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 Forum index » DIY Hardware and Software
A treat for Roland 100M lovers - rare schematics!!
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frequencycentral



Joined: May 25, 2008
Posts: 185
Location: UK

PostPosted: Mon May 21, 2012 11:02 am    Post subject: A treat for Roland 100M lovers - rare schematics!! Reply with quote  Mark this post and the followings unread

I've seen most of the 100M schematics elsewhere on the www, but never these (maybe I missed them) which are from my personal stash. So here we have the 165 portamento controller, 173 signal gates and 174 parametric. As far as I know, these three were later modules and don't appear in the original service notes, which can be found here:

http://www.synthfool.com/docs/Roland/system100m/Roland100mServiceManual.pdf

I just got around to scanning them today, and will be hosting them on my website. I built the 173 into a system many years ago, it's a great little module. 174 is probably useful too, but I never built it. As for the 165, hmmm, pretty complex for what it does, never built it or used one.

http://www.frequencycentral.co.uk/wp-content/uploads/2012/05/Roland-100M-165-Portamento.pdf

http://www.frequencycentral.co.uk/wp-content/uploads/2012/05/Roland-100M-173-Signal-Gate.pdf

http://www.frequencycentral.co.uk/wp-content/uploads/2012/05/Roland-100M-174-Parametric.pdf

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StephenGiles



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PostPosted: Mon May 21, 2012 1:19 pm    Post subject: Reply with quote  Mark this post and the followings unread

Many thanks, very interesting.
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Sebo



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PostPosted: Mon May 21, 2012 3:49 pm    Post subject: Reply with quote  Mark this post and the followings unread

Thank you!!!
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frequencycentral



Joined: May 25, 2008
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PostPosted: Mon May 21, 2012 3:52 pm    Post subject: Reply with quote  Mark this post and the followings unread

You're welcome! I'll certainly be doing a layout for the 173 over the coming months.
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vladosh



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PostPosted: Tue May 22, 2012 3:14 am    Post subject: Reply with quote  Mark this post and the followings unread

I downloaded these from your site FC just yesterday ,thanks for sharing ..
btw that signal gate is some sort of vca thing i guess ,right ?
cheers
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Paradigm X



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PostPosted: Tue May 22, 2012 6:06 am    Post subject: Reply with quote  Mark this post and the followings unread

What does the 173 do? Embarassed Smile
Last edited by Paradigm X on Tue May 22, 2012 7:29 am; edited 1 time in total
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vladosh



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PostPosted: Tue May 22, 2012 6:30 am    Post subject: Reply with quote  Mark this post and the followings unread

Looks like equalizer to me ,or something like that ,i just see now it has also Q setting for each band that should be a nice module i think Smile
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Paradigm X



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PostPosted: Tue May 22, 2012 7:28 am    Post subject: Reply with quote  Mark this post and the followings unread

Whoops, i meant 173 Razz
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vladosh



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PostPosted: Tue May 22, 2012 8:21 am    Post subject: Reply with quote  Mark this post and the followings unread

looks very much like a sample and hold ,but maybe not ..
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frequencycentral



Joined: May 25, 2008
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PostPosted: Tue May 22, 2012 2:31 pm    Post subject: Reply with quote  Mark this post and the followings unread

Paradigm X wrote:
What does the 173 do? Embarassed Smile


4 x Signal Gates. Each signal gate kinda like a VCA, but is either on or off, no in betweens. It has both normal and invert control inputs, so you can use two signal gates together for hard panning or multiplexing. If you send a clock through as a signal, and S/H as a controller you can do random gates. Also useful for switching on and off modulation sources. A really useful module.

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vtl5c3



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PostPosted: Mon May 28, 2012 7:51 pm    Post subject:   Reply with quote  Mark this post and the followings unread

Nice. Thanks for posting those!

The Portamento module is strange. Haven't wrapped my brain around it yet.
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Paradigm X



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PostPosted: Tue May 29, 2012 1:14 pm    Post subject: Reply with quote  Mark this post and the followings unread

frequencycentral wrote:
Paradigm X wrote:
What does the 173 do? Embarassed Smile


4 x Signal Gates. Each signal gate kinda like a VCA, but is either on or off, no in betweens. It has both normal and invert control inputs, so you can use two signal gates together for hard panning or multiplexing. If you send a clock through as a signal, and S/H as a controller you can do random gates. Also useful for switching on and off modulation sources. A really useful module.


oh ok cool, sound s fun!
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