bifwynne
Responses from bifwynne
| which tube? Take a look at the thread going about tube amps and electrostats. I just posted a link to an article written by Keith Howard in 2007 which cogently discusses "EPDR" ratings and how EPDR stats can be used to predict how well a particular amp will p... | |
| tube amps and electrostatics George, I did a web search for an article that explains EPDR. I found an article authored by Keith Howard printed in Stereophile (July 2007), here: http://www.stereophile.com/reference/707heavy/index.htmlMr. Howard explains in simple to understand... | |
| tube amps and electrostatics Thanks George. Is it a gross simplification to view EPDR as a "refined" version of impedance which will provide a clue about the load an amp is facing when driving a speaker at various frequencies?? For example, the EPDR of the Wilson Alexis at on... | |
| Solid State to replace Audio Research REF110? Jglpublic, I do not doubt that you experienced these unfortunate problems. I strongly suggest that you call Kal at ARC and share your problems. I believe that ARC will stand behind its products. Let us know how you make out. | |
| Who makes Hi Al, Thanks for the link re the standard simulated speaker load used by JA. I've seen it before. It's a helpful tool which illustrates how an amp's output voltage (??) varies as a function of speaker frequency. My non-tech anecdotal reaction is ... | |
| Solid State to replace Audio Research REF110? Gary (Hifigeek) -- if you catch this thread, would you please weigh in on your anecdotal experiences involving ARC tube amp repairs. | |
| Who makes Thanks again Al. Well ... I'm back from where I started. It seems that one reason, among many others, that my Ref 150 tube amp does a nice job driving my S8s is because the 1040 joule power supply acts "somewhat" like a monster-current SS in its a... | |
| Who makes Thanks Al. So what is JA measuring in the first graph?? Is it volts or watts? | |
| tube amps and electrostatics Thanks George, I read the article that uses the term EPDR. It appears to be a numerical factor that in some way combines and restates a speaker's impedance and phase angle attributes at a specific frequency as some sort of "impedance prime" equiva... | |
| Solid State to replace Audio Research REF110? I am a loyal ARC tube gear owner. This includes 4 and a half pre/linestages and 3 amps. Other than an occasional blown bias resister, never experienced the kind of problems described above. Admittedly, I always paired an ARC pre/linestage with the... | |
| Who makes Al, Ralph and Bombaywalla -- I'm still confused. Are you saying that a tube amp that uses negative feedback is able to adjust the amp's voltage output to compensate for impedance swings in such a way that power (i.e., watts, or volts x amps) appro... | |
| MC cart rebuild frequency: a question for you Thanks Viridian. Just sent Andy a message asking about my Lyra Kleos. Happy Holidays to you too | |
| How do vibrations affect the equipment? The vibrations are reproduced by the speakers and then make you vibrate. :)Actually, I think it introduces electronic jitter into the circuit, which degrades the signal as it works its way through the rig. In the case of tube gear, there's an addi... | |
| Who makes Thanks Al, Bombaywalla and Ralph. Obviously not being a EE tech, the only thing the joule power supply stat empirically and intuitively meant to me was that it helped the amp "muscle" its way through some tough speaker loads. But I didn't understa... | |
| tube amps and electrostatics Thanks Al.... Headphones is where my wife wants me to go. When my wife begs me to lower the gain, and then violates the serene sanctity of my blessed man-cave when she does so, I promise to turn the rig down, but turn it back up even higher when s... |