I'm wondering if that record may have been played on an acoustic machine made for laterally-cut records, using a steel needle. That would have severely damaged the vertical modulation, and destroyed it with repeated plays. Many years ago, I had a book on antiques and collectibles that had a photo on the cover of a genuine Victrola playing an Edison Diamond Disc. As Toscanini used to say, "Ignorante." 

Of course, the record should not appear to be in excellent condition, if that's the case. But, I'm at a loss to explain this, otherwise. 



Gary Galo
Audio Engineer Emeritus
The Crane School of Music
SUNY at Potsdam, NY 13676

"Great art presupposes the alert mind of the educated listener."
Arnold Schoenberg

"A true artist doesn't want to be admired, he wants to be believed."
Igor Markevitch

"If you design an audio system based on the premise that nothing is audible, 
on that system nothing will be audible."
G. Galo

-----Original Message-----
From: Association for Recorded Sound Discussion List [mailto:[log in to unmask]] On Behalf Of Lou Judson
Sent: Thursday, November 07, 2019 11:48 AM
To: [log in to unmask]
Subject: [EXTERNAL] Re: [ARSCLIST] Trouble with Edison Diamond Disc

I don’t do disc, only tape, but a though occurs - why not try it with a stereo cartridge wired for stereo and look at the waveform? Maybe that one is not vertical?

Lou Judson
Intuitive Audio

> On Nov 7, 2019, at 7:52 AM, 6295LARGE . <[log in to unmask]> wrote:
> The cartridge is wired out of  phase.  That's why most of the other EDDs
> play beautifully.
> Thanks,
> Ben
> On Wed, Nov 6, 2019 at 5:34 PM Dennis Rooney <[log in to unmask] <mailto:[log in to unmask]>>
> wrote:
>> Dear Ben,
>> Is your M44 stereo cartridge wired out-of-phase? It has to be that way to
>> ensure optimal vertical pickup.
>> DDR