I apply a constrained layer damping solution to my SP10MK2 I use a K-works ERSA mat on the platter then a 1/8 technics rubber mat topped off by a Boston Mat-2 . I use a Michell clamp to couple the record to the stack .I feel this arrangement handles the two things a mat should address isolation from the motor and the resonance caused by the stylus groove interface .I believe a TT should be as inert as possible an add no color to the sound .The ERSA mat is made of ERS paper being the motor is right under platter I thought it was a good idea to use it in this application .
Showing 7 responses by enginedr1960
I am a firm believer in TT mats . I purchased my Boston Mat 2 4 years ago to use on a SL1210 MK5 that I paid less for then the mat . I used that mat on top of the 1/8 stock rubber mat . I felt the rubber mat would help with the platter ringing issue and the Boston with the mechanical reflections from the stylus vinyl interface . This table performed very well until I upgraded to a SP10 Mk2 . The Boston is now on the SP10 with the 1/8 rubber mat and a K-Works ERSA Mat to handle EMI Issues . I stumbled on the K-Works mat by meeting Igor @ a listening session . I am familiar with ERS paper and use it . It sounded like a good idea so I tried it and it eliminated a slight amount of haze . I run a very LOMC cartridge .04 mv . It all adds up to better SQ. |
I use the technique of constrained layer dampening . I look at a TT mat as doing two jobs . Isolating the platter form motor and external vibration & isolating the stylus from reflected energy coming back to itself . The Boston material choice of pure graphite is well suited for this task . The SP10MK2 is a little lighter on the platter then the MK3 and felt it could use more mass . As for the ERSA mat it made sense to me . |
From Wikipedia Constrained-layer damping is a mechanical engineering technique for suppression of vibration. Typically a viscoelastic or other damping material, is sandwiched between two sheets of stiff materials that lack sufficient damping by themselves. The ending result is, any vibration made on either side of the constraining materials (the two stiffer materials on the sides) are trapped and evidently dissipated in the viscoelastic or middle layer.Enter your text .... The mat stack is clamped with a Michell record clamp . The Boston Mat 2 is stiff . As for VTA I made a on the fly VTA adjuster for my Ortofon arm from a helicoid lens focus ring . Thank you for you feedback |