A person may or may not be a trusted listener in my book. If two trusted listeners disagree then that might warrant some investigation to find out why. That said, all listening reports are data points. I would like to have as much data as possible.
Then you may as well drop the "trusted" bit and make your investigations a bit simpler.
Concur, although my taste is more wheat, less chaff.(despite being gluten intolerant)😉
My only dislike in this whole ESL discussion is that I cannot assist with any tests.
I assume the use of a guard ring on an ESL panel would probably be best in the exotic/planar forum, as I do not think many here would choose to alter the diaphragm of an expensive speaker, whereas a DIY builder might be more willing.
An aftermarket kit to perform a nitrogen bleed for drying panels otoh, seems less intrusive, and may be a viable solution for those having RH issues.
As Han's pointed out, the discussed tests will take a lot of time, and my focus has been on trying to reduce required testing as much as possible to lighten the load. Looking for a simple polar plot dependence on bias voltage I believe to be the quickest reveal, followed by a frequency response vs bias which requires more data points. (Oh, only for t-line ring structures btw)
But I really do appreciate both Hans and Demian for doing any tests at all, thank you.
Jn
Ps.. Even if the tests are unproductive, I really hope my guard ring and bleed drying mentions are useful for someone..
Last edited:
Ah, there is one key element you forgot to add.
The initial observation. Had he not reported a possible dependence between bias voltage and alteration of "flatness", none of this discussion would have taken place.
Jn
Last edited:
These are great ideas and input. Being realistic there are limitations on what can be done with the existing speakers. The humidity problem doesn't seem to be universal. Dust however is and the speaker left open works just like the electrostatic dust filter in a furnace and can get pretty dusty. The dust will cause problems with the panels pretty quickly.
The bias supply's internal impedance is quite high and even microamps will pull it down some. The existing panel has long conductive connection pads on the top and bottom edge of the diaphragm with 2 connections to the bias supply.
I would like to seal the drivers in plastic but they need a way to pass air from inside to outside to handle air pressure variations. All resolvable problems. I don't see much motion at Quad UK or Quad China to change anything inside. Still using nitrogen to flush the inside of the speaker after mounting the dust covers is a great idea. If I were setting up a manufacturing line I would look as a class 100 clean room (probably surplus from a disk drive mfr) to start with good product. Lots of other areas to deal with as well including the structure of the panels, internal acoustic reflections etc.The existing internals are mostly unchanged in 30 years with a few electronic "upgrades" almost 20 years ago.
I meant technical information, not listening impressions, or lack of them, for example, what you were saying about the frequency response of the Quads, that's still not clear.
Of course, this is pure BS.
I must say that I'm very disappointed by your latest posts.
Stein
No, it isn't. Several members did indeed warn me on what would happen.
As I stated earlier, your opinion is of no concern to me.
However, if you have an actual technical remark to make, you can be assured that I would read and consider it.
So far, you have not done so. You have been content to sit in the cheap seats and toss marshmallows, saying I'm incorrect without any reason other than emotional ones.
If you choose to engage the technical discussion, I would welcome it.
As of yet, no joy.
Jn
Shame on all those who haven’t regretted for a moment their selfish attitude and ill intentions by which they insult the hosting forum that allows them communication with their peers.
George
George
Please read my posting again.
I have no objection at all against criticism, that keeps one alert and young.
If you can’t stand the heat .....
But postings with no other intention then to insult someone way below the belt like the 99% are completely immoral.
A defense like “he also did it to me” is something you expect from a 4 year old kid and not from an adult.
Hans
Personally, I would reduce drastically this number on the decline. ;-)
The great misunderstanding is not the quality of the listening equipment (hear) but the filters we use to evaluate-it. (Culture).
I imagine that people that are not confronted with harmonic distortions can be a lot less sensible to them than people that knows exactly how are sounding those distortions.
As all sound engineers are sensitive to their own errors and imperfections, a sensitivity that increases with experience and over the years, my evaluation of my own success also tends to decline. It is the destiny of all people with an "artistic" sensitivity to find only others to admire in the art they practice.
Was it a level matched double blind test?
You already know that anecdote isn't evidence but you doubled down with it. That's called willful ignorance.
Possibly like a 4 year old kid, giving him a dose of his own medicine may be what gets his attention. Talking like an adult gets: "Okay, dad. Can I go out and play now?"
It has no effect on changing his bad behavior. Again, your comments are all one sided: blaming the victims.
Last edited:
- Status
- Not open for further replies.