We have developed and refined the mat over the
last 9 years, for use with high- mass turntable designs. Let me tell
you a little bit about it.
I am sure you know all too well that high mass
and low mass platter materials offer almost diametrically opposite
strengths and weaknesses. Whilst we want the pitch stability, and
the assured, planted presentation of the high mass platter, we also
desire the naturally illuminated tone colours, lucidity and
dimensionality of low mass platter materials like acrylic and
polycarbonate.
On the other hand, low mass platters can lack
bass extension and pitch stability whilst the high mass platters can
sound monochrome and dynamically pinched.
It seems that just as high mass stores energy as
rotational inertia, so it stores vibrational energy from the
interaction of the stylus and record. This energy is released back
into the record producing constructive and destructive interference,
and hence the lack of low level resolution / dynamic range / tonal
colour.
Polycarbonate, for example, disperses this energy
very rapidly without either storing or damping (which is why in
polished form it is used as bullet-proof glass). As a platter
material it has some very remarkable qualities, but unfortunately,
simply using a 'super' mat of polycarbonate on top of an existing
high mass platter does not produce the same result as using a single
homogenous platter material. Something more involved is required.
The material we have evolved over the years is
composite in construction.
The shiny side is a hard gel coat glaze
impregnated into the carbon fibre fabric. This is a poor energy
transfer interface and an ideal surface to face down onto the
existing platter material. It is advisable to remove any supplied
felt or rubber mats before fitting. This glazed carbon fibre surface
is backed with a layer Spheretex. This is a ceramic textile which
pulls the gel coat through the carbon fibre weave to create a
substrate of remarkable compressive strength. On top of this is a
2mm layer of expanded polyurethane foam and then another layer of
carbon fibre, but this time without a gel coat. It is this matt
surface that the record sits on. The centre hole is made
deliberately tight so that the mat does not slip on the sub platter
during use. It also obviates the need for bonding materials like
double-sided tape.
We supply a Michell clamp to gently grip the
record to the mat.