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Post by jphoward on Mar 22, 2009 12:16:48 GMT
The DAC on my Squeezebox Duet leaves some room for improvement, so it would be nice to put a DAC in the SCHA case. Has anyone got any good experiences of suitable kits? I haven't yet bought a case for my 2nd SCHA, so I'm quite flexible in terms of size. In terms of budget, I don't mind spending a reasonable amount if the sound quality will be worth it. First, here's what I've found in my brief googling: there's the 'Cheapo DAC Project' thread on the DIY forum, but that's probably a bit advanced for me, since the discussion about how to set it up right still seems to be ongoing. Then there's the DacKit, which has been well reviewed, but seems to be a bit old. There's the DIY DAC kit from TentLabs, and upgraded DacKits from AudioNote. I'd rather get something available locally (in Melbourne, or at least in Australia) if possible. It would also be nice if it was something other folks here on RG have experience with, so that I can get help tuning if required. Any suggestions?...
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Post by jphoward on Mar 23, 2009 23:36:48 GMT
Sorry for the dumb question, but... when I do add a DAC to my SCHA, how do I power it? Can I use the same transformer? If so, how would I wire it up - do I just split the output leads?
If not - can I use the same IEC socket, and connect a 2nd transformer to it?
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Post by Deleted on Mar 24, 2009 0:54:39 GMT
Sorry for the dumb question, but... when I do add a DAC to my SCHA, how do I power it? Can I use the same transformer? If so, how would I wire it up - do I just split the output leads? If not - can I use the same IEC socket, and connect a 2nd transformer to it? Jeremy No, you can't use the same transformer as voltage requirements for the DAC will almost certainly be very different to that of the SC HA,which is typically +-15V DC. You can only power it directly from the same I.E.C. socket if the IEC socket is of the type with an inbuilt on/off switch. Otherwise, the new transformer would need to be connected via the normal /additional mains on/off switch. Alex
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Post by jphoward on Mar 24, 2009 1:51:33 GMT
You can only power it directly from the same I.E.C. socket if the IEC socket is of the type with an inbuilt on/off switch. Otherwise, the new transformer would need to be connected via the normal /additional mains on/off switch. Thanks for the info Alex - I'll try and find one of those sockets then. Once I do, I simply split the live and neutral into 2 leads each, and run to each transformer? Should I split the earth as well? In terms of transformer placement - is there any reason not to stack the transformers on top of each other, or place them side by side?
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Post by Deleted on Mar 24, 2009 6:39:26 GMT
You can only power it directly from the same I.E.C. socket if the IEC socket is of the type with an inbuilt on/off switch. Otherwise, the new transformer would need to be connected via the normal /additional mains on/off switch. Thanks for the info Alex - I'll try and find one of those sockets then. Once I do, I simply split the live and neutral into 2 leads each, and run to each transformer? Should I split the earth as well? In terms of transformer placement - is there any reason not to stack the transformers on top of each other, or place them side by side? jeremy You shouldn't need to split the earth as well. It would be there mainly as protection. I would try and space the transformers as far apart as practical. If you run short of room, you could consider standing PSU boards,and perhaps the DAC PCB on their sides, using small L shaped brackets to support them. Are you getting in too deep at this stage? Alex
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Post by jphoward on Mar 24, 2009 7:37:30 GMT
Are you getting in too deep at this stage? Indubitably. (I used to spend all my spare time working on software, but this analogue audio stuff is a fun change.)
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