ralf.mardorf at alice-dsl.net
Sat Jan 8 02:23:28 UTC 2011
On Sat, 2011-01-08 at 03:13 +0100, Ralf Mardorf wrote:
> On Sat, 2011-01-08 at 02:56 +0100, Ralf Mardorf wrote:
> > On Fri, 2011-01-07 at 22:30 +0100, Roy Damen wrote:
> > > Hello Martin, i bought a behringer u-202(not at home,i think this is the
> > > type ) usb audio device for Christmas for myself. Behringer has good
> > > inside quality with saving on the housing, which means cheap. It has a
> > > max of 48kHz, but worked out of the box with pulseaudio, digital
> > > output, jack and alsa in a better way than the onboard card(alc888).
> > > Even the soundquality is better than the onboard @ 48kHz. The funny
> > > thing is that it costed 27 Euro's incl shipping and it is a very small
> > > high quality device, Check your local dealer or the Behringer site for
> > > this soundcard with line in/out spdif-out and usb, i say the
> > > price/quality is pretty amazing for a small device like this,!
> > http://www.thomann.de/gb/behringer_ucontrol_uca_202.htm 23.90€ +
> > shipping costs. I don't know if this device is a good one, but it has
> > got no mic pre-amps.
> > On German, but reading isn't needed:
> > Balanced non-discrete mic pre-amp without phantom power:
> > http://www.theimann.com/Analog/Misc_Tech/Sym_Elrad/index.html
> > >From the German Wiki (but you don't need to read the German text here
> > too):
> > Phantom power:
> > http://www.elektronik-kompendium.de/public/schaerer/dcdc48v.htm
> > and how to add it to the pre-amp(information by Shoeps!):
> > http://www.schoeps.de/D-2004/PDFs/Mikrofonbuch_Kap13.pdf
> > But I guess I was mistaken. It's possible to get studio quality (btw. I
> > worked for Brauner microphones, today no studio audio anymore, I'm
> > working for Terres Des Hommes), but perhaps it's more expensive to build
> > such a pre-amp yourself, than it is to buy one.
> > Cheers!
> > Ralf
> PS: A note regarding to IC op-amps IIRC the TL series are outdated, less
> good, but e.g. 4580, you might compare datasheets.
> I didn't check the circuits by the links I posted!!!
PPS: Pardon, a last note, the resistors to add the phantom power to the
balanced pre-amp needs to be as equal, as possible. You might not have a
measuring bridge ;), so use very low tolerance resistors.
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