I found various references to similar problems in the archive, but couldn’t find the answer.
Mac OSX 10.13.6
PreSonus Firebox(firewire) ->. Mac Mini or MacBookPro i7, 16GB RAM
MIDI and Audacity setup set 41100Hz
Setup: tape deck(lineout) → PreSonus Firebox(firewire) → Mac
Systems preferences sees a PreSonus FIREBOX(1911) and a real live signal.
Audacity sees PreSonus FIREBOX(1911), but when I start recording, I get a flat line.
Quicktime-economy won’t allow me to record, but it does is a live signal.
I would appreciate any advice. Years ago I successfully did a similar turntable->preamp-> same-Firebox->Mac(some program)
I think this is a problem with what channels the ancient Presonus device and drivers present to the application.
- SystemPreferences->Sound sees a live signal from Presonus device.
- Quicktime just works, but has few features
- GarageBand saw the Presonus device but no signal seemed to get to the App. I finally got it to work by having it join Channels 3 and 4, and then choosing them. Only at that point did it see the signal, and that took a while.
- Audacity sees the device but no signal. I can’t find how to get Audacity to use specific Channels. It might be that the Apple Midi app will join those channels, but I haven’t figured that out.
(Arg. Is there a way to edit the subject line? Presonus not Personus)
Audacity does not (yet) support channel mapping. If you need to use channels 3 and 4, then you will need to set Audacity to record 4 channels, then delete channels 1 and 2 after the recording ends.