[Dixielandjazz] How many grooves? (was: LP Recording - Here's one to ponder)

[Stan Brager]

Bob;

There are only 2 grooves on an LP, 45, and most 78s - the run-in and run-out
grooves on each side are part of the main music groove. The end of the
groove runs into itself so that the needle's point doesn't get ruined by the
label. 

Stan
Stan Brager

> -----Original Message-----
> From: Bob Smith [mailto:robert.smith at tele2.no]
> Sent: Thursday, October 20, 2011 10:51 AM
> To: alevy at alevy.com
> Cc: Dixieland Jazz Mailing List
> Subject: [Dixielandjazz] How many grooves? (was: LP Recording - Here's
> one to ponder)
> 
> I always thought there were four grooves: two on each side. Doesn't the
> music groove run out in the centre of the record to a circular groove
> that
> retains the needle?
> 
> Kind Regards
> 
> Bob Smith
> 
> 
>