Ok. I'm sure the tech will hook a scope up to it and figure out the problem. Thanks again, Mr. Fahey.
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Show posts MenuQuote from: J M Fahey on April 11, 2013, 07:11:43 PMJ M Fahey, thank you!!!! I really appreciate this. I'll check the speakers tomorrow when I go back to the shop. They are both stamped "4 ohms", but I didn't notice anything indicating that they were Jensen speakers. They probably are Jensens.
*All* amps distort beyond a certain volume.
Usually around 6 or 7 , but you probably have hotter pickups than those available in 1967, so distorting above above 4 does not mean it's "broken".
That said, clean it is, within its ratings, but 45W was "loud" ... in 1967, not much today.
This amp has a peculiarity: given the transistors available in 1967, it provides 45W RMS ... into 2 ohms.
The original speaker complement was 2 excellent Jensens (C12N?) but 4 ohms each, so they supply 2 ohms total.
If you plug this amp into a standard 8 ohms speaker, it will provide around 15 clean watts.
Even if it has the original speakers, of which I am not so certain after that many years, maybe they have been (improperly) reconed with 8 ohms coils.
Please check that.
Depends on what you play, but around 50W with 2 good and matched speakers (as it was originally made) provides good clean sound in a Jazz, Pop, Country or light Rock setting; not much of a sweet warm Blues machine and forget it for Metal.