First you need to define "3d dynamic extension", in English, in generally comprehensible terms, and which do not rely on Poetry, Religion on Faith.
I should add "in Physical terms" but that might prove too stressful so don´t have much hope of that happening.
Godfathers - this is getting ridiculous.
Robert, dear friend:
Do you maintain that say coupling capacitors, which are so-called "in the signal line" (compared to others, which I then presume are not in the signal line, otherwise where is the argument), require a special high quality component, because their effect is more audible/critical - or for the sake of completeness, more audible than other capacitors not in the signal line (wherever that might be)? (I am just trying to get something clear in this crazy mix; kindly humour me ....)
Robert, dear friend:
Do you maintain that say coupling capacitors, which are so-called "in the signal line" (compared to others, which I then presume are not in the signal line, otherwise where is the argument), require a special high quality component, because their effect is more audible/critical - or for the sake of completeness, more audible than other capacitors not in the signal line (wherever that might be)? (I am just trying to get something clear in this crazy mix; kindly humour me ....)
Johan,
If you go back and read everything Robert wrote, he makes no distinction regarding what function a capacitor serves. Any and all capacitors affect the sound and need to be replaced with audio caps is his argument.
Look at the NAD 306 schematic he attached to a post. The capacitors he claimed made a huge improvement by replacing are not even remotely related to signal coupling.
JM,
Maybe, after you join his capacitor cult, these strange statements will make sense.
If you go back and read everything Robert wrote, he makes no distinction regarding what function a capacitor serves. Any and all capacitors affect the sound and need to be replaced with audio caps is his argument.
Look at the NAD 306 schematic he attached to a post. The capacitors he claimed made a huge improvement by replacing are not even remotely related to signal coupling.
JM,
Maybe, after you join his capacitor cult, these strange statements will make sense.
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Ok let's begin with an indirect definition of "3d dynamic extension".
Mono is poor dynamic extension
Stereo is better dynamic extension compared to mono
3d is the improvement of the stereo so you have a clear "view" of each instrument in the song including details and the mixing sound effects which are magnified
Maybe 3d dynamic extension should be defined the improved perception of the song
Robert,
Correction! Stereo is not 'better dynamic extension'.
It is better spatial extension - if properly performed.
Correction! Stereo is not 'better dynamic extension'.
It is better spatial extension - if properly performed.
...and properly recorded, mastered, etc...😉
I guess "dynamic extension" is some amalgam of dynamic range and extended frequency response. 3d would mean it has height, width and depth...
I guess "dynamic extension" is some amalgam of dynamic range and extended frequency response. 3d would mean it has height, width and depth...
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Do you mean professional sound engineer? If so, thank you for answering my question about commercial interest in audio.robert2017 said:
Not quite true. The output stage cathode decouplers are often electrolytic, and they are in the signal path. However, if appropriate values are used these seem to do little harm to the signal - typically the OPT will be worse at LF.PKam said:
As I said earlier, private meanings of words makes discussion difficult. Why say 'dynamic' when you mean 'spatial'? Do you understand the difference in meaning? As a sound engineer you certainly should!robert2017 said:
Guys, to be fair to robert2017, he starts off by saying he is NOT an engineer.
In the second quoted sentence, I think he means to say "This is more than enough for me in sound engineering terms."
Often, what he means to say is lost in his means of saying it.
The signal caps in my (thermionic valve) amplifier are Mullard 'mustard' types. The accepted wisdom is not to change these very reliable polyester capacitors.
The push-pull output stage is fixed bias, so no cathode bypass electrolytics there.
Attachments
3d dynamic extension.
In fact by using the 3d term 3d means try dimensional or spatial .
So I did not included the term spatial because 3d means a room which is try dimensional space
So what parameters of a cap widens and improves the spatial dynamic extension of music?.
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None. There are methods of widening the image. There are methods of giving more depth to the image.
Maybe in your wimpy little EL-84 cathode bias false amps!
True tube amps use fixed bias and KT-88s and audio caps for 3d dynamic...
Would "Interstage coupling" have been a better term?
(thermionic valve) Once again, a technically accurate, yet boring name.
"Vacuum tubes" sounds much more fun. Like something you'd find at an amusement park.
From what I've heard (other people) the mustards were very high quality caps. I don't go nutty over film cap dielectrics for signal coupling. When putting together a mu-follower mic preamp for a friend, Wima MKP-4. Good quality and reliability. To use some audio grade MPP cap would have cost three times as much. Both polypropylene, both metallized, same voltage. The audio cap had gold plated OFC leads.
That was a few years ago and now I'm questioning the chose of polypropylene over polyester. Is there any real advantage with polypropylene for signal coupling?
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Just you stick to your 'choobs' PK!
P.S. Talking of amusement parks, this thread has been a bit of a 'roller coaster'.
Just you stick to your 'choobs' PK!
P.S. Talking of amusement parks, this thread has been a bit of a 'roller coaster'.
Speaking of "choobs", what is the amplifier you mentioned?
My limited experience with tube amps has been with Scott, Dyna, Heath and the like. Not with foreign valve amps.
I'm curious about the differences in topology.
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What do you think of these robert2017. I've used them frequently, even as upgrades to old electrolytics in mass market loudspeakers.
https://www.mouser.com/ds/2/440/e_WIMA_MKP_4-1139861.pdf
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