[BC] Turntables (WAS:Achieving good S/N)

[Robert Orban]

At 03:09 PM 1/2/2006, you wrote:
>From: Rich Wood <richwood at pobox.com>
>Subject: Re: [BC] Turntables (WAS:Achieving good S/N)
>To: Broadcast Radio Mailing List <broadcast at radiolists.net>
>Message-ID: <7.0.0.16.2.20060102155453.0686dcd8 at yahoo.com>
>Content-Type: text/plain; charset="us-ascii"; format=flowed
>
>------ At 07:03 PM 1/1/2006, Robert Orban wrote: -------
>
> >The statement of not reading vertical components in the groove is
> >nonsense. The vertical modulation of the groove represents the
> >stereo difference signal (L - R). Any record player unable to read
> >the vertical modulation of the groove is, by definition, a mono player.
>
>I guess even audiophiles at audio conventions can be wrong. As can
>audio writers. They mentioned the 45/45 groove cut. Since I haven't
>owned a record since I moved from San Diego to New York I have no
>need for a multi-thousand dollar turntable.

I think the confusion comes from the ELP website, where they state that the 
laser TT will not reproduce Edison-style hill-and-dale (vertical cut) 
discs. This is because the groove angles of these old records are not at a 
45 degree angle; they are much steeper and the laser TT optical system is 
not designed for this angle. However, if someone chose to cut a vertical 
record with a modern stereo cutter, the laser TT would have no trouble 
tracking it.

Bob Orban