I just started populating my kit and done with power supply side...
Its measuring -12.87 and +12.16 measured at -V-0+V (yet to short j4 and j5),am using 12-0-12, 1A transfo. I have TPS regs presoldered on the pcb.
Is this normal? am not sure why -ve and +ve voltages are varrying... Do i need to check anything or continue building??
Its measuring -12.87 and +12.16 measured at -V-0+V (yet to short j4 and j5),am using 12-0-12, 1A transfo. I have TPS regs presoldered on the pcb.
Is this normal? am not sure why -ve and +ve voltages are varrying... Do i need to check anything or continue building??
If you hang a transformer on the output of the 9018k2m, it won't be doing I/V, it'll be running pure voltage mode. Your best bet if you want to use a transformer is to do I/V via good opamps (I'm using ADA4898) and use these to feed the transformers.
For your other question, the k2m variant contains 2 DACs, rather than 8 as with the 9018, so I'd estimate output Z as 4 x 195R.
Hope this helps.
I have populated the board and used REG1117 and ADP151 for regs.
The voltages measured are 5v and 3.3v at respective places, i have tested each of them individually before soldering ferrite chips...
I am not getting any audio as output. LM4562s are becoming little warm when i tried to use bluray output thru spdif1. ( except IC5 all other lm4562 are thru hole with socket)
The switch S2, 1 is in on and 2,3,4,5 are off position hope this is correct.
I have BDP-450 bluray player which has digital coaxial out, am connecting that output to spdif input1. Does this work this way? I have no other option at the moment like I2S/DSD etc.,
How others got the spdif1 working? any suggestions to debug?
The voltages measured are 5v and 3.3v at respective places, i have tested each of them individually before soldering ferrite chips...
I am not getting any audio as output. LM4562s are becoming little warm when i tried to use bluray output thru spdif1. ( except IC5 all other lm4562 are thru hole with socket)
The switch S2, 1 is in on and 2,3,4,5 are off position hope this is correct.
I have BDP-450 bluray player which has digital coaxial out, am connecting that output to spdif input1. Does this work this way? I have no other option at the moment like I2S/DSD etc.,
How others got the spdif1 working? any suggestions to debug?
hvnt soldered led.. will do that and let you know..but R18 and R19 are 20ohm at the moment,
in the schematic they are 390ohm with leds...
do i need to change the resistors to 390 if i want to keep led? or i can solder led with r18 and r19 being 20ohm?
in the schematic they are 390ohm with leds...
do i need to change the resistors to 390 if i want to keep led? or i can solder led with r18 and r19 being 20ohm?
@atupi I hv soldered leds and changed r18, r19 to 390ohm
AM is glowing when powered and Lock LED not glowing.
AM is glowing when powered and Lock LED not glowing.
Thanks for your help. I also found some related discussion on 9018 BII with transformer output.
http://www.diyaudio.com/forums/twisted-pear/164294-buffalo-ii-transformers-19.html#post2698382
Looks like may also work on the 9018M2k too.
It's the resistor providing I/V here, and you'll need to scale it upward for the reduced current output of the k2m, or provide extra voltage gain afterwards.
Hi,
I finally got time and installed a pair of UTC A20 line output transformer to the Pin 9,10,13,14 for -R+R-L+L- replacing all three opamp, the result is well worth it, the highs are smooth, mid has enough body, and the sound stage is big. I didn't change anything on the SPDIF input, I have no problem locking with signal coming from a Philip DVD player and the Shigalone MKII and of course the Shigalone MKII is much better.
I am quite satisfy or happy with the current configuration, the sound is very nice and I had spet 5 hours listening today right after hocking up the UTC, but I try using the Tango 600:600 input transformer, more on I2S option and the ardino control part.
I finally got time and installed a pair of UTC A20 line output transformer to the Pin 9,10,13,14 for -R+R-L+L- replacing all three opamp, the result is well worth it, the highs are smooth, mid has enough body, and the sound stage is big. I didn't change anything on the SPDIF input, I have no problem locking with signal coming from a Philip DVD player and the Shigalone MKII and of course the Shigalone MKII is much better.
I am quite satisfy or happy with the current configuration, the sound is very nice and I had spet 5 hours listening today right after hocking up the UTC, but I try using the Tango 600:600 input transformer, more on I2S option and the ardino control part.
The sound I feel is getting is very good so far, once it is staablized then I will start on my second one. Listeded to 4 CDs for 5 hours today.
since I haven't fix the fryed 4700, I am using the external PS from DIYINHK to provide 15+ and -15V and bypassing the onboard one. will fix the onboard one later.
since I haven't fix the fryed 4700, I am using the external PS from DIYINHK to provide 15+ and -15V and bypassing the onboard one. will fix the onboard one later.
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Hi,
I finally got time and installed a pair of UTC A20 line output transformer to the Pin 9,10,13,14 for -R+R-L+L- replacing all three opamp, the result is well worth it, the highs are smooth, mid has enough body, and the sound stage is big. I didn't change anything on the SPDIF input, I have no problem locking with signal coming from a Philip DVD player and the Shigalone MKII and of course the Shigalone MKII is much better.
I am quite satisfy or happy with the current configuration, the sound is very nice and I had spet 5 hours listening today right after hocking up the UTC, but I try using the Tango 600:600 input transformer, more on I2S option and the ardino control part.
Great!!
Nice syklab 🙂.
Everything syllable should have pointed out or rather corrected in the first place solved by now? I'll give it a go most due to curiosity and it will tick of another item from the todo list.
Now will this show up amongst the devices in windows capable of everything an es9018 is capable of?
Regards
Everything syllable should have pointed out or rather corrected in the first place solved by now? I'll give it a go most due to curiosity and it will tick of another item from the todo list.
Now will this show up amongst the devices in windows capable of everything an es9018 is capable of?
Regards
This is my almost finished DAC discussed in this thread. I added some more preregulators and i'm trying to find a good grounding scheme for everything inside the case.
The most annoying problem is when i'm electrostatically charged and discharging on dac case my microcontroller goes crazy and display shows
hieroglyphes.
I will go in details with my final configuration if there are still interested people in this subject.
The most annoying problem is when i'm electrostatically charged and discharging on dac case my microcontroller goes crazy and display shows
hieroglyphes.
I will go in details with my final configuration if there are still interested people in this subject.
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