Dual-500 king of the Castle
- Thread starter grapplesaw
- Start date
I had a really good phone conversation with grapplesaw the other day. I forgot he was in Vancouver, British Columbia. I told him about my only visit to Vancouver in the 1980's and a side trip to drive-by the home of Ann and Nancy Wilson of Heart in Tsawwassen, BC.
We talked about the venerable D500 and grounding issues, wire routing techniques, and general Phase Linear trivia.
What a great guy, and smart too!
We talked about the venerable D500 and grounding issues, wire routing techniques, and general Phase Linear trivia.
What a great guy, and smart too!
- Joined
- Jan 14, 2011
- Messages
- 74,217
- Location
- Gillette, Wyo.
- Tagline
- Halfbiass...Electron Herder and Backass Woof
Glen is very generous with his time and knowledge, he just helped me finish a little project. He sent me some parts to upgrade the D500 and was concerned that I didn’t have a way to safely discharge those monster capacitors, so he sent some parts and walked me through building a discharge box. It worked perfectly but after seeing a picture of his DBT, Capacitor discharge combo, I felt like I needed to up my game.
- Joined
- Jan 14, 2011
- Messages
- 74,217
- Location
- Gillette, Wyo.
- Tagline
- Halfbiass...Electron Herder and Backass Woof
I was thinking the same thing so I found this
“If we look at the basics, a bridge rectifier converts pure ac to pulsating dc with the use of 4 diodes or SCR's . That means a pair of diodes will act as a short circuit path to the negative half of the cycle and will allow us to obtain or draw the negative half as output.
Now , if we shift to dc, we shall give utmost consideration to that fact that pure dc is neither pulsating nor sinusoidal. So whatever input we apply, with whatever polarity that fancies us, our output will be just the same as input (some voltage drop is definitely there due to diodes or SCR's ).”
“If we look at the basics, a bridge rectifier converts pure ac to pulsating dc with the use of 4 diodes or SCR's . That means a pair of diodes will act as a short circuit path to the negative half of the cycle and will allow us to obtain or draw the negative half as output.
Now , if we shift to dc, we shall give utmost consideration to that fact that pure dc is neither pulsating nor sinusoidal. So whatever input we apply, with whatever polarity that fancies us, our output will be just the same as input (some voltage drop is definitely there due to diodes or SCR's ).”
I learn best “the hard way” so I say go for it.
Look at that phono pre I built. Never stuffed a board prior as that thing smokes a LOT of high dollar preamps.
Good news: it may be available commercially soon.
Bad news: it won’t be from my company.
The designer (Wyn Palmer) was approached and has been working on prototypes for a “well known” company, which has not been disclosed yet.
It was directly compared to a $10,000 Pass Labs phono pre and preferred by a wide margin.
Look at that phono pre I built. Never stuffed a board prior as that thing smokes a LOT of high dollar preamps.
Good news: it may be available commercially soon.
Bad news: it won’t be from my company.
The designer (Wyn Palmer) was approached and has been working on prototypes for a “well known” company, which has not been disclosed yet.
It was directly compared to a $10,000 Pass Labs phono pre and preferred by a wide margin.