Hello,
I m doing a diy circuit to make a battery power supply for my portable cdp used as source for my home system.
The question is about the differences in quality sound I can obtain with different battery technologies....
A well reputed CD tweaker told me several years ago that traditional lead acid ones sounded better than gel ones...
Lastly somebody told me that he had very good results with lithium polymer ones...
Did you have advice about it?
Thank you: David
I m doing a diy circuit to make a battery power supply for my portable cdp used as source for my home system.
The question is about the differences in quality sound I can obtain with different battery technologies....
A well reputed CD tweaker told me several years ago that traditional lead acid ones sounded better than gel ones...
Lastly somebody told me that he had very good results with lithium polymer ones...
Did you have advice about it?
Thank you: David
Voltage is voltage, current is current, power is power.
No difference in 'sound quality' for the same voltage/current.
No difference in 'sound quality' for the same voltage/current.
It is common to need a bypass capacitor across a battery supply as the drive impedance can differ.
I guess we're dealing with ~3 Vdc? Then I'd say 470 µF ... 4700 µF, standard electrolytic or polymer, shouldn't be too critical really.
I would consult the schematic of the unit to see whether there's a DC/DC converter in there...
Why one would want to use a Discman as a stationary player is beyond me, but whatever. You get all the downsides of low voltage operation and an integrated headphone amplifier IC (not to mention a minimal user interface) but none of the benefits AFAICT.
I would consult the schematic of the unit to see whether there's a DC/DC converter in there...
Why one would want to use a Discman as a stationary player is beyond me, but whatever. You get all the downsides of low voltage operation and an integrated headphone amplifier IC (not to mention a minimal user interface) but none of the benefits AFAICT.
Gerhard Hoffman did an extensive survey on battery noise:http://www.hoffmann-hochfrequenz.de/downloads/NoiseMeasurementsOnChemicalBatteries.pdf
Different batteries with different impedances -- it shouldn't matter much if using operational amplifiers with good PSRR.
Different batteries with different impedances -- it shouldn't matter much if using operational amplifiers with good PSRR.