Leaderboard

I call it Three Rib-Eye Pie. In truth, I just seasoned them this way and then grilled them. I was hungry and had people waiting so I didn't take after pics. Tasty, though.

Hard to choose between my speakers or the amp, but I remain pretty confident 2.5 years later that the M22 is the best piece of gear I've ever owned.

Thanks gyus. Cheers *Loins of cod, blood sausage, chorizo, peppers, onion olives and a bed potatoes :-)

power jumper block cleaned of all the epoxy j1,j3,j4 for 100v remove all others j2 j3 j5 for 120v remove all others j5,j6 for 240v remove all others and servo board pictures, unnecessarily complex tube rollers are going to have a lot of trouble with this, the servo has a pretty limited range, and the Russian similar's definitely will not work

Thanks for all the great info. in the previous comments. I just purchased an M-22 a short while ago and did a fairly extensive rebuild myself. I replaced all the Electrolytic Caps and burnished the contacts on all the relays. During the process I accidentally popped/shorted one of the output transistors and had to source a replacement. Once I got the replacement, I re-seated all the main transistors and added new thermal compound and adjusted the idle current and output. The power section of one of the boards gets quite hot so I replaced the Diodes and Ceramic caps there leaving additional space for air flow. Lastly, I added larger rubber mounting feet for air flow and cable routing.

Poke salad Tofu and Karaage

Kevin: did you even listen to it before you took it apart?

I never had troubles with the HV900's, and haven't had any that blew, so the following is based on what I've found useful troubleshooting/checking the regular Golden Reference HV. Often it can be helpful to work at lower voltages when trouble shooting. Paralleling the high resistor (is it 2x 450kohm in the HV900?) in the probe string to get the circuit in action at a lower output DC. If regulation doesn't work for some reason and things go bad it usually isn't really bad. Parallel the R8(2x 450k) with one ~100k (one across both) will provide some ~100VDC. Initial check: The CCS's Use a lab supply at some ~15-20V, through a DMM at mA: put the (+) at the drain (middle leg) of the 10m90, and the (-) at the bottom of the CSS where R2(100) and R1(4k5) meets ...you should get ~2mA ....if you see much more, try replace the DN2540. Do the same at the other CSS: (+) to drain (middle leg) at the 10m90, and (-) at the bottom (pin 6 at the voltage reference) ...you should get ~1.3mA ...if not the 10m90 is probably damaged. Check the current limiting CSS you added (your drawing) the same way (Kevin suggested 50mA for this) When powering up the supply, hold the variac when you reach some ~40-50VDC output, and check: the pin6 of lt1021 against "ground" (pin4) ....you should see 10V ...if not, the lt1021 has probably gone south Before raising the VARIAC further: Attach a DMM across the 2k at the bottom of the cascoded CSS ... you should see ~0V (when at ~50VDC output) and only before regulation kicks in, the voltage jumps to some ~4V; it happens just before you reach the desired output voltage Attach a DMM across the 3k at the source leg of the output CSS (right most leg) ...should be some steady ~4V

Roux for gumbo

I would regret selling mine if it hadn't gone to such a good home.

And maybe move the speakers a few feet away from the back wall too if possible.

Brent advised to share this here. Any interest?

that doesn't mean it's not funny to point it out every time

It will be aeons before I get to demo these......

90% of what I've been listening to lately is this YouTube guy who posts whole albums, Stoned Meadow of Doom. Just subscribe, and listen when you have bandwidth. Here's a latest favourite:

Meanwhile...This fucking RAWKS. Right up there with Leprous, IMHO.

Birthdays are for celebratin'!

Happy Birthday Mike!

here you go, a whole bunch of resistors are the wrong values, when I have time Power supplies are 350v t8000schem.PDF

next to the transformer is 7815,7915 which makes +/-15 to the slot and also the servo board filaments are DC HV is unregulated Cap,100 ohm resistor,Cap servo pretty much identical to the T2 servo the 15k resistors are something else

Finally got my stat cherry properly popped. Previously listened to a SR-202 from that small Stax amp and it didn't do much for me. Lambda Nova from SRM-1/MK2 sounds really good and bass is actually there.