I'd be more interested in seeing a FFT plot of the harmonics rather than the absolute THD number.
Also, LSK189 is a fairly expensive part to use for a CCS. Is there something else more affordable that can be substituted?
I built this last year for my SX3700.
2 changes are 47k resistors instead of constant current and IRF240 and IRF9140 biased at 6v. I also added 1n4148 on vas to fix clipping . Sounds great good to know distortion is this low. I am using 9.1k// 1k feedback ratio gain of 10.1 .
2 changes are 47k resistors instead of constant current and IRF240 and IRF9140 biased at 6v. I also added 1n4148 on vas to fix clipping . Sounds great good to know distortion is this low. I am using 9.1k// 1k feedback ratio gain of 10.1 .
