9v battery,
> >>and then hooked each of the sweeping legs across both channels of a
> >>scope, you'd get a pretty accurate measurement of the two tapers.
> >
> > A plain old multimeter would do. You want the voltage between the two
> > wipers
> > to stay at zero.
> >
> > Ken
> >
> > _______________________________________________________________________
> > Ken Stone sasami@... otherunicorn@...
> > Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> > Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
> >
> >
>
>
> --
> www.loscha.com
>

--- In cgs_synth@yahoogroups.com, Loscha <loscha@...> wrote:
>
> If you wired up the two resistive elements across, say, a 9v battery,
> and then hooked each of the sweeping legs across both channels of a
> scope, you'd get a pretty accurate measurement of the two tapers.
>
> /ErJ
>
> On 4/2/13, adematteo <adematteo@...> wrote:
> >
> >
> > Individual control over left and right may be the most economical way to go
> > but i think i will order a hand full and do as you suggest to see just how
> > off they are.
> >
> > Thanks Ken, all food for thought.
> >
> > --- In cgs_synth@yahoogroups.com, sasami@ wrote:
> >>
> >> Thoughts:
> >>
> >> You could make some "switched attenuators" instead of using pots -
> >> basically
> >> dual gang rotary switches with 1% resistors between each step. That of
> >> course gets very expensive.
> >>
> >> You could buy a few pots and test them, and see how bad they really are.
> >> Maybe you can pic the best.
> >>
> >> Maybe it would be better if each channel could be adjusted individually
> >> anyway.
> >>
> >> Ken
> >>
> >> >Hey guys, I would like to build a stereo version of the res. eq.
> >> >The idea would be to build a desktop box that i can run my master bus
> >> > from
> >> my mixer through.
> >> >
> >> >I was wondering if anyone could offer any practical advice as far as
> >> getting close to the same response from both boards ?
> >> >
> >> >At first thought i was going to use dual gang pots but then have read
> >> > the
> >> tolerances between the 2 sections can be 10-20 % different.
> >> >Do you guys know of any other affordable solutions ?
> >> >
> >> >I assumed to match all the caps in the filter sections.Other than that
> >> > and
> >> the pots i figured this should be doable for a reasonable cost but maybe
> >> i'm
> >> dreaming ?
> >> >
> >> >Thanks for any insight you guys can share.
> >> >
> >> >-Tony
> >> >
> >> >
> >> >
> >> >------------------------------------
> >> >
> >> >The CGS Modular Synth home page: http://www.cgs.synth.net/
> >> >Yahoo! Groups Links
> >> >
> >> >
> >> >
> >> >
> >> _______________________________________________________________________
> >> Ken Stone sasami@ otherunicorn@
> >> Modular Synth PCBs for sale <http://www.cgs.synth.net/>
> >> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
> >>
> >
> >
> >
>
>
> --
> www.loscha.com
>

--- In cgs_synth@yahoogroups.com, "adematteo" <adematteo@...> wrote:
>
>
> Well, i built it and for anyone interested i put i pic up in the photo's section.http://groups.yahoo.com/group/cgs_synth/photos/album/1538675616/pic/1794994871/view?picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc
>
> Thanks so much Ken 1) for doing these boards and 2) for your suggestion of doing 2 separate controls for each band,you can create some really cool imaging in the stereo field.

--- In cgs_synth@yahoogroups.com, "xiphiguy@..." <xiphiguy@...> wrote:
>
> The front panel looks very nice! Did you do that part yourself?
> ~Terry
>
> --- In cgs_synth@yahoogroups.com, "adematteo" <adematteo@> wrote:
> >
> >
> > Well, i built it and for anyone interested i put i pic up in the photo's section.http://groups.yahoo.com/group/cgs_synth/photos/album/1538675616/pic/1794994871/view?picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc
> >
> > Thanks so much Ken 1) for doing these boards and 2) for your suggestion of doing 2 separate controls for each band,you can create some really cool imaging in the stereo field.
>

--- In cgs_synth@yahoogroups.com, "adematteo" <adematteo@...> wrote:
>
>
> Hi Terry,
> I did do the front panel.It's made out of birch plywood that's 1/8" thick.I was planning on doing it in aluminum but got a bit nervous about routing out the aluminum so tried it with the wood first to see if the jig i made was working correctly and realized once i mounted the sliders it provided enough strength so just went with it.
>
> Thanks for the nice replies guys !
>
>
> --- In cgs_synth@yahoogroups.com, "xiphiguy@" <xiphiguy@> wrote:
> >
> > The front panel looks very nice! Did you do that part yourself?
> > ~Terry
> >
> > --- In cgs_synth@yahoogroups.com, "adematteo" <adematteo@> wrote:
> > >
> > >
> > > Well, i built it and for anyone interested i put i pic up in the photo's section.http://groups.yahoo.com/group/cgs_synth/photos/album/1538675616/pic/1794994871/view?picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc
> > >
> > > Thanks so much Ken 1) for doing these boards and 2) for your suggestion of doing 2 separate controls for each band,you can create some really cool imaging in the stereo field.
> >
>

--- In cgs_synth@yahoogroups.com, "xiphiguy@..." <xiphiguy@...> wrote:
>
> Would you be willing to post photos of how you accomplished cutting the slots so accurately with your router and jig? I had assumed this would be impossible to do without professional level equipment.
> ~Terry
>
> --- In cgs_synth@yahoogroups.com, "adematteo" <adematteo@> wrote:
> >
> >
> > Hi Terry,
> > I did do the front panel.It's made out of birch plywood that's 1/8" thick.I was planning on doing it in aluminum but got a bit nervous about routing out the aluminum so tried it with the wood first to see if the jig i made was working correctly and realized once i mounted the sliders it provided enough strength so just went with it.
> >
> > Thanks for the nice replies guys !
> >
> >
> > --- In cgs_synth@yahoogroups.com, "xiphiguy@" <xiphiguy@> wrote:
> > >
> > > The front panel looks very nice! Did you do that part yourself?
> > > ~Terry
> > >
> > > --- In cgs_synth@yahoogroups.com, "adematteo" <adematteo@> wrote:
> > > >
> > > >
> > > > Well, i built it and for anyone interested i put i pic up in the photo's section.http://groups.yahoo.com/group/cgs_synth/photos/album/1538675616/pic/1794994871/view?picmode=&mode=tn&order=ordinal&start=1&count=20&dir=asc
> > > >
> > > > Thanks so much Ken 1) for doing these boards and 2) for your suggestion of doing 2 separate controls for each band,you can create some really cool imaging in the stereo field.
> > >
> >
>