dgarretson
Responses from dgarretson
| Capacitor log Mundorf Silver in Oil If space allows, consider building an all film PS with Mundorf polyprop Tubecaps. I've been breaking in several pairs in my Atma preamp-- and they sound great. | |
| Audio Research amps - balanced & non As if these responses are not confusing enough, I'll add my own experiences with transformer coupling. I use a LF-frequency optimized Jensen Isomax between a balanced preamp and a sub plate amp-- which does a great job. On the other hand, the Jens... | |
| Capacitor log Mundorf Silver in Oil I recently heard a demo of Grand Veena presented by the President of Ref 3A at a local audio club. Beautiful treble & midrange-- in those sections I don't think they use any crossover at all. He mentioned that he uses Mundorf-- probably just f... | |
| Audio Research amps - balanced & non Of course there are transformers and there are transformers. Galvanic isolation is a good thing, as is balanced operation--both enabled by coupling transformers. But design & quality vary. | |
| Shakti Stones Do they actuall work guys. I was browsing through(my father's!) MSEE tube textbooks from the early 1950s and came across a statement that a block of ferrous material placed on top of a transformer improves electromagnetic coupling between the windings. This explains the old... | |
| Capacitor log Mundorf Silver in Oil I don't have enough experience with inductors to know which types tend to cause interference. However, the large Alphacore air-core inductors that I'm using as HF analog filters in my CDP, were intially a bear in terms of EMI fireworks. The proble... | |
| Moving Up the ARC Chain: Some Observations John, Pleased to read your positive opinion of PH-2. I've owned one since new that I've gradually modified over the years. At the time of purchase I considered both PH-2 and then-new PH-3, and was impressed by how much better the PH-2 sounded. Muc... | |
| Audio Research amps - balanced & non Will these problems occur with any fully balanced amp or preamp used with an XLR/RCA converter, or only ARC? | |
| Capacitor log Mundorf Silver in Oil To the point raised about EMI generated by large inductors, has anyone tried Ti shielding? | |
| Phantom custom mount on SME slot? I have VPI and Graham TNT armboards cut for SME & Graham 2.X respectively. I believe the 2.X pattern is same as Phantom? It's not practical for me to overlay these armboards right now, but I looked at it awhile back. Overlaying the Graham cut-... | |
| Audio Research amps - balanced & non Marty, You could be right, but the difference between balanced and unbalanced operation is more typically described in terms of loss of gain(typically 6db) and signal-to-noise ratio, due to sacrifice of common mode noise rejection inherent in bala... | |
| tt isolation help This reminds me that I have an old set of Audio Technica spring footers as well. They are better suited than the McMaster-Carr springs to being placed directly under a component. The MC springs work best when mass-loaded by placing a heavy plinth ... | |
| Audio Research amps - balanced & non "The VT-130SE does not have a phase splitter and requires a true balanced input to operate correctly."It will operate "correctly" but not "optimally" in conjunction with a single-ended source. With an SE source and an RCA/XLR adaptor, one phase of... | |
| tt isolation help Trip, The springs are McMaster-Carr P/N 96485K125. They are 1-15/16D x 4L and use .148 diameter wire ground flat at the ends. They compress 23.7lbs/inch, up to a total deflection of 2.88. So a 50lb load compresses each spring about half way do... | |
| 6C33C-B tubes The pair of 6C33C-B tubes providing 75 wpc in my BAT VK75SE are biased 200ma with 210V plate voltage. They begin to degrade sonically at 1200-1500 hrs. I have not needed to replace a tube socket in 10K hours of service. |