Stupid question: What's the difference...

2022 The WAM show

Smokestack

Wammer
Wammer
Oct 11, 2018
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Let's just conclude that if everything rattles about and rings like buggery...

   ...it'll sound like sh*te .

 

Smokestack

Wammer
Wammer
Oct 11, 2018
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Just to drop a lion in amongst the pigeons, but differences in turntables can be heard on headphones.
Of course they can . With a competently designed turntable in sensible domestic  listening conditions "acoustic feedback" is not a significant artefact.

..and to  bring this saga full circle .

The accepted wisdom in the old days was that floating  sub-chassis turntables were a good idea and often performed well  because  they better resisted acoustic feedback.

The more important performance  feature of a floating sub-chassis is,  in fact,  that it helps a belt drive turntable to revolve consistently at the right speed ! :D

 

Jazid

Wammer
Wammer Plus
Oct 13, 2009
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London
AKA
James
HiFi Trade?
  1. No
The more important performance  feature of a floating sub-chassis is,  in fact,  that it helps a belt drive turntable to revolve consistently at the right speed ! :D
How does it do this?

Personally I hate floating t/ts just because they make me nervous - all that bouncing around. I prefer mass and damping to achieve the same thing, purely from a stylus safety perspective - nothing to do with SQ :)

 

Muckplaster

Wammer
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Jul 2, 2013
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Stoke Trister
AKA
Edward Harris
HiFi Trade?
  1. No
Let's just conclude that if everything rattles about and rings like buggery...

   ...it'll sound like sh*te .
Exactly, and that's what many direct drive turntables used to do. They were microphonic as a result of the lack of suspension and suffered from acoustic feedback if the speakers were close by as a result of that. Even if there was no actual howl round the sound would be impaired as a result.

 

Muckplaster

Wammer
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Jul 2, 2013
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Stoke Trister
AKA
Edward Harris
HiFi Trade?
  1. No
No. It's obviously in yours.

Microphony is not feedback. The terms are completely different.

Feedback is, as it suggests, a process where the input is dervived from the output. In this case, an undesirable 'looping' process.

Resonance has already been explained above.
I owe you an apology. I should have said microphony of the deck causes acoustic feedback.