LOL yup.I still have my original 4102. It’s the 100 watt 2x12 combo. It’s still probably my all time favorite amp. I bought it new. But it’s pretty much un-useable for my gigs these days. I got to use it for one gig last year. Big outdoor show. Big enough that I could tell the stage crew and FOH guy to just deal with it. And the steel player was throwing eye daggers at me the whole show. It was glorious. But yeah, it’s not a club amp.
Truthfully I don’t even wanna carry it anymore. It’s 10lbs heavier than a TRRI. It’s just a beast, and not necessary for todays stages and PA’s. But holy crap, I cannot tell a lie, it’s just so much fun once in a while.
Yup.keep the 900
I'm mainly a home noodler on guitar.
Well, while you're recovering, why not set aside a piggybank fund for an eventual Origin? The 20-watt combo has been spotted in the wild for under $500, and it's a great sounding little amp, especially with a Greenback 10 swapped in. And the 50 head can be had for the same money, a little stiffer than the 20 but a pretty great amp. Not either / or but both / and!
Another road one can take for under 1,000 as a home player:
Definitely be sure you like the Origin's sound. They are very different beasts. I ever never played thru a JCM that I liked at all. I own two Origin combos (20C and 50C) and I love them. I'll probly end up buying a 20H and 5C as well.
I suggest you go to the Dr. Tube website (below) and review the JCM900 schematics of the various versions. There were two ECC83 tubes in the pre-amp. It was not a tubeless pre-amp unless that change has come about in much more recent versions.I traded into a 900 dual reverb 50 watt head last year, and am on the fence about it. I knew what I was getting into when I got it, tubeless front end and all.
I suggest you go to the Dt. Tube website (below) and review the JCM900 schematics of the various versions. There were two ECC83 tubes in the pre-amp. It was not a tubeless pre-amp unless that change has come about in much more recent versions.
After some thought about it I think the issue at the time was that, along with the ECC83 tubes in the JCM900 pre-amp, there were I.C's and diodes in the signal path. That REALLY put off many Marshall aficianados ...
I had a JCM900 HGDR , Model 4501 50W combo years ago..I never did bond with it, and sold it . The clean tone was not that good, and the distortion buzzy....could very well have been the combo format. The Fender Blues Jr. I bought new in 1997 had a better clean tone.
If not for signal amplification, please explain what function you think the V1a, V1b, V2a, and V2b stages perform in the pre-amp section of a JCM900.Yeah, I've gone over the schematics a lot. It's a convoluted mess. But it's more or less clear that
a bulkover half of the tube triodes being used in the preamp (before PI) are not for amplification.
Give it up, you are totally off base and need to do some homework ....hint: the ECC83 stages labeled as V1a/b and V2a/b in the JCM900 perform the same functions as they did in the JCM800 and it hasn't anything to do with reverb recovery.EDIT: Nope. Scratch that again. V1 is one amplification stage, and a cathode follower. It's basically like Marshall took out the first tube and replaced it with split channels of various op-amps, diodes, and LEDs for preamp and clipping. V2A is a loop buffer, and V2B is either amplification or part of reverb recovery. That's unclear to me, particularly since the next circuit is Opamps for the masters(?). What a mess LOL.
Give it up, you are totally off base and need to do some homework ....hint: the ECC83 stages labeled as V1a/b and V2a/b in the JCM900 perform the same functions as they did in the JCM800 and it hasn't anything to do with reverb recovery.
But the point made is that you are totally incorrect to say that the JCM900 amplifiers have a "tubeless front end", i.e pre-amp. I could care less about the remainder of your OP.