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Schematics question

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Mark-NL
Posted on Wednesday, January 25, 2006 - 07:49 am:   

Not sure if it's in the right sub-forum, but this one looked as the most appropriate.

I have no idea how to read these amp schematics, but I'd like check if the schematics listed in Schematicspage for the "2475-75 and 2275-75" are schematics with the solid state driver or with the tube driver.

The reason I ask is that i'm going to have a guy service my 212-Seventyfive (solid state), and I wanna give him the schematics so he has some reference...

If it's the one with the tube driver, could it still be used (for the most part) for the SS version?

Thanks (i'm a bit anxious about the whole service thing, kinda affraid that my baby will get hurt..)
mike kaus
Posted on Thursday, January 26, 2006 - 04:21 am:   

No-the schematics and the whole design are different. The tube driver is a standard neg fixed/adj bias amp and the ss 's are a cathode driven amp with POSITIVE voltage on the control grid. The right schematic SHOULD be there for your amp though. Mike.