Re: set-up tuning
Fender amplifiers do not have what is commonly referred to as vibrato.
They amplitude modulate. They used two basic circuits for this
modulation. The first is a tube oscillator circuit that varies the bias
to the output tubes this was used on the early Concerts and Supers along
with the Bandmaster 3-10 and the Princeton's. I also think the Pro and
Tremolux used the same circuit. The second more common Blackface circuit
uses an opto coupler device with a neon bulb that's flashed on and off by
an oscillator circuit this in turn is coupled with a light dependent
resistor that goes off and on to the beat of the flashing light turning
the output tubes on and off. FJM
This archive was generated by a fusion of
Pipermail 0.09 (Mailman edition) and
MHonArc 2.6.8.