|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
71.220.36.188
In Reply to: RE: Smeared? posted by gusser on December 12, 2016 at 11:57:40
It would be very easy to see if measured, as we can measure far lower time based discrepancies on modern test equipment. Two triode sections paralleled act as a uniform composite device even when not perfectly balanced with respect to current and gain. Look at the very well regarded RCA 2A3 as an example, the dual plates. Those are internally connected paralleled sections and they have no issues produced from that construction technique.
Follow Ups:
Zarni, by now you have been around here long enough that no physical proof will sway a religious fanatic. Take the stuff you may have read about Dennis Fraker's amps...specifically how some magical new term 'transfer efficiency' or some such dreck allows a 2.3641 Watt amp to run circles around more powerful amps in terms of delivered SPL. Makes no sense...and yet you hear it constantly, with no definition given to this new term...only, 'come hear it'.
Hopefully, belief in such things will result in the expected consequences...LOL
cheers,
Douglas
Friend, I would not hurt thee for the world...but thou art standing where I am about to shoot.
On a good state of the art, or close to it high fi sytem, there is an audible difference between a single triode, and two paralleled.
In your example, a common NOS bi plate 2A3 will never match the sonics of a single plate 2A3, such as the original HARP 2A3, and the modern EML versions.
Of course, the original Harp 2A3, and the EMLs have symmetrical filament structures, and large emitting filaments, as does the modern JJ 2A3-40, so that is a very large advantage, over a " W" or "V" shaped filament in the standard NOS bi plate.
But people do hear differences, on better audio implementations, parallel versus a single triode. The only instrument that can detect it, is our ears.
No need to discuss Chinese manufacture 2A3s, they are not good enough. Maybe this " single triode in a bottle " is why people with high efficiency speakers like a 45 over a biplate 2A3. Again, "the" measuring device of-choice is a good hi fi, and the parts on either side of our cranium.
Have fun,
Jeff
I'm not going to debate a possible difference in sound between single triode tubes and paralleled section or paralleled separate tubes. People claim they hear all kinds of subtle differences between this that and the other thing.
I just object to calling the inferior sonic quality "smear". That implies some kind of time based latency across paralleled sections giving rise to the music signal that is different from a pure signal. This makes little sense if you know that the electrons involved in carrying the audio signals are moving close to the speed of light, and hence any time discrepancy from taking one different, but very very short path, is of no consequence to the, relatively, very slow audio signal that eventually is produced in your speakers or headphones. Some people tried to use the same logic with feedback loops and time smear was largely debunked as a source of the lesser quality.
I guess same thing with the filament structure. One might be better than an other, but its not due to a lack of time delay effect because of its symmetry.
Hey, you over simplified it, and your conclusions, theoretical, are bogus in practice. I do not mean to offend you in any way. Really !!
The ear can detect many things, and others will support my observations, it is smearing and it is a choir effect. Your "theory " and reasoning would be correct perhaps, if both tube sections were identical in spacing. They never are !!
1 plus 1 equals 2, not 1.
Jeff
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: