74AHCT164D is not problem. Can you swap AD1862 chips between each other? If the same channel will sound, you will find that both ad1862 chips are good. Do the same with opAmps.
Hello Miro,I reached the limit of 10000 characters in the first post and I am unable to continue with further editing.
There will be an article functionality: https://www.diyaudio.com/community/...limited-to-10k-characters.380937/post-6888196
For now, this link is holding the updated first post:
https://electrodac.blogspot.com/p/dac-ad1862-almost-tht-i2s-input-nos-r.html
Excellent effort on editing the first post. The electrodac link looks great.
Also, could you please comment on adding Bluetooth to your 1862 dac design?
hope this holiday season you and family are safe and happy
yes, they are)@Traktorist3d
Could I deduce we use mmbt3904 and 3906 for your dual psu q1 and q2 and q1" q2"?
Thankyou
Colleagues, I apologize for not immediately guessing, to transfer the output stabilizers under the DAC from Miro, I did it as in the photo. But if anyone else will order the boards, here's a more correct option. And do not forget to read a note from the developer, with a recommendation for capacitors.
There are also boards for a different, also very high-quality shunt-regulator, from Nazar, if I need to post it, but I also need to tweak the pot DAC boards from Miro
There are also boards for a different, also very high-quality shunt-regulator, from Nazar, if I need to post it, but I also need to tweak the pot DAC boards from Miro
Iirc I perhaps talked here about Nazaar fast reg LM317 based...simple and elegant design...fast transcient, could be perfect with styren radial caps 0,1 uF from Lcr at Farnell shop or red Mkp from wima or blue Ero Roe for smoother sound.
Thanks fornthe gerber...pretty little nice pcb.
Thanks fornthe gerber...pretty little nice pcb.
Sparkfun looks like a good site. I’ll get some of the adapters and their headers. Not sure if the pins are machined , description doesn’t say
Can you solder a socket to the dac pcb in the opamp location to make it easier to swap out opamps. Using a soic to dip adapter soldered to header pins. Then just change the whole assembly out to “roll” a different opamp? Is this advisable?
This is what I did. There is a photo a few pages backSparkfun looks like a good site. I’ll get some of the adapters and their headers. Not sure if the pins are machined , description doesn’t say
Can you solder a socket to the dac pcb in the opamp location to make it easier to swap out opamps. Using a soic to dip adapter soldered to header pins. Then just change the whole assembly out to “roll” a different opamp? Is this advisable?
Yup, just checked it out
Just solder up a bunch of opamps and plug and play.
ordered some sockets
Thanks
Just solder up a bunch of opamps and plug and play.
ordered some sockets
Thanks
Tony,Hey, missed you all
I'm nearly finished with my build. I've got my op amps on tallish standoffs because that's what fit together. Is 17mm high enough to cause parasitic problems and oscillation, or do you think I'm ok?
View attachment 1003659
I can’t find lt3015 opamp in an smd package
What did you use or where did you get them?
Thanks
Most parts for my 1862 dac have been ordered. One of the last details is the transformer. I’m looking for a high quality 115vac 30w/2x12 R core preferably made in the USA. I’m not stuck on a USA supplier but want a high quality piece. What have you folks used and recommend?
thanks
thanks
I was a stinker and did not follow the advice that was given to me, I'm using Antek 0512 transformers and to me they sound great. Inexpensive too.
Like I said, I am interested in trying R cores. Will probably built up a second version of this DAC a little differently
Like I said, I am interested in trying R cores. Will probably built up a second version of this DAC a little differently
I’ve yet to find a USA based supplier of R core transformers. Shipping really takes it’s toll. I did find a place Mableaudio.com But I’m not sure if they provide a quality component
Sounding great is what it should be, so you made the right decision.I was a stinker and did not follow the advice that was given to me, I'm using Antek 0512 transformers and to me they sound great. Inexpensive too.
Like I said, I am interested in trying R cores. Will probably built up a second version of this DAC a little differently
I'm using an R-Core transform for the , but will be using a Antek transformer for Pedja Rogic's Discrete Diamond Non-Feedback I/V stage. I'm sure that I would not hear a difference between transformers.
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