Would it be too far of a stretch to guess you like tube amps better? Too bad they're so damned expensive. -Vincent Deno > John Payson wrote: > > > My point was that if a transistor and tube amplifier are both set up > > for an 8 ohm load, are fed a 1KHz sine wave, and have the gain control > > set for 8 watts' output, the transistor amplifier will try to output 8 > > volts RMS (into whatever load is actually attached) while the tube > > amplifier will try to output 1 amp RMS (into whatever load is act- > > ually attached). > > Unless, as Bob said, it uses feedback, in which case its behaviour > driving a variety of loads will approximate the transistor one. > > > In the extreme cases, a transistor amplifier has no problem driving an > > open-circuited load but may be damaged by a shorted output. Tube > > amplifiers have no objection to driving a short, but may be damaged if > > operated for too long open-circuit. > > Of course, the two exceptions here are the transistor amplifier fitted > to the Siemens 2000 16mm movie projector around 1968 which blew the > output devices *instantly* if activated without the speaker fitted, and > valve amplifiers with feedback which would tend *not* to blow the output > transformer or capacitors if operating into open circuit. > -- > Cheers, > Paul B. > -------------- Vincent Deno Design Engineer Theta Digital Corp. www.thetadigital.com denovj@email.uc.edu _____________ | ____ ____ | |/| | | | | |\| | | |/| |\| | | | | | | | | | | | |_/ | | \_| | | | | | | | |_/ /___\ \_|