Off course removing mute transistors will improve sound quality, but then you will have a "plopp" when unit is shut down (i knew this from a CD-63 tweak).
Installing a relais instead of would be the best way, but there's not much space to do this!
Installing a relais instead of would be the best way, but there's not much space to do this!
I'm thinking of doing this mod, but I would like to bypass the coupling caps entirely (want to go straight to 2 UcD400 amp modules that have their own coupling caps)
If I would "take" the signal *before* the coupling caps, but keep the caps on the board, will I have the same result than removing the caps and bypassing them with a wire?
I'd like to keep coupling caps on the normal outputs/scart/2 channel out, but add 2 special outputs without the caps coming into play.
Can this be done just by taking the signal before the caps?
I don't even understand why there are coupling caps on CD players anyway - aren't the modern D/A converters free of any DC component anyway?
Final question... in this layout, could a true balanced signal be taken, or is it simply not present?
Thanks
If I would "take" the signal *before* the coupling caps, but keep the caps on the board, will I have the same result than removing the caps and bypassing them with a wire?
I'd like to keep coupling caps on the normal outputs/scart/2 channel out, but add 2 special outputs without the caps coming into play.
Can this be done just by taking the signal before the caps?
I don't even understand why there are coupling caps on CD players anyway - aren't the modern D/A converters free of any DC component anyway?
Final question... in this layout, could a true balanced signal be taken, or is it simply not present?
Thanks
Hi,
you can't remove the coupling caps because there is about 5 V DC offset.
if you pick up the signal at the coupling caps you will "virtually" remove the muting transistors.
Kind Regards
Christian.
you can't remove the coupling caps because there is about 5 V DC offset.
if you pick up the signal at the coupling caps you will "virtually" remove the muting transistors.
Kind Regards
Christian.
Re: 2channel mod
- is the OPA627 better than the AD8620?
- if I change only the opamp, should I change condenser (capacitator) too?
Thanks a lot Davide.
Hi, I'm new on the site. I have a Pioneer DV-868 and I'd like to make the same tweak that you made in 2005 (change the opamp with AD8620):desjet said:
- is the OPA627 better than the AD8620?
- if I change only the opamp, should I change condenser (capacitator) too?
Thanks a lot Davide.
627 is single 8620 is dual opamp so 627 won't fit. change caps if you like or just add film capacitor bypasses
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