01-27-2018, 10:31 PM
Last week I put them on the bench. I bought them around a year ago.
One with the tubes, one without.
To keep the look I need to find the electrolytics, 1" 2x20uF 450V twistlocks. I'd prefer 500V ones.
The existing caps today are all 1-3/4" which won't fit in the existing pattern.
One option is to go to Hayseed Hamfest I was pounted to at Audiokarma. They make custom sizes.
Another is to leave the caps in place and use new ones underneath.
Yet another is to restuff the the cans.
And the last one is to reform the caps. I could go for it, especially when I yanked one and saw the two halves being 24uF and 26uF which is quite good: if successfully reformed, it could work just fine.
But then the cap from the other amp measured at 80uF with each half being 40uF. Which, with somewhat mangled base tells me that 1) the cap had been restuffed in the past, 2) it exceeds the 5U4 tube rating for capacitance though probably would work fine.
The two other caps (same type and value) seem factory soldered so probably original.
Decisions, decisions.
One has black tubular caps, the other has two replaced with orange drops.
Death caps are just that, death caps, need to be changed for Y-rated.
From the sch one could see that the centertap of the output stage is fed with the voltage filtered by the caps right off of the rectifier. No chokes or resistors. Despite that, the amp is very quiet and sounds great, which I had a chance to confirm today at a co-worker's place, same guy on whose behalf I p!aced the ad in "For Sale." He's just retired, as of yesterday, and I came to visit him today, and he had them all warmed up for me. He runs them with G-807 in the pushpulls, instead of 6L6.
His place reminds me of Terry's
only the basement is not as ... busy
Well....I hope the iron is good, I'd sure love to eschew the pleasure of rewinding them transformers, or paying someone to do it for me.
https://www.google.com/url?sa=t&source=w...hIyiCzomc7
One with the tubes, one without.
To keep the look I need to find the electrolytics, 1" 2x20uF 450V twistlocks. I'd prefer 500V ones.
The existing caps today are all 1-3/4" which won't fit in the existing pattern.
One option is to go to Hayseed Hamfest I was pounted to at Audiokarma. They make custom sizes.
Another is to leave the caps in place and use new ones underneath.
Yet another is to restuff the the cans.
And the last one is to reform the caps. I could go for it, especially when I yanked one and saw the two halves being 24uF and 26uF which is quite good: if successfully reformed, it could work just fine.
But then the cap from the other amp measured at 80uF with each half being 40uF. Which, with somewhat mangled base tells me that 1) the cap had been restuffed in the past, 2) it exceeds the 5U4 tube rating for capacitance though probably would work fine.
The two other caps (same type and value) seem factory soldered so probably original.
Decisions, decisions.
One has black tubular caps, the other has two replaced with orange drops.
Death caps are just that, death caps, need to be changed for Y-rated.
From the sch one could see that the centertap of the output stage is fed with the voltage filtered by the caps right off of the rectifier. No chokes or resistors. Despite that, the amp is very quiet and sounds great, which I had a chance to confirm today at a co-worker's place, same guy on whose behalf I p!aced the ad in "For Sale." He's just retired, as of yesterday, and I came to visit him today, and he had them all warmed up for me. He runs them with G-807 in the pushpulls, instead of 6L6.
His place reminds me of Terry's
only the basement is not as ... busy Well....I hope the iron is good, I'd sure love to eschew the pleasure of rewinding them transformers, or paying someone to do it for me.
https://www.google.com/url?sa=t&source=w...hIyiCzomc7
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
