What are ideal passive shunt and series L pad resistances to match today's sources, if we could achieve them, ... without the imposed constraint of a potentiometer ?
Your question sounds ambiguous or open top several interpretation.
Do you mean "source " as in CD player /record deck or do you mean "source " as in --source of music in relation to the human ear - IE- a loudspeaker ?
If a loudspeaker then this simple explanation is relevant to your question ---or not ?
L-PADS
and you then mean ---without the potentiometer as illustrated .
Do you mean "source " as in CD player /record deck or do you mean "source " as in --source of music in relation to the human ear - IE- a loudspeaker ?
If a loudspeaker then this simple explanation is relevant to your question ---or not ?
L-PADS
and you then mean ---without the potentiometer as illustrated .
"Without the imposed constraint of a potentiometer "-- virtual volume control software is pretty sophisticated now but the other section on that potentiometer link relates to impedance in relation to frequency , I have found a Paper relating to various University professors on the subject of virtual impedance matching.
Reactive power matching etc .
Reactive power matching etc .
Yes, that is where today's sources like CD players DVD players & streaming, requiring passive attenuation sound best.
We can see the potentiometer that most users experience, is incorrect, it suffers from trying to apply a comfortable listening range - balancing this against being able to silence volume.
and failing to be a comfortable device to use
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It's actually a fun and surprisingly not-simple math problem: Figure out how to use seven relays and as many resistors as you please, to build a relay-switched passive attenuator whose 27 = 128 possible settings, are
Of course you probably want the front panel LCD display to show positive numbers rather than negative dB's. People expect that "50" should be louder than "10" !!
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0 dB, -1 dB, -2 dB, -3 dB, -4 dB, ..., -125 dB, -126 dB, -127 dB
Of course you probably want the front panel LCD display to show positive numbers rather than negative dB's. People expect that "50" should be louder than "10" !!
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