I am finished with assembling the o2 amp but I am having problems with J1. The leads for the power jack are way too big. How did everyone overcome this?
I have already managed to break the jack by trying to crimp the leads to make them fit. Will be reordering that 1 part soon.
I am using the Kobiconn DC power Connector PCB 2.1MM
I have already managed to break the jack by trying to crimp the leads to make them fit. Will be reordering that 1 part soon.
I am using the Kobiconn DC power Connector PCB 2.1MM
Since I'm using the computer as source, is there anyway I could lower the output from the computer?
I know it's possible to just turn down the volume in Foobar2000, but that degrades the audio quality, doesn't it?
Kobiconn changed the leads a few month back, since then the two pins in the middle are to wide to fit. I use a key file to grind them down until the PCB will be revised.
You need to be careful with the pin in the center of the connector, it sometimes comes off very easy when applying to much force.
Stefan
No, it doesn't
Which of my questions have this answer?
So, you are saying that I can lower the volume in Foobar2000 without losing any dynamics or overall sound quality?
Yes, you won't loose anything, this has been discussed in the comments section of the ODAC article in NwAvGuy's blog
Ah, great. Then I wont need to do any further modifications on my O2+ODAC then
I'm a bit confused. Strictly speaking if the computer is the source, as you mentioned, then you aren't using the ODAC. In which case there is a possibility of audio degrading with lowering volume if the onboard/laptop soundcard is not running at 24bit. However, even then I've been lead to understand that this is only an issue with Windows XP sound implementation and may not affect Vista+.
In any case, to be safe it's worth checking that the soundcard is configured to 24bit. On Vista the ODAC defaults to 16bit!!!!!! So if Vista/win7 does have issues at 16bit (as well as XP) then a lot of people may not be getting what they thought they were getting.
Can any one tell me what win7 defaults to?
How can I play my tracks from the ODAC? All my tracks are on my computer, using Foobar2000 to play them and connected the ODAC+O2 via USB to my computer.
You probably are. It's terminology. Foobar is probably using the ODAC to play instead of the computer's sound card. Strictly speaking the ODAC is the source. The computer is only the source when you are using it's internal sound card. Effectively it is the soundcard (which is what the ODAC is) that it the 'source'. Foobar is just a software player that will use whichever soiund card is configured. So long as there is no 3.5mm lead going from the computer's sound output to the O2 then foobar must be using the ODAC. (The O2 'in' socket gets preference/priority over the ODAC.)
My O2+Odac did the same yesterday, but then my phone was ~10cm from the device. If I have the phone if my left pocket and the amp on the desktop on my right I have never heard it pick up any noise.
