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UCD180 balanced via soundcard
UCD180 balanced via soundcard
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Old 16th December 2007, 06:36 PM   #1
mlihl is offline mlihl
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Question UCD180 balanced via soundcard

Hi,

I plan to build UCD180 monoblocks that would be driven balanced via an RME or ESI Julia soundcard. Anyone tried this before?

I want to avoid a preamp and control volume only via software.

Regards,

Mike
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Old 16th December 2007, 06:57 PM   #2
BWRX is offline BWRX  United States
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Surely someone has, but even if they don't chime in you should be fine.
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Old 17th December 2007, 02:13 PM   #3
lucpes is offline lucpes  Romania
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Used an EMU 1212m for this purpose, works like a charm...
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We should no more let numbers define audio quality than we would let chemical analysis be the arbiter of fine wines. Measurements can provide a measure of insight, but are no substitute for human judgment. Nelson Pass
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Old 17th December 2007, 02:17 PM   #4
mlihl is offline mlihl
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How was the sound via the 1212M?
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Old 17th December 2007, 02:43 PM   #5
PigletsDad is offline PigletsDad  United Kingdom
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The downside of this approach is that you reduce DAC resolution at anything other than full volume. To take any extreme example, say you want or need to listen at -90dB. This corresponds to losing 15bits of resolution. On a 16bit sound card, you are down to 1 bit conversion, and even a 24bit one only has 9bits active. Of course, this should be very quite, so may be it is not a problem.

At the very least, I would want to set the gains pretty carefully, so that full gain corresponds to the loudest you want to listen, and so the amount of resolution loss at normal levels is minimised.
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Old 18th December 2007, 10:37 PM   #6
MikeHunt79 is offline MikeHunt79  United Kingdom
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Quote:
Originally posted by PigletsDad
The downside of this approach is that you reduce DAC resolution at anything other than full volume. To take any extreme example, say you want or need to listen at -90dB. This corresponds to losing 15bits of resolution. On a 16bit sound card, you are down to 1 bit conversion, and even a 24bit one only has 9bits active. Of course, this should be very quite, so may be it is not a problem.

At the very least, I would want to set the gains pretty carefully, so that full gain corresponds to the loudest you want to listen, and so the amount of resolution loss at normal levels is minimised.
Simply buy a nice quad gang pot for volume control - problem solved.
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