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I snatched couple up before Covid, but they are nigh unobtainable nowadays, no one wants to sell them. I've seen only one within the last year. On a side note, I bet Gib$on could make a nice profit if they released a small batch or two of them.

hope I'm not necro-ing. you want to start with the gain control circuit between the V1a and V2a as shown on the Rev F schem. I do not know of a specific schem that shows the differences, but working from memory, there's adding 2.2meg resistor to ground coming right off the coupling cap from the...

please delete this guy's account, thanks

The way the EQ is designed, the slider frequencies are not isolated from each other so adjusting one will affect others to some degree.

yes very simple to mod the loop, it will take a competent tech way more time to remove and reinstall the chassis than it will to complete the actual mod

If that's their official stance I call BS. Wire wrapped around iron, that's all you need. Even if they can't use some specific material, they can create something adequate using modern techniques, even if it's not 100% identical down to the molecule.

If I were to guess, there could be some IP tied to the original transformer designs which doesn't belong to Mesa, and either the owner's price isn't being met, or collaborating companies had some sort of falling out. I can't think of one other component that couldn't be sourced today with...

Myself I like The Tube Store: https://www.thetubestore.com/shop-by-amp/guitar-amp-tube-packages/mesa-boogie-amps/mesa-boogie-triple-rectifier-amp

apparently I posted a response here that belonged on another thread. I don't see a delete option so I can only edit. you can go about your business. move along, move along..

What color code(s) are they?

I remember reading way back when that they were going for a medium-gain rock / blues sound, and it was a complete accident that it caught on for tha brootz. One thing they did was include resistors inline with the cathode bypass caps which reduces gain from the original SLO design. They also...

There is a coupling cap and 2 bright caps in the lead gain circuit feeding into and paralleling the gain pot, I would recommend changing those accordingly if you like the overall freq response of the gain. if you don't change them, it will add more low mids and bass. that isn't a bad thing of...

I would guess that most speakers are conservatively rated in terms of power handling, and with the thousands of Mark V's with 90W speakers, there haven't been widespread issues. I would guess that pushing the power section into distortion caused some other transients that spiked output enough...

I would say $3k would be the low limit, and that is pretty low for any IIC+. I have the same amp and haven't seen one go for less than that since pre-Covid., but if anyone else has links to lower listings, please share. It's harder to put an upper limit since that seems to be a lot less...

No voicing differences I've seen from the various schems I've studied, but the EQ circuit does load down the signal differently and that can have an overall affect on tone / freq response.

10k is way high, I would also check the circuit feeding them power when 'on' if you've already replaced them. They should be in the tens of ohms at most when turned 'on'.

The irony of including a direct comment of a personal nature in that reply. A reply which avoids my gist nonetheless.

It's not a rumor when Mesa's support directly tells you they don't mod amps. This is over email. If you want to say they give conflicting information, that's accurate. But if they are willing to do mods, then they should STOP SAYING OTHERWISE ALREADY.

do you have links to any specific posts or vids where people describe the mods?

I assumed Greens were the coldest based on measurements I made in the past, but now it looks like the ones I measured were very worn out.