Hello,
ok, I'm ready to change the stock output section on my pioneer DV-440 and need to guidance.
context:
1 PCM1742KE dac.
o/p signal goes to a series cap (dc blocker I guess)47uf/16 then 2.2k then a SMD dual op/amp BA4560F which implements a LPF with 1 op amp per channel. After this another series cap and 2 series 470R resistors. Between these 2 Rs the mute transitor taps onto the line.
Here is where I need your input.
1. forget the whole op/amp filter stage and pick-off signal after the first cap. Replace cap with something better.
2. DC couple this last stage to be able to short out the two series caps. keep same op amps.
3. same as 2 but replace the opamps with some BB or AD amps (which ones?).
4. remove one or both of the last series R? are these to load the output of amps and by removing them I'm messing with the load + interconnect?
5. remove the mute transitor tap point.
Thanks
paba
5.
ok, I'm ready to change the stock output section on my pioneer DV-440 and need to guidance.
context:
1 PCM1742KE dac.
o/p signal goes to a series cap (dc blocker I guess)47uf/16 then 2.2k then a SMD dual op/amp BA4560F which implements a LPF with 1 op amp per channel. After this another series cap and 2 series 470R resistors. Between these 2 Rs the mute transitor taps onto the line.
Here is where I need your input.
1. forget the whole op/amp filter stage and pick-off signal after the first cap. Replace cap with something better.
2. DC couple this last stage to be able to short out the two series caps. keep same op amps.
3. same as 2 but replace the opamps with some BB or AD amps (which ones?).
4. remove one or both of the last series R? are these to load the output of amps and by removing them I'm messing with the load + interconnect?
5. remove the mute transitor tap point.
Thanks
paba
5.