Unbalanced miniDSP as 2ch digital preamplifier? - diyAudio
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Old 3rd September 2011, 11:29 AM   #1
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Default Unbalanced miniDSP as 2ch digital preamplifier?

Looking at the 2 way advanced crossover app it appears that you could bypass all crossover filters and simply invert the polarity of one pair of outputs, effectively giving you a 1.8Vrms balanced output per channel. Adding the 10k pot (for digital volume control) and potentially a pair of isolating transformers on the balanced outputs (bypassing coupling caps etc.) would make a (theoretically) nice digital preamp.

Daft idea or worth trying?
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Old 3rd September 2011, 01:44 PM   #2
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Balanced output has cold and hot wire. Cold wire gets often connected to ground in receiving equipment, so beware making both wires hot.

Doesn't MiniDSP also have a balanced option?
An FFT of my life would show a couple of peaks and some low level harmonics, but mainly random noise.
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