Granite is well-known for its ability to maintain precision flatness and has sufficient mass
to naturaly resist motion, not to mention its stunning beauty. Natural stone however, will ring
like a tuning fork unless certain measures are taken. First we bond the granite slab to a sheet
of medium density fiberboard (MDF) which has excellent anti-resonant properties (that is why
MDF is widely used in the manufacturing of speaker enclosures), next we calculate the best points
in which to support the slab such that it tries to oscillate outside of the stones natural resonant
frequency thus affecting its ability to "ring". Threaded inserts go through the MDF and make
direct contact with granite. The granite is essentialy coupled through the supporting frame
and on to the floor. The result is a "rock solid" and quiet platform for your components.
You'll here the true timbre of the music with no added coloration.
The shelf support-frame utilizes heavy-gauge steel tubing fully welded at the center point to
increase torsional stiffness. The attachment plates are fabricated from 1/4 inch steel plate.
Steel, like granite, rings like a bell unless it is properly damped, so the weight of the
granite rests at points that interfere with the linear resonance of the tube. When filled with
sand (or lead shot), the frame becomes about as sonic as "a stick in the mud" yet it continues
to couple energy toward the floor. Leveling is provided by a 1/4-20 conical set screw and jam
nut at each leg of the support frame.
The support struts, extruded from aluminum, feature full length T-slots or channels. These slots
provide attachment points along the entire length of the strut through the use of a special nut
called a T-nut. This design has been used for many years now in the construction of industrial
furniture and machinery frames. It is strong and versatile.
We have a limited variety of stone colorations available for immediate delivery. These include
Absolute Black, Blue Pearl, Labrador Green and Juparana Columbo. Other selections including
marble and limestone are also available with longer leadtimes. Black is standard.