Congratulations grandpa Niamex J
If you do not remove R25/R26, I think that you are still receiving the OpAmp output signal from pins 9 and 10, unless you cut the PCB track or bend the pins 9 and 10 of the IC.
Thanks everyone for a great thread.
Got some more parts today. Installed the MCaps, Clarity and changed c6 fron 47uf to 100uf for added bass.
I did this with the more afordable caps and so far with only half an hour listening I'm impressed. Hopefully will only get better.
I think I'm finished for now though.
Pic under hood.
I also got a MCap for the 0.22uf and might try that after a while instead of the clarity cap.(It is quite large though) But right now it is sounding great.
That clarity cap 0.22uF x 630v yes? Can any body please just confirm that for me.
I did an order with Hifi Collective as follows. I aready did some other mods before as well.
|1 x||(SUP8-030) - 0.22uF 1200V M Cap Supreme polypropylene Caps||£6.77|
|1 x||(CCESA-030)- 0.22uF 630Vdc Claritycap ESA Range polypropylene||£4.40|
|2 x||(SUP8-120) - 2.2uF 600V M Cap Supreme polypropylene Caps||£24.86|
|1 x||NFG-790 - 100uF 25V FG Nichicon type, UFG1E101MPM||£0.50|
|1 x||NKZ-110 - 100uF 25V Nichicon KZ type, UKZ1E101MPM||£0.33|
I had intentions of trying both the ClarityCap and MCap. Installed the clarityCap first and liked what I heard so kept tht one in.
The 2 100uF caps I ordered were to get a matching one for the bass enhancement change. Not sure which one I actually used but it was the same brand/type as the 47uF it replaced.
I never noticed too much of the changes I did, as they were all over a time period and my audio memory is not very good. Also I was changing between many brands of speakers at the time.
I ended up selling my modded Havana to someone in another forum who already owned a stock Havana. Here was his coments back to me, once he recieved it.
"DAC is here safe and sound. 5 minutes of auditioning. WOW !!!. no small difference. I'll give you a more decent report when I work out how it is so different. First impression is that my much loved Havana sounds like its's playing through a wet sock compared to the Dolly Parton mods."
"The biggest difference between the two is increased resolution across the frequency spectrum- whether that is because of a reduction of noise floor or whatever.
The sound stage is wider. I'll take my time to work out as well as I can what else is going on."
Thanks for that, i have been putting together a parts list now for around four months the hardest things to track down where the HT Jupiter caps round 2.2uf 600v but i have now done that after going around the world.
I posted a photo of the original BB PCM56-K chips on the page 115 this thread... This photo was taken by me!
Now someone is using it selling pcm56p-K chips on ebay. Beware I think these are another fakes from China....
this is my picture:
Genuine BB ones sound different.
Maybe they are selling genuine chips - who knows, but why do they use my private photo?
I bet these ones they are selling have different print or don't have print at all. :)