Hello,
I am currently making a 2.1 system that is self-powered. I have built a previous system with class AB amplifiers, which have awesome power supply ripple rejection, however class D is another story. Right now I have a 200VA transformer full-bridge rectified to about 10uF of capacitance and I'm still getting about 60Hz hum at the speaker output. I know this is because of the switching properties of class d.
My question would be, if I take the v+ (the amp is single-supply tpa3118d2) going to the amp-chip and run about 4-7 lm317's in parallel to the chip from my ps and drop a little over the minimum voltage for the lm317 would my noise problem be solved a little?
Would also adding a bank of caps on the other side of the lm317 help too?
Thanks!
I am currently making a 2.1 system that is self-powered. I have built a previous system with class AB amplifiers, which have awesome power supply ripple rejection, however class D is another story. Right now I have a 200VA transformer full-bridge rectified to about 10uF of capacitance and I'm still getting about 60Hz hum at the speaker output. I know this is because of the switching properties of class d.
My question would be, if I take the v+ (the amp is single-supply tpa3118d2) going to the amp-chip and run about 4-7 lm317's in parallel to the chip from my ps and drop a little over the minimum voltage for the lm317 would my noise problem be solved a little?
Would also adding a bank of caps on the other side of the lm317 help too?
Thanks!