You know ... I bought a soldering iron today and started testing the removal process on some OPAMPS on an old SB Live 5.1 card I have ... and for the life of me, after I heated up the existing stock solder on the Live's OPAMPS, I couldn't get the dang legs to seperate from the board! Do you have any suggestions?
- beginner solderer, eh? DO NOT PULL or TWIST on opamp leads! Pads/traces rip away easily!
X-FI Op Amp and Cap Modification eSnips Folder
Out from Elite Pro line out (Front L/R) to amp: Diminished soundstage, overall bland sound across all freq's, and bass that's just not nearly as taut or deep as the EMU 0404.
- based on objective RMAA and pinknoise analysis X-FI tests, its fairly flat. (flat from a test perspective)
- SB0550 driver = v18.104.22.1687; all effects off, bitmatched set.
Assuming your X-FI is not defective and not knowing your subjective listening tastes:
- entertainment mode, as opposed to audio creation mode?
- enable X-FI EAX and X-FI Crystalizer effects?
- use front Line-Out from card, as opposed to external box?
- do RMAA tests on your EMU 0404 to see if it's freq spectra rises at low and high ends?
- might be an X-FI output impedance/level or Practical Devices XM4 input impedance mismatch?
If you willing to risk keeping your X-FI, might try:
- increasing front Line-Out capacitor values (C45, C35, C58, C49) to 68uf:
- Panasonic FM 68uf @ 16vdc: Digikey PN: P12921-ND
- changing +/- 12vdc filter caps (C104, C133) to:
- Panasonic FM 330uf @ 25vdc: Digikey PN: P12387-ND
- simple, easy and reversible (provided original caps are carefully removed) tests to do than opamp swap.