Novation Impulse 49 - Sound cuts out after a few seconds
First here's the details of my setup:
MacBook Pro with Mountain Lion
Garageband 11
Novation Impulse 49 USB MIDI keyboard connected to USB port
I bought this keyboard yesterday and it came with Ableton Live Lite 8 which I've installed and everything works fine in that.
I'm more used to GarageBand and wanted to use the Impulse with it but the audio cuts off after a few seconds. The keyboard still registers MIDI signals in GarageBand but there's no audio. The keyboard has a built-in template for GarageBand.
If I change instruments in the instrument browser the audio comes back for a few seconds and then cuts off again.
Same if I click 'Play' and then 'Stop', the audui comes back for a few seconds.
I get the same behaviour when trying to play along to any of the GarageBand piano lessons. The audio from the lesson and my keyboard both come through at first then after a few seconds my keyboard audio cuts out.
I'd welcome any suggestions as I would like to get this working reliably with GarageBand.
Thanks in advance.
Bill
GarageBand (Mac) '11, OS X Mountain Lion (10.8.2), 8GB Ram, Intel Core i7 Quad Core