On 10/31/2016 11:28 AM, Sean M. Pappalardo - D.J. Pegasus wrote: > > On 10/31/2016 09:04 AM, Be wrote: >> Thanks for clarifying. I understand turning up the gain on an >> onboard sound card wouldn't work great, but that's not my intended >> use case. If this is where the recommendation to use a phono preamp >> comes from, it should be clarified in the documentation. > > Essentially, since most Mixxx users don't have high-end hardware and/or > want to test out VC before buying additional gear. But we've never > tested or heard reports of others trying it on higher-end gear, so we > don't really know how well it would work in practice. At best, results > will vary depending on the specific sound card and environment. (We > write the documentation to help the average user get good results with > minimal fuss, so usually only talk about best practices.)
Well, if it works with the Maya44 USB as the link Daniel posted reports, I don't know why it wouldn't work with a higher quality sound card. I guess I'll have to test to confirm and clarify the manual and wiki accordingly. >> indicate these can provide 118 dB gain (trim range -96 to +22 dBu) >> with -102 dB THD+N. I believe that would be way more than adequate >> for boosting phono level to line. Of course it wouldn't provide >> inverse RIAA equalization, hence the question. > > The analog noise (coming in on the cables before the ADC) you'll get > from that much linear gain (~46dB) could still interfere with the HF > time code position signal. Noise picked up along the cable would be just as much of a problem for a Traktor Scratch A6/A10 as it would be for a MOTU Ultralite AVB, unless sound cards with phono preamps have some sort of processing before the ADC that minimizes the effect of the noise. I suppose inverse RIAA EQ could have that effect, but I'm doubtful. I'm also doubtful they EQ the signal before it goes through the op amp. >> The Mixxx manual explicitly states that microphone inputs won't work >> for timecode. Was this also in reference to onboard sound cards? If >> so, this should be clarified. > > No, it's because the time code signal is stereo while microphone inputs > are mono. Ah, okay. That doesn't mean that two microphone inputs couldn't work though. ------------------------------------------------------------------------------ Developer Access Program for Intel Xeon Phi Processors Access to Intel Xeon Phi processor-based developer platforms. With one year of Intel Parallel Studio XE. Training and support from Colfax. Order your platform today. http://sdm.link/xeonphi _______________________________________________ Get Mixxx, the #1 Free MP3 DJ Mixing software Today http://mixxx.org Mixxx-devel mailing list Mixxx-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mixxx-devel
