I am trying my Dynaco FM3, I bought it from ebay.com.I am using a transformer to get 120v from 220v.The transformer gets hot,it´s not burning hot I can hold my hand on it,is this okay.But when I hold my hand on the tuner I can feel the 50Hz its shaking.Is this normal?
The soud is fine just a little hum when I turn the volume down.
Will more uf fix the hum?
The soud is fine just a little hum when I turn the volume down.
Will more uf fix the hum?
Some North American 115 V. equipment contains power trafos suited only to 60 Hz. power. Apparantly, that's the case with the FM3. Under no circumstances, add capacitance in the PSU immediately after the rectifier. If the filter is CLC, you can add capacitance in the 2nd position (after the choke). BTW, have you already replaced the PSU 'lytics? If not, you should.
I have an updated (modded) FM-3 and the tranny vibrates like crazy. It did when stock and does now. I put a VPI magic brick on the case right over the transformer and it settled down. I've used one other sample and it did the same thing.
The VPI brick made a huge sonic difference, btw. Sadly, they're no longer available...
I'd love to find a toroid that would replace that vibrating POS.
Van Alstine has a really good article online about the FM-3:
http://www.avahifi.com/root/audio_basics/1990-11_fm3_keep_working.htm
The VPI brick made a huge sonic difference, btw. Sadly, they're no longer available...
I'd love to find a toroid that would replace that vibrating POS.
Van Alstine has a really good article online about the FM-3:
http://www.avahifi.com/root/audio_basics/1990-11_fm3_keep_working.htm
Hi,
A wooden case about the size of two brick halves stacked on top of each other.
The case is filled with steel laminates, about 6 kgs worth of them and this is meant to be put on top of OPTs, powerxfmrs etc to soak up stray EMF.
IOW, not the kind of thing you want to drop on someone's foot...
The sheer weight of the thing naturally tends to reduce mechanical vibrations from xfmrs as well although I think that problem is best solved at the source itself.
Sure.
Cheers,
A wooden case about the size of two brick halves stacked on top of each other.
The case is filled with steel laminates, about 6 kgs worth of them and this is meant to be put on top of OPTs, powerxfmrs etc to soak up stray EMF.
IOW, not the kind of thing you want to drop on someone's foot...
The sheer weight of the thing naturally tends to reduce mechanical vibrations from xfmrs as well although I think that problem is best solved at the source itself.
Sure.
Cheers,
Actually, I think it affects the magnetic field of the power transformer, becuase it's not directly on the transformer itself, it's on the chassis - and it cuts the vibration of the power transformer even when I'm holding it just *above* the chassis. You can feel the reduction of vibration in the chassis and you can hear it as well.
I agree that the best solution would be to replace the transformer with a better unit, however.
I agree that the best solution would be to replace the transformer with a better unit, however.
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