Hi, I'm rebuilding a NAD 1020 series 20 preamp.
When I look at the web available service manuals, I don't see this filter. All the rest in the audio path is the same as in the schematics I can find.
This HP filter consists of C307 1uF and R321 27k and sits in the audiopath between the output of the amp section and the phones PCB R301. See image below.
I haven't finished the rebuild yet, but I'm already very interested about your thoughts on dropping, modifying or keeping this filter.
Thank you!
Chris
When I look at the web available service manuals, I don't see this filter. All the rest in the audio path is the same as in the schematics I can find.
This HP filter consists of C307 1uF and R321 27k and sits in the audiopath between the output of the amp section and the phones PCB R301. See image below.
I haven't finished the rebuild yet, but I'm already very interested about your thoughts on dropping, modifying or keeping this filter.
Thank you!
Chris