[Hallicrafters] Bumblee Caps.

[Guido Santacana]

It has also been my experience that bumble bee caps are usually all bad.
Not so with the black beauties. I have tested many good ones with my
Sprague Tel Ohmite. I have an NC 240D running on them. They are not cracked
and the ones on the high voltage areas tested OK. Somehow they are more
durable.

73s

Guido Santacana KP4FAR

On Friday, November 2, 2012, Richard Knoppow <1oldlens1 at ix.netcom.com>
wrote:

>
> ----- Original Message -----
> From: "Ross Stenberg" <k9cox at charter.net <javascript:;>>
> To: <hallicrafters at mailman.qth.net <javascript:;>>
> Sent: Friday, November 02, 2012 11:10 AM
> Subject: Re: [Hallicrafters] Bumblee Caps.
>
>
> > Yes but do they have the effervescence, sonic purity,
> > musicality, and
> > clarity of those old caps :^)
>
>
>      Sometime in the late 1940's a magazine called "Audio
> Engineering", later called just "Audio" published a list of
> suggested terms for reproduced sound.  I don't have it at
> hand and can't remember much but it ran to about twenty
> terms. Some made sense, like shrill or boomy, but others
> didn't.  I've found that most of the time "obscure"
> characteristics can be traced to very conventional faults
> like gross frequency response errors or plain old
> distortion.  Some of course is just imagination. I remember
> once listening to a symphony concert, I mean live with an
> orchestra in the hall, and hearing a splice go by. What did
> my ears hear that my brain interpreted that way?  I don't
> know but its happened many times.  I also have heard other
> "faults" in live music with no amplification such as
> "wandering" of location, etc. Of course, that is just
> acoustics, but we can hear all sorts of stuff in recorded
> music that is interpreted as some artifact of the
> recording/reproducing process when its no such thing.
>      Sometime in the late 1940's Howard Chinn (I think) of
> CBS ran an experiment that resulted in his conclusion that
> people liked limited frequency response better than wide
> response.  Harry Olson, of RCA, thought this was nonsense
> and did his own testing. Chinn used recorded music
> reproduced on loudspeakers and Olson used a life orchestra
> with bandwidth filtering by means of an acoustical filter
> between the orchestra and audience. Result: people liked the
> widest band possible. The answer to the difference was the
> _distortion_ in Chinn's set up.  The narrow band filters
> reduced the audible distortion so people preferred it. In
> Olson's experiment there was no distortion so people liked
> the wide band best.  One must really know what you are
> measuring.  This was an embarrassment to CBS, who had beat
> RCA to the punch with the Lp record. I think this was sort
> of revenge.
>
>
> --
> Richard Knoppow
> Los Angeles
> WB6KBL
> dickburk at ix.netcom.com <javascript:;>
>
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