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New Serge style ASR and VCS for Euro!
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Author New Serge style ASR and VCS for Euro!
widgetoz
Wiggling with Experience


Joined: 02 May 2009
Last Visit: 28 Jan 2015

Posts: 417
Location: Sydney, Australia

PostPosted: Sun Mar 11, 2012 12:41 am    Post subject: Reply with quote Add User to Ignore List

gwaidan wrote:
clarke68 wrote:
Mildly off-topic, but releated...is this a new module as well:



...? I don't recall seeing it before...obviously I need to start paying more attention to Elby.


That one (and the Octave/Volts/Hertz) has been kicking around on Laurie's site as coming soon since about 2008. :)

pulse_divider wrote:
Veqtor wrote:
pulse_divider wrote:
the CGS one I have is not really usable for pitch. I guess it's possible that it has a technical problem, but it seems to be functioning (despite being sloppy on pitch) as intended and there don't appear to be any trimpots to calibrate.


Did you build it yourself? Capacitor choice seems to be very important.


Nope, it's a Metalbox build... Top notch quality.
I just google searched and found I'm not alone:
http://electro-music.com/forum/post-327227.html


That thread seems to offer a solution-it's variable offsets in the hold amplifiers. Maybe National LF411As would be a good solution to that?


Don't worry, this time it IS for real.
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gwaidan
Super Deluxe Wiggler


Joined: 07 Mar 2009
Last Visit: 29 Jan 2015

Posts: 1869
Location: Sydney

PostPosted: Sun Mar 11, 2012 7:46 am    Post subject: Reply with quote Add User to Ignore List

widgetoz wrote:
gwaidan wrote:
clarke68 wrote:
Mildly off-topic, but releated...is this a new module as well:



...? I don't recall seeing it before...obviously I need to start paying more attention to Elby.


That one (and the Octave/Volts/Hertz) has been kicking around on Laurie's site as coming soon since about 2008. smile



Don't worry, this time it IS for real.


Yay!!! Great to see these two out in the wild at last! It's peanut butter jelly time!

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lordofthebored wrote:
Any news on this yet? I just sold all my other modules of this type so I could replace it with this different implementation of the same thing!
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KNYST
hiding in the forest


Joined: 26 Jan 2009
Last Visit: 29 Jan 2015

Posts: 2753
Location: the Taiga, Sweden

PostPosted: Sun Mar 11, 2012 12:57 pm    Post subject: Reply with quote Add User to Ignore List

ASR kit! Yum! nanners

What are the measurements of the pcb?

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widgetoz
Wiggling with Experience


Joined: 02 May 2009
Last Visit: 28 Jan 2015

Posts: 417
Location: Sydney, Australia

PostPosted: Sun Mar 11, 2012 7:26 pm    Post subject: Reply with quote Add User to Ignore List

falafelbiels wrote:
So how deep will this VCS be then?






:hyper:
kits!

7.3cm
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KNYST
hiding in the forest


Joined: 26 Jan 2009
Last Visit: 29 Jan 2015

Posts: 2753
Location: the Taiga, Sweden

PostPosted: Tue Mar 13, 2012 7:42 pm    Post subject: Reply with quote Add User to Ignore List

Depth of ASR?
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patch responsibly.
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>> The KNYST GONG performances!
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gwaidan
Super Deluxe Wiggler


Joined: 07 Mar 2009
Last Visit: 29 Jan 2015

Posts: 1869
Location: Sydney

PostPosted: Tue Mar 13, 2012 11:25 pm    Post subject: Reply with quote Add User to Ignore List

pulse_divider wrote:
Veqtor wrote:
pulse_divider wrote:
the CGS one I have is not really usable for pitch. I guess it's possible that it has a technical problem, but it seems to be functioning (despite being sloppy on pitch) as intended and there don't appear to be any trimpots to calibrate.


Did you build it yourself? Capacitor choice seems to be very important.


Nope, it's a Metalbox build... Top notch quality.
I just google searched and found I'm not alone:
http://electro-music.com/forum/post-327227.html


Have a look at the schematics on Laurie's site-looks like he's modded the circuit quite a bit including offset trimmers on all the hold amplifiers and using a modern low on-resistance DG409 instead of the original's generic CD4052 CMOS switch. It should be better-performing than the CGS original (or the Metalbox).

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lordofthebored wrote:
Any news on this yet? I just sold all my other modules of this type so I could replace it with this different implementation of the same thing!
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widgetoz
Wiggling with Experience


Joined: 02 May 2009
Last Visit: 28 Jan 2015

Posts: 417
Location: Sydney, Australia

PostPosted: Wed Mar 14, 2012 3:32 pm    Post subject: Reply with quote Add User to Ignore List

KNYST wrote:
Depth of ASR?

7.5cm
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Arcade Sinusoid
Veteran Wiggler


Joined: 22 Dec 2010
Last Visit: 26 Jan 2015

Posts: 592
Location: Chicago

PostPosted: Wed Mar 14, 2012 6:08 pm    Post subject: Reply with quote Add User to Ignore List

These look great! May have to pop my kit cherry! oops
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J
Veteran Wiggler


Joined: 21 Mar 2010
Last Visit: 22 Jan 2015

Posts: 553
Location: Yorkshire

PostPosted: Thu Mar 15, 2012 10:46 am    Post subject: Reply with quote Add User to Ignore List

been looking at a few kits recently, and the VCS looks like the one to go for.
are these only available direct from elby?

cheers
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Isaiah
Super Deluxe Wiggler


Joined: 02 Jun 2010
Last Visit: 29 Jan 2015

Posts: 1303

PostPosted: Thu Mar 15, 2012 11:28 am    Post subject: Reply with quote Add User to Ignore List

Does anybody know the depth of the VCS at all?
Thanks!
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flashheart
Super Deluxe Wiggler


Joined: 01 Jun 2009
Last Visit: 29 Jan 2015

Posts: 1038

PostPosted: Thu Mar 15, 2012 12:12 pm    Post subject: Reply with quote Add User to Ignore List

Isaiah wrote:
Does anybody know the depth of the VCS at all?
Thanks!

widgetoz wrote:

PostPosted: Sun Mar 11, 2012 11:26 pm
Quote:
falafelbiels wrote:
So how deep will this VCS be then?
hyper
kits!

7.3cm
hihi

Question to Widgetoz - can I just buy a panel? I've got the VCS CGS kit (note to self: finish it!)
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Isaiah
Super Deluxe Wiggler


Joined: 02 Jun 2010
Last Visit: 29 Jan 2015

Posts: 1303

PostPosted: Thu Mar 15, 2012 1:06 pm    Post subject: Reply with quote Add User to Ignore List

Oops!
Thanks!
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craque
xenochronous wiggler


Joined: 15 Nov 2011
Last Visit: 27 Jan 2015

Posts: 418
Location: SoCal / Fullerton

PostPosted: Thu Mar 15, 2012 1:39 pm    Post subject: Reply with quote Add User to Ignore List

i am ALL OVER a serge VCS kit!!!! woot! hyper
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zanadar
Common Wiggler


Joined: 11 Jul 2011
Last Visit: 10 Jun 2014

Posts: 124
Location: Brooklyn, NY

PostPosted: Mon Mar 26, 2012 1:01 pm    Post subject: Reply with quote Add User to Ignore List

Ooh!
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richard
bananaphile


Joined: 14 Mar 2009
Last Visit: 29 Jan 2015

Posts: 7739

PostPosted: Mon Mar 26, 2012 1:05 pm    Post subject: Reply with quote Add User to Ignore List

zanadar wrote:
Ooh!


Post Of The Month!

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Monobass
thonk.co.uk


Joined: 29 May 2009
Last Visit: 29 Jan 2015

Posts: 8303
Location: Brighton, UK

PostPosted: Mon Mar 26, 2012 2:37 pm    Post subject: Reply with quote Add User to Ignore List

Hey Widgetoz, did you check the droop on the ASR?
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Thonk - Modular Synth DIY + Eurorack Accessories Store
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otherunicorn
Santa


Joined: 20 Feb 2009
Last Visit: 25 Dec 2014

Posts: 498

PostPosted: Sun Apr 01, 2012 3:48 am    Post subject: Reply with quote Add User to Ignore List

pulse_divider wrote:
If that's the same CGS ASR that I have from Metalbox in frac format, it droops like a motherfucker and is useless for pitch


Did you bother to contact Metalbox about it? You certainly didn't contact me.
It is a circuit that depends very much on the parts used. There is one type of caps that are guaranteed to fail. Personally, I have built a dozen of the things, and they ALL worked fine within reasonable limits. If you are expecting it to hold voltages for several minutes, you are dreaming. That is not it's purpose. None the less, I have had respected DIYers claiming their builds were as stable as the MOTM Sample and Hold. I've had the very occasional person who can't get it right make a lot of complaints to the public - but again not to me. You'd think that I would be the first person they asked.
I have sold hundreds of the thing, and there are only a handful of people who have complained. Each time dozens of others jumped to the design's defense, so I guess there must be other people who have successfully built them. As for the few failures I know about, only one contacted me about it, and it was built using the capacitors I mentioned above, which is how I know about them.
I discontinued it a couple years ago because of the suggested new design that came up during one of the online discussions, but people kept demanding I release it again, so there you have it. Laurie's new release the CGS734 is the NEW design I intended to replace my old CGS34 with, and is based on the experiments of one of the members here Dr. Sketch-n-Etch. It is a new design using a new set of chips. It is no longer restricted by the inadequacies of the 4052 chip, instead using a chip that can work directly across the voltage range. As such, none of the compression/decompression is needed in the new design, and that alone halves any possible droop rate, and removes several sources for possible inaccuracy. More modern op-amps are also used, so you don't have differences between the individual 3140 causing offsets.

The old thread discussing the new design is here: http://www.muffwiggler.com/forum/viewtopic.php?t=12080&postdays=0&post order=asc&highlight=asr&start=0

I hope that clears it all up.

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You got that resistor in backwards...


Last edited by otherunicorn on Sun Apr 01, 2012 4:07 am; edited 4 times in total
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otherunicorn
Santa


Joined: 20 Feb 2009
Last Visit: 25 Dec 2014

Posts: 498

PostPosted: Sun Apr 01, 2012 3:51 am    Post subject: Reply with quote Add User to Ignore List

J wrote:
been looking at a few kits recently, and the VCS looks like the one to go for.
are these only available direct from elby?


Yes.

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You got that resistor in backwards...
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J
Veteran Wiggler


Joined: 21 Mar 2010
Last Visit: 22 Jan 2015

Posts: 553
Location: Yorkshire

PostPosted: Sun Apr 01, 2012 6:06 am    Post subject: Reply with quote Add User to Ignore List

otherunicorn wrote:
J wrote:
been looking at a few kits recently, and the VCS looks like the one to go for.
are these only available direct from elby?


Yes.


cool, thanks.
will be keeping my eye on the VCS becoming available w00t
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Mood Organ
Veteran Wiggler


Joined: 17 Dec 2008
Last Visit: 29 Jan 2015

Posts: 608
Location: Seattle

PostPosted: Tue May 08, 2012 6:46 pm    Post subject: Reply with quote Add User to Ignore List

pulse_divider wrote:
If that's the same CGS ASR that I have from Metalbox in frac format, it droops like a motherfucker and is useless for pitch


Yeah, that was a real kick in the balls when I got mine. Very disappointing.
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