Lots of comments on this already, but I must say I really love this crazy idea! Unfortunately it is completely unreasonable. As I have done some semi-pro audio work at gigs as a volunteer, I'd prefer a 2x1500W MOSFET amplifier over this kind of monster anytime, for obvious reasons. They are very much cheaper, lighter and therefore easier to carry around, and work just as well as a PA because the audience don't care if it is tubes or solid state.. basically they just want lots of low bass frequencies and somewhat decent sound quality that any (properly designed) el-cheapo SS amp can do. I would rather put some nice tube preamp before the poweramp, although I think even that is completely unnecessary.
If you still want to make a very expensive and difficult experiment, forget SE, class A and OTL stuff. Just do a PP AB2 amp with some nice big transmitter tubes and custom wound transformers, that should be doable. Although a few kilovolts of B+ doesn't sound safe to me, if that doesn't scare you off it would still weigh a ton and cost a fortune to build.
Edit: by the way, build a guitar or bass amp for your musician friend or a small hi-fi amp for home use, because you definitely need to complete an easier project first in any case.
If you still want to make a very expensive and difficult experiment, forget SE, class A and OTL stuff. Just do a PP AB2 amp with some nice big transmitter tubes and custom wound transformers, that should be doable. Although a few kilovolts of B+ doesn't sound safe to me, if that doesn't scare you off it would still weigh a ton and cost a fortune to build.
Edit: by the way, build a guitar or bass amp for your musician friend or a small hi-fi amp for home use, because you definitely need to complete an easier project first in any case.
tubelab.com said:
IMD caused by mixing of any harmonic is certainly dissonant.
The 5th harmonic by itself is NOT dissonant. Doesn't matter a
simplified Pythagorean 12 note system doesn't assign any
letter for it. Its still a legit harmonic note, and not dissonant.
For that matter: A circle of 2nd order harmonics closes upon
128 in 8 "Octaves", and a circle of 3/2 order harmonics closes
upon 129.25 in 12 "Fifths". The numbers 128 and 129.25 are
not the same, and never will be. Due to the accumulation of
this error, a Diatonic Fifth several even tempered octaves
away, is never as pleasant as the one closest.
The ear and mind hears fractions and harmonics, not logs.
Simple fractional harmonics are always harmonious. Logs
might accidently fall near a harmonic (7 White Keys), but
others (5 black keys) don't. There are other systems with
better ratios of his to misses for any given root.
If you want to experiment with all the odd order harmonics
of a pure tone, simply clip voltage into a square wave. This
isn't dissonant at all. Until you put two tones thru at once.
If you want to experiment with all the even order harmonics
of a pure tone, simply clip slew rate into a triangle wave. This
isn't dissonant either. Until you put two tones thru at once.
Build a smart amp that adds or subtracts short wavelets of
low order harmonics related to the root to evade a clipping
peak. If you want the same results as soft clipping without
the associated IMD. You DSP guys listening?
Check these beasts out! KRT T-1610
Perfect for SE class A1 useage too mwuhaha! Bit expensive though...
Perfect for SE class A1 useage too mwuhaha! Bit expensive though...
I've been away from this topic for some time, but I am still collecting bits and pieces to build one of these.
http://www.alumrocktech.com/drawings/schematic-1bit.shtml
Does anyone know if alumrock ever sold one?
http://www.alumrocktech.com/drawings/schematic-1bit.shtml
Does anyone know if alumrock ever sold one?
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