almarg
Responses from almarg
| Ugraditus is calling....again. Phono stage? Hi Uberwaltz,Atmasphere (Ralph) has explained in some past threads that for a low output moving coil cartridge optimal loading is mainly dependent on the phono stage, and not on the cartridge. And in particular it is mainly dependent on effects on... | |
| Ugraditus is calling....again. Phono stage? Now one thing I do not know is what occurs if that ratio is sky high, say 500 to 1 or so? No problemo, Uberwaltz :-)It would be extremely rare for a problem to result from having too high a ratio, and in fact if that were occur it would most lik... | |
| Cryongenically treated in-wall AC power wire For further explanation of the hazard that would be created by installing a dedicated ground rod for the audio system see page 29 of the following paper, which was written by a renowned expert on such matters:https://centralindianaaes.files.wordpr... | |
| Subwoofer for Ayre AX-7e? @taww, thanks for the good info. Between the commonality of circuit ground and chassis ground and your finding that the RCA inputs are apparently treated as if they were balanced the design is certainly different than what I was envisioning. So, y... | |
| Ugraditus is calling....again. Phono stage? Isn’t the Gold Note output impedance very similar to the Herron’s? First, as I mentioned earlier, while the manual for the Gold Note states 500 ohms, two other references provided at its website indicate 50 ohms.But in any event, and assuming the ... | |
| Subwoofer for Ayre AX-7e? Taww 4-2-2018... This wiring setup works, HOWEVER, if you turn off the Ayre, you will get a fairly loud hum from the REL. This is because the Ayre outputs are floating and not referenced to ground at all. I haven’t figured out a way to get around ... | |
| Would you change your amp selection knowing...? Unsound, thank you kindly for the gracious response. Cycles2, separating the two conductors as you describe will result in capacitance being very low, although not zero. However, it will cause inductance to be considerably higher than if the con... | |
| Subwoofer for Ayre AX-7e? I also am using the AX-7e in my office with a pair of Zu Omen Bookshelf speakers and HSU VTF-1 subs.The Ayre handles them at line level with no problem. Hi Bob,Doesn’t that mean you have to adjust the volume control on the sub whenever you change ... | |
| Subwoofer for Ayre AX-7e? In addition to the fact that the AX-7e doesn’t provide volume-controlled outputs from its preamp section, there are significant potential issues if its speaker-level outputs are connected to a sub. Note the following statement in its manual:The Ay... | |
| Would you change your amp selection knowing...? @unsound I found a link to the paper from which the excerpt shown at the link you provided was taken:http://sound.whsites.net/cable-z.htmMy conclusion reading all of this is that I wouldn’t worry about his allegation that the resistor value chosen... | |
| Ugraditus is calling....again. Phono stage? John (Jmcgrogan2), thanks very much for the nice words. Regarding the Gold Note PH-10, as you mentioned it isn’t clear if the specified output impedance pertains to the balanced outputs or the unbalanced outputs or both. In addition, the website d... | |
| Ugraditus is calling....again. Phono stage? Hi Uberwaltz,On page 13 (pdf page 8) of the manual for the VTPH-2A, near the upper right-hand corner, the following statement appears:We recommend that the VTPH-2A be used with a line stage having an input impedance of 50,000 ohms or higher for op... | |
| Ugraditus is calling....again. Phono stage? Hi Uberwaltz,John (Jmcgrogan2) has listed three outstanding phono stages. However while I have been delighted with my Herron VTPH-2, which like several other members here I use in conjunction with an ~$1K Audio Technica AT-ART9 cartridge, I’m high... | |
| Would you change your amp selection knowing...? Hi Ian,Thanks for the clarifications. While Zo (denoting characteristic impedance) = ( L / C )^0.5 is an equation that is widely used in various EE applications, I don’t recall ever seeing a **simple** derivation of it. The Wikipedia writeup I ref... | |
| Would you change your amp selection knowing...? @iealesHi Ian,I’m afraid I have to question or disagree with several things in your analysis:1)I’ll start with the least significant of the issues that I see. What length are you assuming in your calculation that resulted in 0.05 ohms at 1 kHz? Pl... |