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Hi, has anyone got some recent experiences with the 45-tubes from EML?
I have bought the Welborne Star Chief 45 monos which have a pair of TJ Mesh Plates. I have had the opportunity to test a pair of EML mesh plates, and like them more than the TJ's.
But what about the solid plates?
Sound quality/differences from the Mesh plates?
Reliability?TIA
Best regards
Ola
Edits: 02/03/08Follow Ups:
Say what only 1 year. I have solid plates going on 4 years and they still sound as good as ever. Used in Welborne DRD and Don Allen mono's. They are the best of all types (nos) however I must say that I've never heard the EML meshies just the TJ's (that are sitting gathering dust).
I prefer the solid plates in my Yamamoto. With regular play, they seem to last about one year.
About how many hours would you estimate that to be?
Thanks :-)
What is the (sonic) advantages with the solid plates?
Regards, Ola
More solidity and extension.
My impression is that the meshplates have a bigger soundstage, but, I characterize this sound as being slightly phasey (a bit like the kind of diffused but large soundstage when relative phase of one channel is inverted with respect to the others). Is this the same as your finding the solid plates as having more "solidity"?
Exactly. Phasey is a good word - fluffy and airy but with a lack of definition and articulation. In my amp and to my ears, as always -;)
Very interesting, thank you! :-)
What about dynamics? Resolution? Transparence? Depth of soundstage?
Any significant differences?
Regards
Ola
Hi all. I am also interested on comments/comparisons of EMM's 2A3... as compared to TJ or RCA...etc... TIA
A friend of mine had the 45 meshplate and I run meshplate 2a3. These are tubes that MUST be run conservatively to get reasonable life. My amp is cathode biased (autobias) which tends to be gentle on the tube. When I tried the tube in a friend's amp, biased for lower than spec. current, the amp still started to sputter and make strange noises and the tube began to flash. But, in my amp, I've had the meshplates for more than two years with no problems. The friend with the meshplate 45 had his tubes go in VERY short order (about 10 hours each) and they were replaced with solidplate tubes by the distributor; those lasted about a year.
Sonically, I really like the EMLs, much more so than my TJ meshplates and the JJs I bought recently to try out. The EMLs project a much bigger, more enveloping soundstage (perhaps a bit phasey sounding), while managing to keep a solid, palpable center image (a nice trick because wide and solid don't often go together).
I really like the EMLs, but one should operate them conservatively to preserve their life.
Hmmm. By conservative, you mean, say 85% of power dissipation? or even less? TIA
I am sorry, I don't even know the operating parameters of the amps I have (Audionote (uk) Kagekis). It is cathode-biased, so I cannot adjust the bias, so I don't know dissipation, milliamps of current, etc.
In the amp that I tried the meshplates in (pushpull 2a3 amp), the amp was biased to 50ma of current, and that proved to be too much (sorry, I don't know the plate voltage of that amp). This amp does NOT chew up tubes, so the fact that the meshplates did not work well in it is the primary basis for my saying that this tube must be run conservatively.
LarryI
For the EML 2a3 Mesh what value do you recommend for biasing to run the tube conservatively.
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