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Re: [ARSCLIST] Mostly for laughs
On 19/10/06, Mike Richter wrote:
> Steven C. Barr(x) wrote:
>> ----- Original Message -----
>> From: "Mike Richter" <mrichter@xxxxxxx>
>>> They don't show the snake oil to lubricate the CD spindle, though.
>> During the phonograph "boom years" (mid-teens) there waa a phonograph
>> make, Vitaphone, which actually had its needle on the end of a long
>> piece of wood...whose other end connected to the diaphraghm.
>> Supposedly, the sound "mellowed" while traveling through the
> It certainly would have mellowed. Lower frequencies would see
> resonances and higher ones would be damped where the wood actually
> dissipated energy.
> In fact, there's validity behind some of the "solutions" being offered
> on that page. Many turntables are not only sources for subsonic rumble
> but also resonators at those frequencies. Unabated, they can saturate
> the amplification chain and degrade the sound. Adding weights and,
> particularly, damping in that range can improve things.
Rumble (and feedback of rumble)is a real problem when playing 78s.
I have my turntable mounted on rubber shock-absorbers designed for
electric motors, and then on a softly inflated inner tube. Those absorb
the rumble well, and the price was low.