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One irritating little amp - VM 557
#9

The VM amps were kinda weird, but as you say, they did work well until they didn't. I just got a bag full of new tube sockets and think on this amp, my best bet is to rip it out and redo start to finish and see what I get. The sockets are def bad, and could be some flaky carbon resistors, and yeah, those sand things gotta go. rest of the caps are discs. I know what you mean about those maggies. I have the guts from a couple Windsors? that are pretty cool. Had one since a kid from an old TV guy with the quad 6V6s. Found another more recently that was very clean, same tuner but the amp was a little different, still quad 6V6s. These are in a straight line where my older one are in a square. Electromagnetic speakers on both.

If I could find the place called "Somewhere", I could find "Anything" Icon_confused

Tim

Jesus cried out and said, "Whoever believes in me , believes not in me but in him who sent me" John 12:44


Messages In This Thread
One irritating little amp - VM 557 - by TV MAN - 03-05-2025, 08:57 PM
RE: One irritating little amp - VM 557 - by David - 03-05-2025, 09:39 PM
RE: One irritating little amp - VM 557 - by morzh - 03-05-2025, 09:51 PM
RE: One irritating little amp - VM 557 - by Arran - 03-06-2025, 03:45 AM
RE: One irritating little amp - VM 557 - by TV MAN - 8 hours ago



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Recent Posts
Another amp build - here I go again!
How many amps a man can have? I say, as many as the space can hold.morzh — 10:01 AM
Value of capacitor
>>>It currently has an .005 1000 volt electrolytic that is at least 40 years old. That needs to go. There i...morzh — 10:00 AM
One irritating little amp - VM 557
The VM amps were kinda weird, but as you say, they did work well until they didn't. I just got a bag full of new tube so...TV MAN — 08:56 AM
Another amp build - here I go again!
I have a pair of Mk3 Dynas and they always sounded great with plenty of punch. 6550 is the same as a KT88 except usually...TV MAN — 08:45 AM
philco predicta
As Mr. Fix says, this is a live chassis so without an isolation transformer, it can be dangerous to work on. There's goo...TV MAN — 08:33 AM
Value of capacitor
If this helps you sort it out just remember 10,000 mmfd or pf = .01 mfd. So 5,000mmfd = .005 mfd.Radioroslyn — 04:23 PM
Value of capacitor
OP here- the parts list calls for an .005 1000 volt mica. It currently has an .005 1000 volt electrolytic that is at lea...bridkarl — 02:09 PM
Value of capacitor
Maybe it's one of those paper caps that is wrapped in a mica-lookiing case.RodB — 01:51 PM
Value of capacitor
I also was wondering what the post about using polarized caps had to do with the subject? The cap is 5nF, does not exis...morzh — 10:22 AM
Value of capacitor
The OP stated that there is an electrolytic in the circuit in place of the coupling cap and wondered what effect it has....RodB — 09:53 AM

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