Cgs synth

>Richard,
>
>Thanks very much, i really appreciate it! Between your pictures and the
>helpful comments on the CGS list, i've got a much better idea of how to
>proceed. i'm sure that others on the list would appreciate seeing your
>work, if you'd care to upload these photos to the file area.
>
>this weekend i finished wiring up my Wave Multiplier... nice voicing
>affect, i think it'll be very musically useful. i think ken is providing a
>phenomenal service.
>
>again, many thanks to you (& your wife). best wishes for the holidays.
>
>
>regards
>
>
>
>
>
>
>

From: "Larry Hendry" <hendrysr@...>
To: <cgs_synth@yahoogroups.com>
Sent: Wednesday, December 17, 2003 7:37 PM
Subject: [cgs_synth] Wave Multiplier


> --- Richard Brewster <pugix@...> wrote:
> > I am getting interested in the Wave Multiplier, too.
>
> Highly recommended by me and others.
>
> > There is a Stooge panel for it.
>
> Indeed. We also have the ASR and the drum simulator. And, I can
> assure you that the number of CGS Stooge panels will increase in the
> next go around. I just got a stack of 8 more CGS boards myself.
>
> BTW Ken, my PCBs arrrived OK today. Thanks
>
> I want to do a second version panel for the dual ASR. After I built
> mine, it occurred to me that there is really no reason for the clock
> to be external. So, I plan to do a small circuit with one 556 and a
> dual op amp. I will scale the 556 to provide 2 clocks that operate
> over the useful range (all opinions appreciated and considered). The
> dual op amp will be LED drivers so I can see the clock rate.
>
> The new panel will have 2 pots, 2 LEDs and 10 jacks (not room for 12
> jacks). I cannot decide if I want to have a clock IN that overrides
> the internal clock, OR if I want to have a clock out to take
> advantage of using the same clock for other things. Maybe I'll do
> one of each.
>
> Larry H
>
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>

> I think there would be room for 12 sockets [6 rows] (based on
> previous cgs panel designs that I have done) - the only 'problem'
> would be that the rows of sockets would not line up with the
> spacing on standard motm style panels.
>
> A trade-off of looks vs. function - I'd go for function.
>
> Just my annoying $.02, Jeff

> --- Richard Brewster <pugix@n...> wrote:
> > I am getting interested in the Wave Multiplier, too.
>
> Highly recommended by me and others.
>

> -----Original Message-----
> From: sasami@... [mailto:sasami@...]
>
> >Has any one built the Wave Multiplier in addition to Oakley's
> >Wavefolder?
>
> Tony himself. He didn't build mine but he did build a very similar one.
> His
> comment is that it requires two of his WaveFolders in series to do
> anything
> like this one does.
>
> Ken

>
>
> >Has any one built the Wave Multiplier in addition to Oakley's
> >Wavefolder?
>
> Tony himself. He didn't build mine but he did build a very similar

> comment is that it requires two of his WaveFolders in series to do

> like this one does.
>

--- In cgs_synth@yahoogroups.com, "elle_webb" <elle_webb@h...> wrote:
> --- In cgs_synth@yahoogroups.com, sasami@h... wrote:
> >
> >
> > >Has any one built the Wave Multiplier in addition to Oakley's
> > >Wavefolder?
> >
> > Tony himself. He didn't build mine but he did build a very similar
> one. His
> > comment is that it requires two of his WaveFolders in series to do
> anything
> > like this one does.
> >
>
> Thanks Ken and John for the feedback. Sounds like I'll want to build
> this, after all!

>Hi Ken,
>
>Just a quick question regarding the Wavemultiplier. I was
>breadboarding it up last night, and I found that the pulse out
>quickly turns to a triangle wave as the frequency is increased.
>
>The 'scope reveals that this is due to slew rate limiting of the
>LM324 as it tries to crash from rail to rail at only 0.5V/uS. I'm
>just curious; is this by design to mimic what the original Serge unit
>did?
>
>I intend to put a TL074 in for IC4 which has a better slew rate of
>13V/uS and sharpen up those edges. I'll also attenuate the output as
>+/-15V is a bit hot :-0
>
>Fun Circuit, but I must admit I haven't listened to it yet. Lots of
>pretty pictures on the 'scope tho'.
>
>All the best
>
>Andy
>---
>
>Andy Wilson
>http://www.techman.synth.net
>andy@...
>
>
>
>
>See the following URLS for the CGS Modular Synth home page:
>Main: http://www.cgs.synth.net/
>Secondary: http://otherunicorn.0catch.com/synth/
>Yahoo! Groups Links
>
>
>
>
>
>
>
>

--- In cgs_synth@yahoogroups.com, "Andy Wilson" <andy@t...> wrote:
> Hi Ken,
>
> Just a quick question regarding the Wavemultiplier. I was
> breadboarding it up last night, and I found that the pulse out
> quickly turns to a triangle wave as the frequency is increased.
>
> The 'scope reveals that this is due to slew rate limiting of the
> LM324 as it tries to crash from rail to rail at only 0.5V/uS. I'm
> just curious; is this by design to mimic what the original Serge
unit
> did?
>
> I intend to put a TL074 in for IC4 which has a better slew rate of
> 13V/uS and sharpen up those edges. I'll also attenuate the output
as
> +/-15V is a bit hot :-0
>
> Fun Circuit, but I must admit I haven't listened to it yet. Lots of
> pretty pictures on the 'scope tho'.
>
> All the best
>
> Andy
> ---
>
> Andy Wilson
> http://www.techman.synth.net
> andy@t...

> Thanks for the tip. I must say, I'm not particularly worried about
>using the fastest possible amp, and after putting in a TL074, I'm
>quite happy with the waveshape coming out now.

>In fact, I'm eying up that spare amp on IC2d which I still have as an
>LM324, and I think I'll put a switch in to select between 'hard' and
>'soft' pulse output. :->)

> > The 'scope reveals that this is due to slew rate limiting of the
> > LM324 as it tries to crash from rail to rail at only 0.5V/uS. I'm
> > just curious; is this by design to mimic what the original Serge
> unit
> > did?
> >
> > I intend to put a TL074 in for IC4 which has a better slew rate of
> > 13V/uS and sharpen up those edges. I'll also attenuate the output
> as
> > +/-15V is a bit hot :-0

> >
> > All the best
> >
> > Andy

On 11 Mar 2005 at 21:35, z_flash_ram wrote:

>
> Hi,
>
> Andy, which LM324 are you replacing with a TL074?
> I'm also curious about your 'hard/soft' mod and its installation, too.
> I'll be building my 1st CGS wavemultiplier in a couple weeks.
>
> Regards,
> Chris
--
Andy Wilson
http://www.techman.synth.net
mailto:andy@...