I have my HW-19 all apart to re-finish and add spikes to the base. I see that great big sheet of aluminum backing the top plate, then look on the shelf and see a great big sheet of EAR SD-40 and think, hmmmm, would damping the aluminum make the sound more, or less, lively?
Getting the SD-40 back off the aluminum if I don't like it would be a PITA.
E-A-R Specialty Composites
E-A-R Specialty Composites
Getting the SD-40 back off the aluminum if I don't like it would be a PITA.
E-A-R Specialty Composites
E-A-R Specialty Composites
At least in my HW-19, the plinth is quite well-damped- tapping on the surface gives a rather tuneless "tick." At one point, I tried adding damping material but it had very little (maybe no) effect. The armboard would be a better candidate, I think.
Biggest improvement for me was to change the bearing lubricant. I dispersed some tungsten disulfide nanoparticles (from ApNano) into a mineral oil base, then, after carefully cleaning out the old oil, coated the bearing with the new lubricant. This noticeably dropped the noise floor and made things less rumble-grumble.
I've got plans and parts for a more advanced motor drive which keeps getting pushed back in my project queue...
Biggest improvement for me was to change the bearing lubricant. I dispersed some tungsten disulfide nanoparticles (from ApNano) into a mineral oil base, then, after carefully cleaning out the old oil, coated the bearing with the new lubricant. This noticeably dropped the noise floor and made things less rumble-grumble.
I've got plans and parts for a more advanced motor drive which keeps getting pushed back in my project queue...
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