From: Patent Tactics, George Brock-Nannestad
I did not want to repeat my praise for the ELP, because the matter was up not
that many months ago, but it does offer spectacular advantages, such as not
having to clean a record before sampling it.
But now that we have learnt what it was wanted for, I think it only fair to
mention that lacquer records cannot be played anyway, because the reflection
from the material is too weak. It does not matter whether the rim has a
break; what Mike mentioned would be that there should not be a bite taken out
of it. Shellac records in many pieces loosely held together with tape on the
reverse side will play absolutely fine and will save you many hours of
cementing together the jigsaw. If a bite were missing I would definitely
experiment with a temporary patch that only had to fulfil the requirement
that the reflection should be similar and that there should be no local
sudden change in outer radius. Filing a shard from another record for a loose
fit in the gap might work. I have not tried it. I can foresee certain issues
of groove pitch, but some experimenting would tell. The audio information is
gone from your record in that spot anyway, but the erroneous sound you get
for a few fractions of a second for a few turns of the record can be edited
out/blanked digitally later.
I do not think a glass disc broken into two pieces is at all unsalvageable. I
am slightly worried that they do not fit together; at least the carrier glass
should, but perhaps the lacquer layer has shrunk back from the broken edges.
There was one Swiss archival turntable (well, in particular its pickup) that
would work in this situation; it used a trailing optical fiber that will stay
in almost any groove.
John R.T. Davies used to have special jigs to support broken records to be
able to play them with a normal pickup, and my personal experience has been
that as long as you ensure that the stylus encounters a step DOWN at both
cracks when playing a record broken in two, you are basically fine. If you
are going to use cement to fill the gap you must think globally: the two
pieces have to be twisted ever so slightly when fitting them, and the repair
will then be good for both sides. Again depending on materials and care, you
may handle the record carefully, e.g. for turning it over, but obviously it
will not tolerate sleeving.
We are looking forward to yet another unique jazz find!
Doug Pomeroy wrote:
> Thanks to all who responded. I remembered that the ELP
> would play cracked records in some cases.
> I did not remember about the need for a complete rim!
> The glass disc I have is in two pieces, which means the rim
> has two breaks in it. So I guess the ELP offers no solution.
> The disc I have was probably broken more than 50 years ago,
> and the pieces will NOT fit back together tightly. It's an
> important, unique recording (Art Tatum Trio) but I guess it is
> Doug Pomeroy
> POMEROY AUDIO
> [log in to unmask]
> > Date: Fri, 4 Mar 2011 10:44:26 -0500
> > From: Michael Biel <[log in to unmask]>
> > Subject: Re: ELP turntable 5 years ago
> > In 1998 I had a chance to play with the ELP that the Vienna Phonotek
> > had. It played almost all the 78s I threw at it as long as it was
> > black
> > and had a complete rim. It would play cracked records as long as no
> > white lamination paper showed thru. It would even play a record that
> > had scotch tape on the grooves!
> > Over the years at ARSC and IASA there have been numerous presentations
> > and several times I explained that the need for a complete rim on the
> > record was a major drawback to its usefulness. We needed it to be
> > able
> > to play thru a gap. The most recent time I discussed it, the head of
> > the company said it was a software issue and could be overcome at a
> > $10,000 cost!
> > Deos anybody know if this has been worked out in the newer models?
> > Mike Biel [log in to unmask]