4 Jan
2005
4 Jan
'05
10:50 a.m.
Right , I'm off to bed after this . If I recall correctly , the best
performing cable in his tests was a lawn mower extension ( mains cable ) ,
on grounds of price at least. The capacitor articles are a bit more involved
, and he does measure noticeable effects. He recommends extended foil
polystyrene below 10nF for instance, together with C0G ceramic and extended
foil polypropylene. As you say the positioning of the capacitor in the
circuit has a bearing on any distortion contribution . The series runs to
six articles , and he develops his own low distortion test gear for the
purpose. Still can't find the cable articles , but he more or less says the
same as you there.
Cheers and goodnight :^) .
Geoff.
----- Original Message -----
From: "Dwight K. Elvey" <dwight.elvey(a)amd.com>
To: <cctalk(a)classiccmp.org>
Sent: Tuesday, January 04, 2005 11:54 PM
Subject: Re: Speaking of eBay
Hi
It is true that capacitors can have nonlinear effects.
In most cases, the design is such that these effects are
vary small and only in cases where the capacitor is used
as a filter parameter that has a sharp cut off, does
this have measurable effects. This means that blindly
replacing all the capacitors is just plain silly.
Speaker wire is another interesting one. All wire
has impedance ( DC and AC effects ). No wire will ever
be the right impedance for an 8 Ohm speaker. Different
speakers are effected differently by the speaker wire.
I've done some AB test with wire and for at least two
speakers, I looked at. I could hear no difference between
6 feet of 12 ga. appliance cord and woven special speaker
wire. I doubt my hearing is good enough today to repeat
such test but at the time my heard was better than average,
being able to clearly hear TV horizontal outputs from any
TV across the room.
Dwight
>From: "Geoffrey Thomas" <geoffreythomas(a)onetel.com>
>
>Electronics World ran a series of articles called " capacitor sound "
from
>July 2002.
>-Discussing how capacitor construction can affect the sound of a hi-fi
amp.
>The author , Cyril Bateman , also did a few
articles on loudspeaker cable
>sound , but I can't find those at the moment.
>
>Geoff.
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