After consulting with a friend, I went ahead and replaced them with NTE mylar/film capacitors. Might upgrade them somewhere down the line, but it's what I happened to find at the local electronics supply store.
-Adam
Big Dynaco find! (kinda epic)
- Thread starter AdamAnt316
- Start date
After consulting with a friend, I went ahead and replaced them with NTE mylar/film capacitors. Might upgrade them somewhere down the line, but it's what I happened to find at the local electronics supply store.
-Adam
madpioneer
Super Member
A few years back I visited a 3 car garage full of gear that was advertised in the newspaper.
The guy 'Happy' was a musician and while on the road he would frequent all kinds of thrifts, music stores and ended up with tons of equipment.
He had a few of those Dynaco's but his price was not $60 I was not interested and I passed on them. IIRC he was asking in the neighborhood of $200-$300+
Congrats! Great deal swimming with the sharks...
The guy 'Happy' was a musician and while on the road he would frequent all kinds of thrifts, music stores and ended up with tons of equipment.
He had a few of those Dynaco's but his price was not $60 I was not interested and I passed on them. IIRC he was asking in the neighborhood of $200-$300+
Congrats! Great deal swimming with the sharks...
Update:
The ST-35 lives!
Replaced all the green caps with NTE mylars, brought it up slowly on the variac, and it plays nicely with no noticeable hum. One channel might be a bit weaker than the other, but I haven't verified that yet. Anyway, here's a pic:
One thing to note is the "DEPT 940 R-D" tag. There is a good possibility that the ST-35, along with the Mark IIIs, were used in the R&D department at KLH. The seller is the son of someone who worked in their R&D department, and also had a lot of test equipment which all bore asset tags reading "KLH R&D - A Division of Singer".
-Adam
The ST-35 lives!
Replaced all the green caps with NTE mylars, brought it up slowly on the variac, and it plays nicely with no noticeable hum. One channel might be a bit weaker than the other, but I haven't verified that yet. Anyway, here's a pic:
One thing to note is the "DEPT 940 R-D" tag. There is a good possibility that the ST-35, along with the Mark IIIs, were used in the R&D department at KLH. The seller is the son of someone who worked in their R&D department, and also had a lot of test equipment which all bore asset tags reading "KLH R&D - A Division of Singer".
-Adam
Just finished up recapping the older Mark III. Definitely made easier by the fact that it was factory-wired in the same way as mentioned in the assembly manual. Will hopefully be powering it up sometime tonight.
You live at KLH's R&D department? Boy, now I need to find myself a time machine too.
-Adam
Dept 940 is my address, can you kindly return my amps
You live at KLH's R&D department? Boy, now I need to find myself a time machine too.
-Adam
Another update:
The older Mark III lives!
Replaced the molded-paper capacitors on the circuit board, replaced the rectifier and electrolytics in the bias supply, brought it up on the variac, and like the ST-35, it plays nicely with no noticeable hum. Once again, here's a pic, note the lovely coating of dust:
I am considering a setup like that. My current thought is to have the Mark IIIs on lows, and the ST-35 on mids and highs. Not quite sure how everything will balance out, but it should make for an interesting experiment nevertheless. :yes:
-Adam
The older Mark III lives!
Replaced the molded-paper capacitors on the circuit board, replaced the rectifier and electrolytics in the bias supply, brought it up on the variac, and like the ST-35, it plays nicely with no noticeable hum. Once again, here's a pic, note the lovely coating of dust:
I am considering a setup like that. My current thought is to have the Mark IIIs on lows, and the ST-35 on mids and highs. Not quite sure how everything will balance out, but it should make for an interesting experiment nevertheless. :yes:
-Adam
Another update:
The older Mark III lives!
Replaced the molded-paper capacitors on the circuit board, replaced the rectifier and electrolytics in the bias supply, brought it up on the variac, and like the ST-35, it plays nicely with no noticeable hum. Once again, here's a pic, note the lovely coating of dust:
I am considering a setup like that. My current thought is to have the Mark IIIs on lows, and the ST-35 on mids and highs. Not quite sure how everything will balance out, but it should make for an interesting experiment nevertheless. :yes:
-Adam
Now I'm officially green with envy! You do know that once you go bi, there's no turning back!
I'm running a pair of Maggotbox 150 monoblock biamps as my everyday system,using JBL L80T3s by the way. Output is my computers soundcard. Rockin' out in the 21st century!!! With biamps made in 1957!
Good job Adam. I think this one handily beats out your Spec gear score. You must be living right.
Yet another update:
The newer Mark III lives!
Once again, I replaced the molded-paper capacitors on the driver board, as well as the electrolytic capacitors in the bias supply. Didn't have to replace the bias supply rectifier, because Dynaco switched to silicon diodes sometime down the line. Oddly, my ST-70, which was made around the same time as this Mark III, still used a selenium rectifier in the bias supply. Anyway, yet another pic:
I sure hope so.
With any luck, you'll be able to hear these Mark IIIs at Frank's get-together. I'll probably pipe 'em through my AR 2AXes.
-Adam
The newer Mark III lives!
Once again, I replaced the molded-paper capacitors on the driver board, as well as the electrolytic capacitors in the bias supply. Didn't have to replace the bias supply rectifier, because Dynaco switched to silicon diodes sometime down the line. Oddly, my ST-70, which was made around the same time as this Mark III, still used a selenium rectifier in the bias supply. Anyway, yet another pic:
I sure hope so.
With any luck, you'll be able to hear these Mark IIIs at Frank's get-together. I'll probably pipe 'em through my AR 2AXes.-Adam
