Happy New Year to All:-)

It would be interesting to know how many on this
group think/find that:

a) capacitor "upgrade" results in a clearly audible
improvement.

b) a capacitor is a capacitor, and all caps of the same
value and voltage rating sound the same.


Iain

In article ,
Iain M Churches wrote:
b) a capacitor is a capacitor, and all caps of the same
value and voltage rating sound the same.

There's rather more to a capacitor than just value and voltage rating.
Otherwise there would be only one type on the market.

--
*If at first you don't succeed, try management *

Dave Plowman London SW
To e-mail, change noise into sound.

"Dave Plowman (News)" wrote in message
...
In article ,
Iain M Churches wrote:
b) a capacitor is a capacitor, and all caps of the same
value and voltage rating sound the same.

There's rather more to a capacitor than just value and voltage rating.
Otherwise there would be only one type on the market.

Yes indeed. I was trying to start the thread off in a simple manner.
Please add as many variables to the equation as you wish.
Do you have any opinions/experiences of the upgrade path?


Iain.

In article ,
Iain M Churches wrote:
There's rather more to a capacitor than just value and voltage rating.
Otherwise there would be only one type on the market.

Yes indeed. I was trying to start the thread off in a simple manner.
Please add as many variables to the equation as you wish.
Do you have any opinions/experiences of the upgrade path?

Not really. I tend to favour polyester layer for audio path stuff.

--
*I yell because I care

Dave Plowman London SW
To e-mail, change noise into sound.

"Iain M Churches" wrote in message
...
Happy New Year to All:-)

It would be interesting to know how many on this
group think/find that:

a) capacitor "upgrade" results in a clearly audible
improvement.

b) a capacitor is a capacitor, and all caps of the same
value and voltage rating sound the same.


Iain



Happy New Year Iain and everyone..

a) When I upgraded my Lumley monoblocks I modified one with Jensen copper &
oil caps and compared modified to unmodified The moded one came up tops
every time according to five enthusiasts but my back hurt afterwards with
the changeovers :-( The only way to know which amp was which was by
removing the base cover which we did expectantly after the event...I
breathed a sigh of relief that it was the moded one as those caps ain't
cheap.

But hey, we must have been imagining it all as we all know there is no
difference between competent amps, cables, CD players, components, stands,
spikes, cones :-)
Had a great late night session last night till 5am, the music just sounded
better and better as the night progressed... which may have been due to
certain beverages :-)

In article , Mike Gilmour
wrote:


But hey, we must have been imagining it all as we all know there is no
difference between competent amps, cables, CD players, components,
stands, spikes, cones :-)

The snag here for me is that any effect due to changing cap type may be due
to some process like the interaction of the cap's external fringing fields
with its local environment. This will depend on the amp layout (including
the wiring loom) as well as the nominal circuit diagram topology. As a
result, any deductions drawn from testing in one example of an amp may not
tell us anything about what might happen in other amps. It may also be due
to 'undesirable' effects which can introduce problems that go undetected in
a listening test.

We also would need to take care to ensure that the values/properties chosen
are close enough for a comparison to be 'fair' if we are trying to
determine a specific hypothesis - e.g. that it is the dielectric that is
having an effect. It is one thing to feel that a change of component has an
effect. It is something else to establish a physical mechanism.

Had a great late night session last night
till 5am, the music just sounded better and better as the night
progressed... which may have been due to certain beverages :-)

I think I know what you mean here.... But further experiments may be
required to pin down the effect. ;-

Slainte,

Jim

--
Electronics http://www.st-and.ac.uk/~www_pa/Scot...o/electron.htm
Audio Misc http://www.st-and.demon.co.uk/AudioMisc/index.html
Armstrong Audio http://www.st-and.demon.co.uk/Audio/armstrong.html
Barbirolli Soc. http://www.st-and.demon.co.uk/JBSoc/JBSoc.html

Well I presume that the closest approach to the ideal capacitor is
a pair of parallel plates in a vacuum! A bit bulky for anything more
than nanofarads though!

Hey, what limits the voltage on a vacuum-plate capacitor? I should totally
know this, but above a certain voltage for a given separation, is there
any kind of breakdown?


Martin
--
M.A.Poyser Tel.: 07967 110890
Manchester, U.K. http://www.fleetie.demon.co.uk

"Fleetie" wrote in message
...
Well I presume that the closest approach to the ideal capacitor is
a pair of parallel plates in a vacuum! A bit bulky for anything more
than nanofarads though!

Hey, what limits the voltage on a vacuum-plate capacitor? I should totally
know this, but above a certain voltage for a given separation, is there
any kind of breakdown?


Martin

So what are your thoughts/experiences regarding upgrades?


Iain

"Iain M Churches" wrote
So what are your thoughts/experiences regarding upgrades?

I have no such experience.


Martin
--
M.A.Poyser Tel.: 07967 110890
Manchester, U.K. http://www.fleetie.demon.co.uk

On Sat, 01 Jan 2005 16:08:29 GMT, "Fleetie"
wrote:

Well I presume that the closest approach to the ideal capacitor is
a pair of parallel plates in a vacuum! A bit bulky for anything more
than nanofarads though!

Hey, what limits the voltage on a vacuum-plate capacitor? I should totally
know this, but above a certain voltage for a given separation, is there
any kind of breakdown?


Martin

I have a graph...

http://www.donepearce.plus.com/odds/DielectricGraph.gif

d

Pearce Consulting
http://www.pearce.uk.com