solid state vs tubes

I was going to tell an inside story about the Manley TNT when this thread started as a another tube/SS debate but that was not the OP's intent. Not supposed to know that anyhow.

Don't know if the tube amps I've known have been rolled off on upper frequencies or the better SS amps have been too "hot" but I tend toward the former. Consider that the higher frequency harshness that you're sensing may not be frequency related as much as time related, as if that helps. Different animal, different habitat.

As far as the Plinius, it does have the switch to run in A/B when not used or for casual listening. The "laid-back" soundstage might be a big adjustment from vintage tubes or, for that matter, vintage SS. Guaranteed it's a better match for the 1.6's than the old VTL 120.

MrTennis,
As a long time Magnepan guy, part of your issue with the 1.6s may be more setup than the speaker itself.
At one point I was tweaking the toe every couple days. Bad image here or too bright or whatever.
Finally, in reading around, I found out that Magnepan SWAPPED SIDES on me in the mid-90s. Yep, you are probably listening to the mylar side, with the connection plate and fuse in BACK where you can't see it. You may even have the tweeters out. I think that's what the 'book' calls for. My MG-1s were mylar back and it never occurred to me that Magnepan changed that......My 1.6s now remind me of my old speakers, but MORE in every way....if that makes sense?
Well, ForGet It.
Just rotate your panels IN PLACE. Put the pole piece facing you, the listener and the tweeters 'in'.
My brightness disappeared due to my now crossing the speakers axis behind my sitting position. I couldn't do this before without some funny (not funny, really) image artifacts or even a 'hole' in the center. Now, I have a much better image, no comb effects, smoother HF response, the resistors which I had on the table threatening to install are now put away and the sweet spot is MUCH wider.

Try it and get back to me.....pm if ya' gotta.

when i use my vtl amp on the magggies the treble and upper mids are well behaved. so, i conclude that it may be clipping issues or the solid state transistoritis in the treble when mated with panels, when playing loud, for me over 85 db is loud.

I think you are hearing the way the impedance of the speakers is acting when being driven by tube amplification
vs solid state power;it just so happens you are hearing it in the treble frequency range;its all part of matching the proper amps with the speakers in my opinion.

MrT,

What SS amp specifically produces the treble issues?

I'm seeing that tube amps and maggies are not a bad combo these days, especially with a sub thrown in the mix if desired. My favorite dealer runs this combo these days in his top system room. Maggies are not inherently "muscle" speakers in regards to the low end, not requiring high damping or high current to be driven well from my experience (though they do need SS power to go loud), so I think more moderate powered tube amps can do them well.

I wish I still had my old Mg1Cs. I'd like to hear how they sound off my current Bel Canto Icepower amps. I ran them off a Carver m4.0t (a 360w/ch Ss amp voiced to sound like carver's Silver Seven tube amps) very nicely for years. No top-end fatigue there. The more you listened, the more you wanted to listen, as it should be with Maggies (no fatigue). Maybe that answers the question about SS amps sounding like tube amps, at least in regards to the top end and no fatigue, at least with older Maggies? I did prefer the maggies running with a separate powered sub however in order to get a more muscular low end. My current OHM 5s replaced the Maggies (no sub needed with these).