SF Assemblage ST-40 tube amp?

Harv, thanks for your input. Um, I'm afraid we're ALL on the lunatic fringe, being in this hobby in the first place (whether tube-heads, solid state-heads, digi-heads, styli-heads, whatever). So, I'm not dismissing you! I agree that a simpler circuit can usually be better (and point-to-point, rather than circuit boards). But, I'm really looking for something in at least the 30 to 40 wpc area, since I'm used to 500 wpc (use most of it only on the Maggies, though). I'm hoping to churn out a quick DIY speaker on the cheap that uses a bunch of low cost series-parallel cones, that should be easy to drive, and very efficient. If it turns out to be more efficient than I'm thinking, then I can consider the "few watts per channel" types................However, it will feature 2 Vifa dome tweeters in parallel, so the impedance will be dropping to like 2.5 ohms in the low treble (unless I can somehow compensate for it in the crossover). WILL THIS KILL A LOW POWERED TUBE AMP? The impedance below the treble will be nominally around 6 ohms, so that should be ideal for all but maybe extraordinarily weak and unstable amplifiers.

Carl, you are right about the severe impedence dip being inappropriate for a low powered tube amp. Speaking of Maggies, here is an interesting story about my first tube amp: For years I enjoyed the sound of my MGIIIA's with a pair of Adcom 565 300 watt per channel mono amps. One day I answered a newspaper ad for a reel to reel tape recorder. The tape deck was junk, but the guy had something else that caught my eye. This was a set of Fisher components that he had cannibalized from a huge console stereo. I bought the tuner, preamp, and two mono amps for $100.00! So, I get home and try the amps out first on some old Boston A60 spkrs. that I use in my Video/TV system. The sound was quite good, and it surprised me how loud these little amps would play. They use a pair of 6BQ5 output tubes and probably put out only 15-20 watts. I couldn't resist the temptation to try them on the Maggies, thinking that I could always turn them off quickly if there were any signs of strain, or FIRE! But, you know what? These little amps were just blowing away the big solid state Adcoms! The timbre, the clarity, the sense that the musicians were in the room, even the bass was more natural. All of a sudden the music just made sense. I walked around for weeks with a secret inner smile like I had had some born again religeous experience. I don't know how or why these amps work so well, but I can tell you that I have since spent thousands to try and find something better only to come back to the Fishers again and again.

Interesting story, Harv.

I found this too with the Fishers. One of my friends has a set of Soundlab electrostatics driven by a refurbished Fisher tube receiver. Excellent sound. Not powerful, but very detailed and airy.

HAS NO ONE ELSE HEARD THE ASSEMBLAGE ST-40????