Archive for February, 2008

X2 – Ver 3

Wednesday, February 13th, 2008

This is not a real Nelson Pass X2 as the output use transistors.  This is actually the ver 3 of Cheffdegaar in diyaudio post.

I do not like the sound and may be in future I shall build NP original X2 again.

UGS_V3a circuit

PCM1702 to PCM63 Converter BD

Sunday, February 10th, 2008

This board is designed to use PCM1702 DAC chip (smd type) to replace PCM63 in D1V3.  There is one fault on the pad size of SOIC for PCM1702 (too wide).  Thus soldering of the DAC chip is quite difficult but the board is still able to be used.

Circuit