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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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Propeller Head Plaza Technical and scientific discussion of amps, cables and other topics. |
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In Reply to: Tweaks are audible, but may not be substantiated... posted by cheap-Jack on April 11, 2007 at 08:33:14:
Hi“FYI, I am subjective, rationally.
Like a $500 wooden knob as claimed by its vendor can improve the sound bigtime. One may instantly dismiss it as snake oils.
But if one takes a second thought. The mass of the knob can damp out the peaky resonances of the rotating shaft of the volume control
wiper, resulting sonic improvement.
At least there is some remote scientific rationing behind it, yet to be proven by the resultant resonance spectrum analysis or otherwise.â€Logical an all but examine how the device in question actually works. Most potentiometers already have silicone damping in them to make them “feel nice†but unless you have a dirty pot, you can tap on it with your finger and not hear anything in the sound coming out. This is important as simply tapping on it produces G forces millions of times larger than any airborne sound would impose. Usually, Tubes and mcrophones etc are about the only things in audio that are micro phonic (where mechanical vibration has an effect on the signal).
Lastly, from a acoustic / mechanical point of view, simply substituting a wood mass in place of a plastic mass on the end of the shaft in it self (being a mass) could have no effect on Q, resistance to motion is damping, this is what reduces “Qâ€.
Sadly also, a spectrum analysis would not show any difference, there is no mechanism for the improvement to take place. Also, a wood knob vs plastic would have no change in Q if you were to vibration test the assembly. In my opinion, your first reflex was correct, this is snake oil in the shape of a knob with an exotic, slightly plausible explanation..
Best,
Tom
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Follow Ups
- when Tweaks are audible, they cant be substantiated... - tomservo 11:33:20 04/11/07 (1)
- But if a female audiophile you knew decided to buy fancy expensive knobs for her gear ... - Richard BassNut Greene 08:04:19 04/12/07 (0)
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