Thursday, August 9, 2012

Creative x-fi surround 5.1 sb1090 mod

This mod aims to improve the overall performance of this soundcard.  Capacitors are added in parallel to existing ones.  This helps improve linearity because film caps were used and transient response due to higher capacitances.

Before:

Suddenly, capacitors:

Caps are added at the V+ of the L/R opamp, Cirrus 4361 DAC, and Cirrus CS5345 ADC.

Listening to it, I can say that it sounds "faster" if that makes any sense.

Next, I might try to replace the current L/R opamp (TD1308) to the OPA2365 or completely bypass it and use it solely as a DAC.

EDIT: I don't know if it's all in my mind, but I dare say it's handing bass better now.  Before, it would start distorting a little before I had my amp at a good loud volume.  Now the bass is being handled better with no detectable distortion.

2 comments:

  1. Wich capacitors have you used? Thank you in advance.

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  2. My amplifier is also not working

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