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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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Vinyl Asylum Welcome Licorice Pizza (LP) lovers! Setup guides and Vinyl FAQ. |
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In Reply to: MM vs MC (not Spy vs Spy) posted by tlea on August 5, 2005 at 23:41:55:
>> Of course I can experiment with the settings and decide on what sounds best, as another poster suggested.Yep
>> But in addition to that I am interested in knowing more about what are the characteristics of and differences in the impedence loading settings, in terms of sound perception or physics or both.
Impedance is the resistance of a circuit to the flow of AC, and it is frequency dependent. Therefore, changing the impedance of a phono circuit changes the frequency response curve of the circuit.
Lowering the impedance allows lower frequencies to flow more easily and impairs higher frequencies. Raising the impedance does the opposite. Your ears will confirm this if you simply try a few different settings.
The effects vary on a logarithmic scale (I think, help me out here John). At any rate, a change from (say) 100 to 200 ohms would be much more audible than a change from (say) 1,000 to 1,100 ohms. A change from 47,000 to 47,100 ohms would almost certainly be inaudible. This is why your phono stage's impedance options are spaced as they are.
>> Is there any danger in using the higher settings?
No.
>> Any harm in switching setings while the music is playing?
If it's an external switch, no problem. If it's an internal dip switch or requires resistor swapping, I'd power down first.
__________
"Do not meddle in the affairs of wizards, for they are subtle and quick to anger." - JRRT
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Follow Ups
- Re: MM vs MC (not Spy vs Spy) - Doug Deacon 08:56:43 08/06/05 (1)
- Very helpful, thanks (nt) - tlea 09:03:45 08/06/05 (0)
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