As current RC filter is no longer suit me, I decided to improve it.
First, original AY chip has 0-1 Volts on outputs, but emulator has 0-4.5 volts, so the circuit needs voltage divider.
Second, I decided to swap low-pass and high-pass filters.
For three-channel versions filter is similar, or by mixing.
More simple version is also good
It is enough to use LowPass filter.
It works well and recommended instead of previous filters. You may add 1-10uF capacitors to filter output