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
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:Hi,
just working on a 868 tweak.
Replaced opamps with AD8620 (good solution because of single 12V voltage supply!) and replaced bypass (100µ) and coupling caps (47µ) with Black Gate FK. Wow, big improvement!
- is the OPA627 better than the AD8620?
- if I change only the opamp, should I change condenser (capacitator) too?
Thanks a lot Davide.
Sorry but my english is quite poor. What does it mean "add film capacitor bypasses"? I need to add capacitors or I can only change the capacitors of bypass? Thanksmapelow said: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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