Identical USB-devices not recognized in LogicPro. Hi everybody, I wanted to make some quadraphonic music with Logic Pro 9.1.7 (32-bit), OSX 10.6.8 . So I bought myself two identical sets of active USB-speakers (Akai RPM3) I plugged-in the first set, it was recognized by LogicPro. I plugged-in the second set: this was NOT recognized by LogicPro Logic probably thinks that only one set is connected, because the sets are identical. So no quadro. However, the two USB-speakersets ARE recognized by the Audio-MIDI-Setup.app . And also by the System Profiler.app . So it can be done. Is there a work-around? Kind regards, Urban Utan Rotterdam.