[78-L] 78 rpm stylus question

[Erwin Kluwer]

The thing is broken .. return it..

On Thu, Aug 28, 2014 at 9:52 AM, Christopher Steward <
chris.1picc at yahoo.co.uk.invalid> wrote:

>
> I've found this same effect using a 3 mil stylus for the Shure M75 bought
> from the Ed Saunders site. On some discs there is just a sharp notch at 15
> kHz, and on others it's accompanied by the rise that Joe refers to. Can
> anybody explain this strange anomaly?
>
> Chris
>
>
> On Wednesday, 27 August 2014, 23:55, "jsalerno at earthlink.net"
> <jsalerno at earthlink.net.invalid> wrote:
>
>
>
>
> The 2.8 TE is producing a notch at about 11.3 KHz. Under the notch is a
> slight increase in amplitude, say apx. 10.8 to 11.1 KHz. The 3.0 does not.
>
> I've never seen anything like this. To my ears it sounds rather like dog
> whistle, but of course it is not.
>
> Joe Salerno
>
> On 8/27/2014 3:41 AM, Christopher Steward wrote:
> >
> > Hi Bryan,
> > I know your post was a long time ago, but for some reason I kept it, and
> have just looked at a spectrogram of your files. There's a very strange hf
> glitch in the recordings using your 2.8 mil stylus which I also have
> recently encountered. If you would like me to send the spectrogram feel
> free to contact me off-list.
> > Chris
> >
> >
> > On Monday, 7 January 2013, 15:36, Bryan Wright <bryan at claxtonola.com>
> wrote:
> >
> >
> >
> > Occasionally when I buy new 78 styli (either from Esoteric Sound or
> > Expert Stylus), I get one that sounds "different." I usually order
> > truncated elliptical styli in sizes ranging from 2.0 mil to 4.0 mil.
> > I'm accustomed to the general "sound" these styli provide, and I know
> > what I should be hearing. However, once in a while I get a new stylus
> > that produces sound with a light constant "hiss" and a greatly pinched
> > frequency range in which the highs seem to be greatly reduced or
> > virtually gone. I've encountered this same general "altered sound" on
> > about one out of every three or four new styli, and it can affect any
> > sized stylus. Rather than try to describe it further, I've posted an
> > audio sample with four brief clips:
> >
> > http://www.bryanswright.com/2013-stylus-test.wav
> >
> > 1. The first 15 seconds is played with a "normal" 3.0mil TE stylus
> > 2. The next 15 seconds is the same record with a stylus as I describe
> > above (in this case, a 2.8mil TE stylus)
> > 3. The next 20-25 seconds is another record with the "normal" 3.0mil
> > TE stylus
> > 4. The final 20-25 seconds is the same record with the "problem"
> > 2.8mil TE stylus
> >
> > I don't have a microscope to examine these two styli carefully to see
> > what might be causing the different sound. Does anyone here know? Is
> > the 2.8mil stylus in the audio excerpt defective? It isn't always
> > "worse" (sometimes, the reduced frequency range is a blessing on
> > really worn records), but in general, I much prefer the sound of the
> > stylus in the first example above. It sounds much more "open" and
> > "natural" to my ears.
> >
> > Thanks,
> > Bryan W.
> >
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