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Will, your work is very impressive! You chose an excellent amp to restore. The Yamaha amps of this vintage were extremely well built and very conservatively rated. When I scoped mine back in the day it had a perfect square wave and put out about 15% more power than it's rating before clipping...

+1 People shouldn't let their idol worship of legendary brands get in the way. The quality, or lack thereof, of these new tubes will soon be known once people start using them. OTH I guess one upside of having low expectations based on warm, fuzzy recollections of the good ol' days is...

As always, thanks for the encouragement! Do you mean you actually are running the original 1950s filter caps?! If so, that's impressive! Do you know whether they are Mallory, Pyramid or Sangamo? If you're not running your 260s, what have you been listening to? The JJ multi-section caps I...

So, I measured the voltage at C1 section A that goes to pin 8 on V5&6. About 10 seconds after I turn the power on I read ~568V and it then comes down to around 512V when things stabilize. Who knows how long my 500V JJs will last at those voltages? The readings on section B is about the same...

Thanks for the replies! The Fairchild 260 was designed for 117V. My house voltage is now 120-121V. I'm pretty sure this accounts for some of the high readings. Batt, you have an interesting point about the meter. I'm using a Fluke DVM which is way more accurate than was required in the '50s...

Finally, I've started putting my second 260 together! I recently painted the transformers, drilled out the rivets for the old sockets, installed NOS sockets using binder screws/nuts and replaced the heater wiring. Before beginning to solder components, I decided to take some voltage readings...

+1000. It's basically converting AC to DC. Other than that the only difference is the voltage output which can vary depending on the specific tube. Rectifiers aren't in the signal path. Differences in voltage can cause audible differences such as "sag", but I doubt you'll hear what was...

They are 3/4" measuring from the base to the shoulder as you've measured in your photo.

In the 1970s someone hot wired my '65 VW bug. As the officer was taking a police report, another officer radioed saying he'd found the car a block and a half away. When we arrived we found that the thief had left it in the middle of the street when it ran out of gas. He'd cut himself on sheet...

Awesome score!!!! I suggest dumping the mat and replacing with cork or a carbon fiber anti static mat. On mine, I had a fellow audiofile in the bay area remove the pop-up 45 adaptor and fill the opening with a metal plug. He then machined the platter so it is flat from edge to spindle. It...

I must be psychic or something to have stumbled back at the same time this thread started! On one hand, it is great seeing Fairchild receiving the attention it deserves. On the other hand, as more and more audiophiles become aware of the quality and performance of Fairchild electronics, my...

jimtone, don't give up! As impossible as it seems, something could pop up when you least expect it. I first learned about Fairchild amps 6 or 7 years ago and stumbled onto my pair of 260s needing complete restoration. Although the guy I got them from assured me that I could do it myself, I...

Hey Radioactive, long time no see! A job change took over my life a few years ago, so all of my free time pretty much vanished. Now I'm making time and it's good to be back on line with AK! When I picked up my 260 from the guy who rebuilt it, we put it on the scope and it cranked out 60...

I was thinking of calling in sick to work today to join the ticker tape parade festivities. It would be my luck that I'd be seen on TV if I did, so I decided against it. I'm sure it will be a blast! :beerchug: During the final game the camera panned the Giants fans and zoomed in on someone we...

I guess "Lights Out Lee" couldn't find the switch. :D

They actually taste better if they are allowed to off gas for a couple of days.

Expertly done! They MESSED with Texas big time!!!! :banana::banana::banana::banana::banana::banana:

That is the V-M Model 817. It's included in a brochure that I got from my neighbor. It's yours if you want it. Just send me a PM.

If it sounds fine now, don't loose sleep over it.

Welcome to AK! I have a pair of Rosewood L1590 Series 2. I paid somewhere between 500 and 750, I can't remember. While I slightly preferred my old L1290s, this speaker offers unbelievable sound quality for the price. You should contact the owner to see if you can audition them before bidding...

Wow, I admire people like you who understand the nuts and bolts, er, saturation and phase shifts and complex workings of tube equipment! My brain just doesn't work that way. :D

iPod mini needs new battery I'm hoping to hear from onepixel or anyone else who has replaced their own battery. Mine won't hold a charge for longer than two days so it's time to replace it. I'm looking for recommendations on suppliers. While I'm in there, I plan to replace the micro-drive...

Congrats! I miss my MMGs. The right tube amp will make your MG-1 sound wonderful. However, at only 86dB, this isn't a very efficient speaker. You'll need a beefy tube amp with a 4 ohm tap to make it really sing. I'm thinking at least 50 watts. Since you can bi-wire this speaker it...

I coined the term "audio suggestion" back in the early '80s when a friend and I were comparing different components blind. :D

+1 :thmbsp: