joessportster Posted January 12, 2020 Share Posted January 12, 2020 Curious if anyone has used the Curico Mods on a dynaco MK 3, I happened upon a pair at a good deal. ? I need to figure out how to check & set Bias Quote Link to comment Share on other sites More sharing options...
amped Posted January 13, 2020 Share Posted January 13, 2020 I have no experience with any Curcio stuff but this might be helpful... http://dynaco-doctor.net/sup_3.htm Quote Link to comment Share on other sites More sharing options...
NOSValves Posted January 14, 2020 Share Posted January 14, 2020 Joe I used Curcio stuff many years ago but my memory is to foggy on it to help you. Contact Joe I'm sure he'll help you out. Quote Link to comment Share on other sites More sharing options...
joessportster Posted January 14, 2020 Author Share Posted January 14, 2020 10 hours ago, NOSValves said: Joe I used Curcio stuff many years ago but my memory is to foggy on it to help you. Contact Joe I'm sure he'll help you out. Hey Craig Thanks I have spoke with Joe he is very receptive and helpful. Problem is I dont know what he talking about in regards to whats what on the mods that were done to the amps. The story I got on them was a gent bought them had all the Curico Mods done. in the interim he switched speakers, so when he got the amps back he put them on a shelf for 6 years. What I found is someone elses name on the Box that Curico shipped them to and I can see differences in the parts used on the Bias boards. I can not believe Curico would put different parts in a pair of amps. I cant believe any decent tech would do that. I am of the opinion some one upgraded the amps using Joes parts at different times and now I have to consider that as a problem. Joe wants me to send them in but that will be a while and the added expense might not be worth while in the end (value VS what $$ invested) I installed the tubes and shorting plugs and powered the amps on, No issues in that but without knowing the Bias and how to go about setting it I am not hooking them up to my speakers 😎 Quote Link to comment Share on other sites More sharing options...
NOSValves Posted January 15, 2020 Share Posted January 15, 2020 Joe, If you can take some detailed photos top, bottom and I'll take a peak and see if I can figure something out for you. Be patient my available time is very limited these days.. I agree if he did both amps parts would match in both amps Quote Link to comment Share on other sites More sharing options...
karlson3 Posted January 26, 2020 Share Posted January 26, 2020 do they use the Hedge type 6922/6DJ8 differential cascode front end? - just curious as once had a GSI (Andy Fuchs) Dynaco Stereo 70 with that front end = very good sound and FWIW, "better" to me than the pentode gain/split phase inverter Dynaco 6AN8/7199 arrangement with my Klipschorns. That said, I do think my brand new MKIII ~47 years ago did well with Speakerlab's ripoff of the K-horn. I did not like ARC's D90 - too colored and dull. Quote Link to comment Share on other sites More sharing options...
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