Overdrive Special, Steel String Singer, Dumbleland, Odyssey, Winterland, etc. -
Moderators: pompeiisneaks , Colossal
Aaron
Posts: 642 Joined: Wed Feb 08, 2006 1:07 pm
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by Aaron Wed Oct 30, 2013 2:30 pm
Thought I would have a go at tidying up the blurry hand drawn layout that is supposed to be ODRS #13, dated 8th August 76.
Circuit is not 100% confirmed. Some values that I couldn't make out I took from the 2nd Gen files.
I have not built or tested so assume it has errors.
If anybody knows or has seen this amp I would appreciate any input. Feel free to send me anyhting
Thanks,
Aaron
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M Fowler
Posts: 14017 Joined: Wed Jan 16, 2008 2:19 amLocation: Walcott ND
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by M Fowler Wed Oct 30, 2013 3:05 pm
There are the photos of #60 and Normster's ODR but not sure how much different they are from #13.
mobisimo
Posts: 72 Joined: Wed May 11, 2005 12:19 pmLocation: Massachusetts
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by mobisimo Fri Nov 01, 2013 2:45 pm
Well crafted; thanks for your work!
AtomCap
Posts: 189 Joined: Sat Feb 12, 2011 7:18 am
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by AtomCap Mon Nov 04, 2013 5:18 am
gonna take a swing at this one..
David Root
Posts: 3540 Joined: Fri Aug 04, 2006 3:00 pmLocation: Chilliwack BC
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by David Root Mon Nov 04, 2013 5:25 am
Thanx for your work! Much easier on the eyes than the drawing that's for sure!
Structo
Posts: 15446 Joined: Wed Oct 17, 2007 1:01 amLocation: Oregon
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by Structo Mon Nov 04, 2013 4:50 pm
Great job on those Aaron.
Tom
txbluesboy
Posts: 387 Joined: Mon Apr 02, 2007 3:52 pmLocation: Dallas area
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by txbluesboy Tue Nov 05, 2013 4:35 pm
Can someone shed some light on what is happening between The reverb return(V2A) and The mixer(V4A) in regards to the .1uf cap in series with 100K and 100R cathode resistor lift?
txbluesboy
Posts: 387 Joined: Mon Apr 02, 2007 3:52 pmLocation: Dallas area
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by txbluesboy Tue Nov 05, 2013 5:26 pm
I realize thats it's a LNFB loop, but why here?
PaisleyTube
Posts: 208 Joined: Fri Feb 24, 2006 11:29 amLocation: Vleuten, The Netherlands
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by PaisleyTube Sun Nov 17, 2013 11:30 pm
txbluesboy wrote: I realize thats it's a LNFB loop, but why here?
well, let's call Howard!
(to add smoothness, a bit of compression, etc.)
Chris
bcmatt
Posts: 693 Joined: Wed Jul 25, 2007 9:35 pmLocation: Canada
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by bcmatt Sat Mar 22, 2014 12:26 am
Am I crazy, or is the reverb BEFORE the OD? Is that intentional? It seems that it would have the same problem I am having in my own Traynor YGL3 HRM, where anything but minimal reverb gets out of control once the OD is switched on...
amplifiednation
Posts: 2070 Joined: Sun Dec 26, 2010 6:19 pmLocation: Boston
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by amplifiednation Sat Mar 22, 2014 11:49 am
...
Last edited by
amplifiednation on Mon Feb 15, 2016 8:49 pm, edited 1 time in total.
Amplified Nation
amplifiednation
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by amplifiednation Sat Mar 22, 2014 11:57 am
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Amplified Nation
ElectronAvalanche
Posts: 374 Joined: Mon Feb 06, 2006 9:17 pm
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by ElectronAvalanche Sat Mar 22, 2014 1:25 pm
Here are some pics I took of an ODSR some time ago. Hope this helps!
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Aaron
Posts: 642 Joined: Wed Feb 08, 2006 1:07 pm
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by Aaron Sat Mar 22, 2014 2:39 pm
ElectronAvalanche wrote: Here are some pics I took of an ODSR some time ago. Hope this helps!
I'm so happy right now I could cry
Thank you so much for these.
Aaron
Aaron
Posts: 642 Joined: Wed Feb 08, 2006 1:07 pm
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by Aaron Sat Mar 22, 2014 2:44 pm
amplifiednation wrote: I don't get the node F on the power supply and what it's connecting to? The plates should be getting 400v from the reverb transformer, is there more voltage being fed in from that node to the plates of v3?
"F" connects to the mixer valve. That's what I could guess from the blurry hand drawn.
Aaron
