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In Reply to: RE: Importance of Voltage Regulation posted by Schlep on January 17, 2021 at 20:25:41
getting as high as 126VAC and as Low as 115VAC I bought a Furman P-1800 AR voltage regulator/ power conditioner for my front end tube gear and SS gear. I didn't want any issues with the tube gear due to that high of voltage. I put the Tube amp on the Variac and keep it at 117VAC. The Furman has worked out great and glad I got it.
I had a PS Audio P-300 years back and sold it due to being out of work for a while. I wish I still had it. Too much $$$ for new ones from PS Audio.
Follow Ups:
"I had a PS Audio P-300 years back and sold it due to being out of work for a while."
If you used yours fairly often, you probably sold it at a good time! Mine bit the dust around the 20-year mark. I know of others that died too due to age - specifically several of the electrolytic caps bulging and some leaking.
Not a simple fix because (if memory serves me) the entire circuit board assembly has to be removed and that also involves unscrewing several power transistors that are mounted to the chassis / heat sink. Not electronically challenging, just a mechanical pain in the butt, and probably a pain in the butt to realign putting it back together.
but I could do the cap replacement. I would just have realize it would be a long project to do it right. Those things still are commanding some good money for them. My P-300 really never got too warm and barely registered the watts when using my system on it, never got close to 100 watts pull on it. If I remember correctly, the most I saw was around 60 watts on the front panel.That was quite a bit of years out of it. It was like a Class A amp so I new it would need some sort of recapping down the road due to the heat. Jeff at Jeff Sound Values offered me a P-600 and I almost jumped on that deal he offered me but I was out of work at the time and other needs were more important at that time. Now that would have been a beast to repair!
I wonder if PS Audio would even repair/restore them now?
The Furman P1800 AR I have works great and I'm glad I grabbed one. It too a long time to break in to start sounding really nice. At first it was a little on the dull side but after 2 weeks of using it with my system and TV it was sound a lot better. After month of being on 24/7 it was really nice sounding on the audio gear and I could see a difference with the DLP TV I have plugged into it.
One bad thing, when I connected the tube amp to Furman it had a buzz sound coming from it and that was due to the extra current draw. Wasn't real loud but I could notice it if I walk by the Furman. Everything was at 120VAC. So I just put the VTA-120 on the Variac.
Edits: 01/20/21
I think you got your money's worth out of your P300, and you recovered a bit by selling it before it crapped out.I recall finding suitable replacement caps for the P300 via Mouser or DigiKey.
I inquired about having mine repaired but PS Audio wanted something like $600. They did offer $600 in trade-in value toward the purchase of a newer model even though their trade-in policy demands that the trade be in working condition. I didn't take PS up on their offer because even with the trade, the new power regenerators are very expensive - IMHO.
Edits: 01/21/21 01/21/21
PS Audio was going to do, maybe $600 wouldn't be so bad. Did they say what they would do and parts would be replaced in the repair?
I Agree that the new regenerator are very expensive.
I didn't get a line by line quote for the repair. This was an over the phone worse case estimate covering everything that could be bad. The obvious by way of visual inspection just looking down from the top were several bulging caps, some leaking.
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