I was looking at the PSRR of LM3875 and I thought that it would make a perfect sense to use 2 ore 3 1000uF caps in parallel to the V- and only one 1000uF cap for V+ of the PS. This way I'd get better LF and HF filtering and thus compensate for the PSRR differences. Should have a positive effect (at least in theory).
Has anyone tried that?
/Greg
Has anyone tried that?
/Greg
Carlos,
No, I didn't think about that. Very good point. Though, if it really makes things better and it's worth the trouble you may have a relay that disconnects the speakers as soon as you power-off the amp.
Considering the above problem, it makes more sense to just increase both V- and V+ caps at the same time.
/Greg
No, I didn't think about that. Very good point. Though, if it really makes things better and it's worth the trouble you may have a relay that disconnects the speakers as soon as you power-off the amp.
Considering the above problem, it makes more sense to just increase both V- and V+ caps at the same time.
/Greg
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