I have spent the last week on the web trying to find. I never had problems with any of mine save changing the tubes. Can anyone please help me Im looking for the schematic for a Mesa Boogie Multi-Watt Dual Rectifier. I liked that line better than anything else they made back then. I haven't seen a DC5 since I sold mine back then (a LONG time ago).
I didn't do it before I sold mine, but wish I did. Heating them up to where they should be will likely really improve the cleans (so if you like it now, you will like it all that much better). They probably are running the 6L6s fairly cold. If that is the case, you will want to get that modified and that puppy's 6L6s biased properly. The DC5 - if I remember correctly - had a non-adjustable fixed bias. I would only think the DC3 would be fantastic as well.
I have had lots of DC2 and Studio Calibers as well as a DC5. So they just left that part un-populated and made the same board. Same board DC2 and DC3 - makes sense since both are essentially similar except the 3 has a couple more power tubes and the EQ added. If you are building a clone from a Mesa schematic, you should be aware that the schematic will not represent the current models, and you should be prepared to spend time de-bugging and analysing the amp stages, and you might find that the switching does not work as it should. I have seen apparent errors or typo's in the switching matrix of early Nomad and Dual Recto amplifers, switching circuits of the V-Twin pedal, and gain stage, FX loop and reverb send circuits of Mk2C and Mk3 amps. If these are among the components that have failed, the tech must analyse that part of the circuit and make a judgement as to what values to use for the repair - or contact Mesa support, if they are an authorised tech / repairer. When servicing a Mesa amp, it's fairly common to find a couple of preamp plate resistors, cathode bypass caps, interstage resistors and/or caps that are different from the schematic. The schematic that is released can be obsolete already due to the manufacturer making changes after the product launch to fix design problems (following user and service tech feedback), respond to endorsee requests for gain or tonal changes, add extra features or even just to claim it's a new, updated model. This is fairly common among manufacturers, probably to give them time to launch the product, get a profile in the marketplace, get favourable reviews, sell as many amps as possible before the cloners and competitors copy them, etc. Mesa schematics usually take around 3 years to be released to authorised techs after the product is launched. I have found some errors and discrepancies in Mesa Schematics while repairing Mesa amps over the last 20 years,Īlthough I couldn't say whether they are intentional or not. Okgb wrote:Just curious to see it, but can anyone point out some examples of mistakes
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