Silly guy...it's when the kids are in bed..and you have a glass of wine in your hand..😀
Hey, speakin of kids, how is your daughter doing? Where she working now?
jn
point source vs line source is still argued on a daily basis. I would suggest that outside the USA the QUADs are more well known as a lot of the ML speakers are just too big for the housing.
like these MartinLogan Masterpiece Renaissance ESL 15A loudspeaker | Stereophile.com
She's doing her Phd in Marseilles on thin film optical coatings and having fun. She tried to explain what she's doing and I felt like homer simpson. One day I'll work it out.
Hopefully she will be there long enough to get residency.
That was how things went for the ESL57 that came before the ESL63 in 1981.
As far as I know, and from what I have seen in Germany where an official Quad repair shop is, foil for the ESL63 is only coated on one side, exactly for the reason as mentioned in your second link.
"if each side of the membrane does not have a similar resistance (coated both sides) then there will be an imbalance between Ia and Ib on each side and this will contribute to any non-linearities in the speaker, but it will also affect the distortion performance, point-to-point.".
Hans
The best thing is when the kids outperform and outthink us.
Our job is to try to make sure that doesn't happen before they're 12...😱
jn
What is better is what excites room resonnances and waste power outside from the listening position the less.
I find when it's quieter late at night I can keep edging the volume down as my ears adjust and it seems I hear more, could be both my ears and speakers distorting less. I think it was Richard posted something about IMD being much less below approx 80dB?
I'd say it is hard to imagine that a well done (but slightly to mildly non-equal) coating on both sides could introduce a bigger imbalance than the non-coating on one side.
Agreed.
Without any coating providing charge mobility, the only way for the second current is through the film. Since the film is Epsilon r 3, a gap of 2500 microns with epsilon R one will dominate the capacitive currents.
jn
The resemblance of recent Markw4's and Jakob(#)'s usual posts are hard to shrug off. Same playbook alright, deflect, divert, strawman, smoke & mirrors... etc for the business interest.
I think that improved late night listening often comes from the DIRTY AC that gets progressively cleaner late at night. IBM did a paper on this, decades ago.
The resemblance of all the post of Mr. Lmdbt is hard to shrug off. Same personal attacks, same harassments, same crazy paranoia. In loop, endlessly.
What kind of pleasure do-you take at it ?
Don't you have something more productive to do in your life than to bite the postmen and the tires of the cars ?
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Quoted for future reference.
How do you know if they really hear small effects or just think they do? And where are those people?
I hope not, unless his intent is to show what the typical audiophile's room acoustics is like.
Everytime I hear a difference I undo it and go back/forth several times verifying and sometimes taking days or even weeks, then after verification I try to figure out a reason which is fairly difficult sometimes, and from the looks of it even if had decent measuring equipment it seems as though these subtle differences aren’t going to show up......at least with anything I could afford to measure with.
Edit.... and just to be clear all changes are not ‘better’ in fact most are worse or indifferent but knowing what causes the difference is important to me.
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In thinking the numbers, the sheet resistivity being bandied about is 10e+12 ohms per square.
The charge resistor in richard's schematic is 10 meg.
How imbalanced can the two currents Ia and Ib ever be? The resistivity of the center film is roughly 5 orders of magnitude higher than 10 meg.
What is the current through the audio transformer secondary?
jn
Don't know, but I'm very curious why are you so eager and quick to comment on these unhealthy debates, rather than simply ignoring (at least me, for example). It appears to me you are really enjoying these. 😀.
No. This place is named "the lounge". I was hoping to share nice moments with people of good company. You, too, do not meet this definition.
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