An interesting project?

[Rochey]

http://www.behringer.com/FCA202/index.cfm?lang=ENG


a $100 firewire interface from behringer... I wonder if we can mod it? higher performance converters, better frontend...


the mind woggles at the thought :green:

 

[rafafredd]

Try it as it is first!

 

[rodabod]

It's probably ok, assuming the drivers are alright.

I'd imagine it will be almost entirely surface-mount making mods a bit of a no-no.

$100 is fairly cheap.

I got an M-A*udio Transit 24/96, 2 in 2 out USB interface which seems to do the job fine for £25.

Hmmm. I'm thinking about changing the decoupling capacitors.

 

[Rochey]

oh come on guys, where you're sense of adventure!

 

[gyraf]

I'm with you on this one Rocey - let's hope there's something upgradeable inside this time..

:razz:

Jakob E.

 

[Rochey]

we'll see, i think it's just a stereo box, although if it's either a bridgco or wavefront semiconductor device, i'm sure it could be opened up a little.

 

[JuanLu]

[quote author="gyraf"]I'm with you on this one Rocey - let's hope there's something upgradeable inside this time..

:razz:

Jakob E.[/quote]

Well... here have you one of these opened:

http://personal.telefonica.terra.es/web/turiae/MyPictures.html

(beware >2mb)

I have not tools to solder/unsolder surface mount components, but I'd like to tweak the box.
Suggestions? I have several Elna ros silmic 10uF to start with for the audio path.
What do you think?

Thanks all!

JL

 

[Rochey]

oooohhhh

Now I'm a happy bunny...

So, those AD86xx devices look like opamps...
The Cirrus device is an AD converter.

That oxford semi device is a 2in8out device.

I'm trying to work out where the DAC is though... I think it's below the 10uF below that cirrus device.

Providing those clocks can be "understood" better converters could easily be patched in... with our own frontend :grin:

 

[JuanLu]

[quote author="Rochey"]



I'm trying to work out where the DAC is though... I think it's below the 10uF below that cirrus device.

[/quote]

I have not a mag glass here to read the numbers on that chip (I'm getting old to see this little crap) :shock: ...but it seems to read 3450 d513. It is possible?

Regards.

JL

 

[12afael]

mmm unbalanced inputs... maybe a upgrade here is better than better ADC.

AD8604 - DigiTrim™ Quad Rail-to-Rail Input and Output Amplifier with Very Low Offset Voltage and Wide Bandwidths
http://www.analog.com/en/prod/0%2C2877%2CAD8604%2C00.html

AD8602 - DigiTrim™ Dual Rail-to-Rail Input and Output Amplifier with Very Low Offset Voltage and Wide Bandwidths
http://www.analog.com/en/prod/0%2C2877%2CAD8602%2C00.html

CS5340
101 dB, 192 kHz Stereo A/D Converter
http://www.cirrus.com/en/products/pro/detail/P1028.html

 

[ciminosound]

Just put a tube in it! :wink: :green:

 

[JuanLu]

[quote author="ciminosound"]Just put a tube in it! :wink: :green:[/quote]

:wink:

yes, but liked to keep it small (I have other interfaces and the aim of that adventure was to get a very portable one).

 

[tk@halmi]

Jusy put a very small tube in it. :green: