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All credit for this idea goes to Head-Fi user "Germanium". I just wanted to share the mod on OCN so people who don't visit HiFi boards would see it. Most of this below is copied from the OP and from my own guide I wrote on Page 2.

http://www.head-fi.org/t/705284/germaniums-sound-blaster-zxr-mod-thread

"The film caps provide an improved signal return path resulting in radically higher resolution both from the DAC & from the I/V converters & buffers."



Quote:

  • The caps in the red box need to be shorted underneath the board. This is for the analog stereo output section of the card
  • The caps in the green box need to be bypassed underneath with two 12uf metalized film caps each.
  • The caps in the purple need to be bypassed with one 12uf metalized film cap each.
  • The caps in the blue box are for the surround sound analog output section. These only need to be shorted if you are using 5.1 speakers with analog input.
This mod requires a total of 7-12uf capacitors

The sound coming from this card is to die for it is so much better than when fresh out of the box.

Everything has much higher resolution. Bass though just as present is more detailed & takes it's proper place behind the midrange & still adding tremendous foundation to the music. Treble is massively more detailed yet easier on the ears as well. This is not to say the treble lacks dynamics as even the dynamics are improved as well. Instrument such as bell & triangles have a piercing but sweet quality. By piercing I mean that it projects it's sound above other instruments, not that it sounds harsh as it doesn't.

Saving the best for last, The midrange is what tube lovers love about tubes. Well you tube lovers can put away your tube amps now as this card has that type of midrange in spades with out all the fuss rebiasing your tubes every time you listen to your music, not that all tube amp need constant rebiasing but many higher end tube amps do. Just joking about putting away your tube amp really though. It's just this card takes on the midrange in such an excellent fashion yet retains all the best attributes of transistor amps. I.E. tight extended bass & extended treble but improving on the treble by giving it the sweetness & detail of the finest tube amps & yes I have heard some of the finest in the world tubes amps as one of the was built by a friend of mine that now deseased but in his heyday was lead audio engineer for A&M records as well as Disney studios. These were true studio grade amps. Before he died he sold the design which some parts were cheapened & turned into a consumer grade amp & they are charging 40,000 dollars for. Only 5 of the original amp were built before he became too sick to continue. He was only charging $7,000 for a 50 watt version & $3500 for the 25watt version amp that had even better parts & had an output transformer that was truly a design that was never seen outside of the studio. Instead of having the standard 4, 8, & 16 ohm taps found on most output transformers the winding of the transformer were sent out to a jones socket where the windings were reconfigured for each impedance tap inside the jones plug. This allowed him to double up the windings so they ran in parallel for the 4 ohm tap or run them in series for the 16ohm tap. Note he was not making a killing on these amps as the parts cost for the 25 watt version came to $2500.
Source for affordable caps:

ERSE PEx 12uF 250V: http://www.erseaudio.com/Products/PEx250v/12uF-250-volt-Metallized-Polyester-Mylar-Film-Capacitor ($2.97/unit = $17.82 (For 5.1))
ERSE PulseX 12uF 250V: http://www.erseaudio.com/Products/PulseX250v/MPX25-03-12-00 ($4.57/unit = $27.42 (For 5.1))

Here is my guide on how to do this with pictures:

1) Things Needed (for my way)

Soldering Iron and Solder
Extra Resistors/Capacitors/LED (for cutting leads to size for shorts)
7 Metal Film Capacitors
Solid Copper Core Wire
Shrink Wrap
Hot Glue Gun and Glue

2) First Step

The first step is to cut a lead off one of your spare resistors or whatever you have (you can buy a 5 pack at Radio Shack for like $3) to the size of the distance between the capacitor you are shorting and then you basically do this 11 more times (12 total). I used NoOneLt's diagram:



You can see here how my shorts match the diagram exactly (if you don't know what a short is then you shouldn't be doing this mod).



Basically you just put one of those lead pieces you cut in the position to solder and get one side soldered and then solder the other, although it can be tricky with pieces of metal that small. If you put too much heat the solder will melt on both ends.

3) Now comes the tricky part that can be modified based on your PC and the capacitors you bought. This is the arrangement I went with. You can see the use of shrink wrap and hot glue. I had to use the solid core copper wire to bridge the distance between back of the capacitor and solder point. I'm sure I will make this more detailed as questions come in.



Each capacitor is hot glued on the connection end where they are joined (on the doubles) and also underneath to secure them to the board

If anyone has any questions please feel free to ask and I hope a few people are interested. I have done many mods in my life that involved taking soldering irons to perfectly good hardware, but this one takes the cake by a long shot. If you are really interested in doing this mod I recommend you join Head-Fi, but I will try and help anyone who has questions here on OCN.
 

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All credit for this idea goes to Head-Fi user "Germanium". I just wanted to share the mod on OCN so people who don't visit HiFi boards would see it. Most of this below is copied from the OP and from my own guide I wrote on Page 2.

Germanium's Sound blaster ZXR mod thread

"The film caps provide an improved signal return path resulting in radically higher resolution both from the DAC & from the I/V converters & buffers."



Quote:


Source for affordable caps:

ERSE PEx 12uF 250V: 12uF 250volt Metallized Polyester Mylar Film Capacitor-ERSE ($2.97/unit = $17.82 (For 5.1))
ERSE PulseX 12uF 250V: ERSE - PulseX ($4.57/unit = $27.42 (For 5.1))

Here is my guide on how to do this with pictures:

1) Things Needed (for my way)

Soldering Iron and Solder
Extra Resistors/Capacitors/LED (for cutting leads to size for shorts)
7 Metal Film Capacitors
Solid Copper Core Wire
Shrink Wrap
Hot Glue Gun and Glue

2) First Step

The first step is to cut a lead off one of your spare resistors or whatever you have (you can buy a 5 pack at Radio Shack for like $3) to the size of the distance between the capacitor you are shorting and then you basically do this 11 more times (12 total). I used NoOneLt's diagram:



You can see here how my shorts match the diagram exactly (if you don't know what a short is then you shouldn't be doing this mod).



Basically you just put one of those lead pieces you cut in the position to solder and get one side soldered and then solder the other, although it can be tricky with pieces of metal that small. If you put too much heat the solder will melt on both ends.

3) Now comes the tricky part that can be modified based on your PC and the capacitors you bought. This is the arrangement I went with. You can see the use of shrink wrap and hot glue. I had to use the solid core copper wire to bridge the distance between back of the capacitor and solder point. I'm sure I will make this more detailed as questions come in.



Each capacitor is hot glued on the connection end where they are joined (on the doubles) and also underneath to secure them to the board

If anyone has any questions please feel free to ask and I hope a few people are interested. I have done many mods in my life that involved taking soldering irons to perfectly good hardware, but this one takes the cake by a long shot. If you are really interested in doing this mod I recommend you join Head-Fi, but I will try and help anyone who has questions here on OCN.
All credit for this idea goes to Head-Fi user "Germanium". I just wanted to share the mod on OCN so people who don't visit HiFi boards would see it. Most of this below is copied from the OP and from my own guide I wrote on Page 2.

Germanium's Sound blaster ZXR mod thread

"The film caps provide an improved signal return path resulting in radically higher resolution both from the DAC & from the I/V converters & buffers."



Quote:


Source for affordable caps:

ERSE PEx 12uF 250V: 12uF 250volt Metallized Polyester Mylar Film Capacitor-ERSE ($2.97/unit = $17.82 (For 5.1))
ERSE PulseX 12uF 250V: ERSE - PulseX ($4.57/unit = $27.42 (For 5.1))

Here is my guide on how to do this with pictures:

1) Things Needed (for my way)

Soldering Iron and Solder
Extra Resistors/Capacitors/LED (for cutting leads to size for shorts)
7 Metal Film Capacitors
Solid Copper Core Wire
Shrink Wrap
Hot Glue Gun and Glue

2) First Step

The first step is to cut a lead off one of your spare resistors or whatever you have (you can buy a 5 pack at Radio Shack for like $3) to the size of the distance between the capacitor you are shorting and then you basically do this 11 more times (12 total). I used NoOneLt's diagram:



You can see here how my shorts match the diagram exactly (if you don't know what a short is then you shouldn't be doing this mod).



Basically you just put one of those lead pieces you cut in the position to solder and get one side soldered and then solder the other, although it can be tricky with pieces of metal that small. If you put too much heat the solder will melt on both ends.

3) Now comes the tricky part that can be modified based on your PC and the capacitors you bought. This is the arrangement I went with. You can see the use of shrink wrap and hot glue. I had to use the solid core copper wire to bridge the distance between back of the capacitor and solder point. I'm sure I will make this more detailed as questions come in.



Each capacitor is hot glued on the connection end where they are joined (on the doubles) and also underneath to secure them to the board

If anyone has any questions please feel free to ask and I hope a few people are interested. I have done many mods in my life that involved taking soldering irons to perfectly good hardware, but this one takes the cake by a long shot. If you are really interested in doing this mod I recommend you join Head-Fi, but I will try and help anyone who has questions here on OCN.
Hello, can you draw where the positive leads of the capacitor must be solder to.
 
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