Sorry, Dewey, you misunderstood. You had to smoke the pot to imagine
there was an improvement.
Believe it or not, in the very early days (early 1950s) of printed
circuits, before Circuitape/Brady/Bishop brought out adhesive draughting
aids, we drew the pattern in Indian ink on aluminium-reinforced
cartridge paper (those were the days, my friend -- I think that may make
a good song title!). I draughted along the orthogonal axes + 45° but a
colleague always used a compass for wide radius bends because he
believed the electrons would follow the track better without the 45°
corners!!!
In those days, we used offset printing and while the ink was still wet,
we sprinkled the board with a dark red powder (dragon's blood) which
adhered to the wet ink. This was then heated and the powder melted to a
pitch-like consistency. That was our etch resist! Anyone else remeber
this "technology"?
Brian
Whittaker, Dewey (EHCOE) wrote:
> Back in the 70s, it was a highly held belief that if you pot the
> electronics, there was a great improvement in the clarity and depth of
> the music.
> Dewey
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Michael Kirschner
> Sent: Sunday, May 20, 2007 2:02 PM
> To: [log in to unmask]
> Subject: Re: [TN] Friday TechnoTopic
>
> Heh heh...
>
> It's all to feed, and thereby make $ off, the terrible disease called
> "audiophiliosis"...some friends of mine have it...spent tens of
> thousands of
> dollars on spectacular equipment and whiz-bang cables to listen to
> cassette
> tapes of Grateful Dead concerts...
>
> ;o)
>
> Mike
>
> On Sat, 19 May 2007 10:50:39 +0300, Brian Ellis <[log in to unmask]> wrote:
>
>> No, but it's great for 78s! :-)
>>
>> Brian
>>
>> John Burke wrote:
>>> Would it improve the sound on my 8 track??
>>>
>>> John...................8-)
>>>
>>>
>>>
>>> John Burke
>>>
>>> (408) 515 4992
>>>
>>> -----Original Message-----
>>> From: TechNet [mailto:[log in to unmask]] On Behalf Of David Fowler
>>> Sent: Friday, May 18, 2007 10:58 AM
>>> To: [log in to unmask]
>>> Subject: Re: [TN] Friday TechnoTopic
>>>
>>> They do have the amplifier built into the speakers. I saw some
> about 8
>>> years ago, sounded nice, and were good and heavy.
>>>
>>> Then you can get into the copper crystalline signal cables, which are
>>> just as expensive as the speaker wires.
>>>
>>> It's all about the money...
>>>
>>> david
>>>
>>> Hogg, Blair K. wrote:
>>>> I wonder why someone doesn't just put the amplifier at the speaker
>>>> itself, then run line level audio through shielded cables to each
>>>> amplifier. Probably too much chance of em noise affecting the
> signal.
>>>> Could always go digital to the speaker, then turn it into audio
> signals
>>>> driving the voice coil. I think that is how it is done on some
>>>> automotive systems.
>>>>
>>>> -----Original Message-----
>>>> From: TechNet [mailto:[log in to unmask]] On Behalf Of Inge
>>>> Sent: Thursday, May 17, 2007 9:27 PM
>>>> To: [log in to unmask]
>>>> Subject: Re: [TN] Friday TechnoTopic
>>>>
>>>> The world is full of nonsense. A friend of mine bought water cooled
>>>> speaker cables with pure gold connectors. That cable, I assure,
> could
>>>> supply current to a whole block in Santa Domingo. Myself, have an
>>>> ordinary "room cord" like the one you use for your desk lamp, this
> one
>>>> 15 feet long wire feeds a 800 W bass speaker. The loss in the wire
> is so
>>>> low, that it's neglectable, and the distortion would noone hear when
> the
>>>> bookshelves vibrate and you feel the thunder through the chair's
> legs. I
>>>> prefer to listen to the music, not to look at the music via a
>>>> oscilloscope and a spectrum analyzer.
>>>> Inge
>>>>
>>>> ----- Original Message -----
>>>> From: "Graham Collins" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: Friday, May 18, 2007 7:21 AM
>>>> Subject: Re: [TN] Friday TechnoTopic
>>>>
>>>>
>>>>
>>>>> Ha! I'm guessing that wasn't a blind test. How would that short
>>>>>
>>>> piece
>>>>
>>>>> of wire impact audio performance? It's connecting a household plug
>>>>> socket, through the house wiring (of dubious quality if it's Inge's
>>>>> house...) and the power grid... and has a transformer on the other
>>>>> side, presumably.
>>>>>
>>>>> I'm guessing this is along the lines of the speaker wire a sales
> guy
>>>>> tried to sell me one time. It was 12 gage wire (overkill, but OK),
>>>>>
>>>> but
>>>>
>>>>> he was very earnest in telling me that the wire was formed such
> that
>>>> it
>>>>
>>>>> was optimized for electron flow in one particular direction...
>>>>>
>>>>> I'm thinking it's only applied to the AC power cord because
> anything
>>>>> more complicated would not emerge functional. Component failures
>>>>>
>>>> aside,
>>>>
>>>>> what would that do to solder joints???
>>>>>
>>>>> regards,
>>>>>
>>>>> Graham Collins
>>>>> Process Engineer,
>>>>> L-3 Communications Electronic Systems Inc.
>>>>> Halifax
>>>>> (902) 873-2000 ext 6215
>>>>>
>>>>>
>>>>>>>> [log in to unmask] 05/17/07 10:37PM >>>
>>>>>>>>
>>>>> There is a process in High End Audio which purports to enhance
>>>>> equipment performance , called CryoTreatment.
>>>>>
>>>>> In this process the audio gear is subjected to a ramp down to -281F
>>>>>
>>>> (or
>>>>
>>>>> cooler, but not below -320F), followed by a soak of 20 to 40 hours,
>>>>> followed by a specific warm-up cycle back to R/T.
>>>>>
>>>>> It is postulated that the technical explanation for the enormous
>>>>> listening benefits of the process is a re-arrangement or
> refinement
>>>> of
>>>>
>>>>> the crystal structure of the conductor metals. The effect is so
>>>>>
>>>> powerful
>>>>
>>>>> that objective listeners reported a significant improvement in
> audio
>>>>> quality when the AC power cord for a preamp was so treated. I
> doubt
>>>> my
>>>>
>>>>> aging ears are responsive to subtleties of this nature.
>>>>>
>>>>> Anybody care to estimate how an electronic assembly, surface-mount
> or
>>>>> otherwise, including semiconductor devices, would fare thru this
>>>>> process?
>>>>>
>>>>> Tom Stearns
>>>>> 3 Brander Court
>>>>> Nashua, NH
>>>>> 03063
>>>>>
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