[rec.audio.high-end] Mercury pressings

jas@proteon.com (John A. Shriver) (11/09/90)

The FR lacquers were almost always pressed at RCA Indianapolis.  The
check is for an I (Indy) in the leadout area, and an RCA stamper
number of the A1, A2, A3, B1 form.  (I have seen one one FR lacquer
not pressed by RCA, and the I had been crossed out.)  RCA appears to
have had a very hard long lasting vinyl, with a distinctively good
sound.  RCA is not perfect on surface noise.

The RFR's were pressed by Philips own facilites.  The pressings are
thinner, the vinyl less rigid.  Surface noise is unpredictable.
I have seen some tendency for RFR pressings to be brighter.  I don't
know that this is a process problem per-se, or whether Piros had just
managed to tweak more highs out of his Westrex cutters.  Many
Mercuries are only available in RFR pressings.

I suspect that folks would prefer an FR-1, if only becuase it is
"first".  However, later pressings will have the advantage of the
improvements Piros did make on the cutter.

The M lacquers have been uniformly the pits.  These are the dreaded
Philips remasterings.  In my experience, a Golden Import can better an
M lacquer.  I wonder if M meant "mono-compatible", implying serious
blending for minimum out-of-phase (vertical) modulation.  (Mercuries
have a lot of out-of-phase info.  The hard to track spots usually
consist of a sharp curve combined with a rapid decrease in groove
depth.  The stylus just gets launched.) 

I don't really care what the paper stuck in the middle of the biscuit
is.  My white and green label promos don't seem to be any more
carefully struk (or quieter) than others.  If they've really been used
at a radio station, they can be quite abused.  The same with Vendor
pressings, it's just words on paper.  All Vendor pressings are RFR
lacquers.  This may be what gave Vendor a bad name per-se.

Some orange labels are pressed by RCA, but in the early 70's, when RCA
was not what you would call a paradigm of pressing quality.

The oval label will be found on both RFR and M pressings.  If the
pressing is an RFR, it probably is fine.  It may be noiser than an
older pressing.