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In Reply to: Can someone explain the science behind pointy cones? posted by mr.bear on October 8, 2017 at 10:34:25:
I suppose if you had a massive, vibration-isolated base of some sort, you might want couple to that. Perhaps the logic there is that unwanted vibrational energy in the turntable base would be sunk into a big mass.
Sources of "vibrational energy" from the turntable seem to be 1. Needle-talk (filtered, phase- shifted vibration coming from the cart) 2. Resonances excited by the soundfield and 3.) Motor noise. These are all real problems we've all had but all seem IMO dealt with best in the TT itself.
On my DD tables, my feeling has been that the heaviest plinths (for example, the cast terrazzo of those funky Kenwoods etc) handle arms with low-compliance MC carts well, since those MC's throw a lot of energy up the arm. There's some beneficial coupling going on there. The mass of a well-designed base should be sufficient to sink that vibration.
But why put electronics on cones, coupling them to even a heavy steel stand? Is it suspected that metal chassis are rattling around, excited by the soundfield? That effect must be pretty tiny. Maybe discernable for, say, a CD player. Possibly for tube gear. It looks to my wizened eye like a cure in search of a disease. There might be more marginal benefit to dampen a chassis with elastomeric pads, reducing resonant effects. Just thinkin'out loud...
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Follow Ups
- RE:What do I want to couple my TT to? - mr.bear 10/8/1712:40:04 10/8/17 (0)