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here is a 2nd for thd hotplates-i'm a stickler for tube tone detail(hard to tell,i know) and when i gets vintagee and pull out my fender '65 blackface dual showman, take the spkr load outa that to thd and go into the power side of redknob fender twin or showman-or peavey deltablues-or yes a jc120 i get the best possible leofender tube tone source bein powered by some heavee duty modern day amps. i dont hear no stinking degredation-if i did it wouldnt fly. the thds have a light bulb inside that reacts to the load-the more its takin the brighter it gets-cool to watch and play.they got spkr outs and line out.i've had powerbrakes,powersoaks... and as kim says you need sompin that *reacts*(duh!). s > actually the better quality loads use a reactive impedance to emulate the > reactive properties of speakers. The crappy ones use a purely resistive > load, which would not sound as good for the reasons you mentioned. > > I was looking into this a few years ago to get a line out of my >simulclass > 2:90, as well as be able to run the tubes into distortion without > shattering the walls of my building. I never got around to actually >getting > one, but at the time I was favoring the THD hotplates. They have a >variety > of loads for different impedance power amp outs. There may be other >options > now, I don't know. > > kim > > > At 06:26 PM 8/1/2002, Mark Sottilaro wrote: >> The problem with what you're proposing is that part of what makes a >tube amp >> "warm" is the interaction with the load (speaker) and the tube amplifier >> stage. The thing about a speaker is it's impedance rating is not >fixed. It >> actually changes based on the frequency it's trying to reproduce and >other >> factors. Anyway, the interplay between how the speaker effects the amp >is >> what >> it's all about. OK, well what some of it's about. Transistors do not >behave >> in this way. >> >> Mark Sottilaro >> >> Doug Cox wrote: >> >>> Yes, I know. However, if you'll notice the proposed signal path I >>> mentioned, it ends with two JC-120s, guitar amps with 12" speakers. > > ______________________________________________________________________ > Kim Flint | Looper's Delight > kflint@loopers-delight.com | http://www.loopers-delight.com >