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76.120.165.53
Go figure. These cheap little tweaks have noticeably increased the noise floor so music is now quieter, more detailed, more realistic and fuller and livlier in a good way. I never used to be able to turn my amp up past 9:00 without it being too loud and now, I can safely turn it up to 11:00 with no distortion or overload.
Hubba, hubba.
Follow Ups:
Isn't anything sacred anymore? These things are screwed on tight. What vibrations can there possibly be??
Edits: 08/09/11
There is a UK manufacturer who demonstrates the vibration transmission of cables. The test consists of knocking one end of the cable, say a spade lug, and listening to the impulse at the other end with a stethoscope. I think the manufacturer is Vertex AQ. They demonstrate the abilities of their cable which includes a box of vibration damping or absorbing materials to reduce this effect. Now consider if one end of a speaker cable is attached to a vibrating speaker...
Now given that an electrical field will induce a charge in a conductor which cuts across it, say the metal chassis of a power amp,or internal hookup wire, and the potential for vibration to modulate this, it is possible to theorise on how vibration affects sound, quite apart from any microphonic components being excited.
Consider the built-in vibration damping design of a WBT spade:
-snip-
The key of the superb quality of this spade lies in the patented Sandwich design of its contact fork: Elastomer oscillation dampers eliminate airborne noise and mechanical vibrations as well as magnetostrictions. This ensures almost total suppression of contact microphonics, and there is no interfering ancillary noise. The fracture resistance of the connection is improved at the same time. The sandwich design of the contact forks (sandwich spades) with elastomer inserted in a steel cap generates high and uniform contact pressure while minimising transition resistance.
-snip-
I've been working for some time now with various Herbie's Audio Lab dBNeutralizer pads, and find that in some cases (but certainly not all) the performance of the pads can benefit from the addition of a thin and more compliant material used as interface placed between the very firm dBNeutralizer pads and the device that they support. Herbie's Audio Lab grungebuster Dots, thin foamed neoprene pads, and thin felt pads are some compliant interfaces to consider and are quite inexpensive products to experiment with for system tuning purposes.For example, the aluminum alloy feet of the power distributor chassis shown in the above photos come with mundane thin foamed neoprene pads placed within shallow milled recesses. When Herbie's Audio Lab dBNeutralizer base pads (Herbie's Hush Puckies Bases) are affixed to the stock foamed neoprene pads, a substantial amount of desirable vibration control damping is apparent to my ear. When the dBNeutralizer pads are implemented without the use of the stock thin foamed neoprene pads in place, the sonic signature sounds just a wee bit too overdamped, to my ear. A better option would likely be to replace the foamed neoprene pads with 7/8" diameter Herbie's Audio Lab Extra-Thick grungebuster Dots to use with the dBNeutralizer pads (which I might give a try sometime down the audiophile road).
Happy listening ;-D
Edits: 08/06/11 08/06/11
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