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Isaac Edwards
Topic Author
Posts: 5
Joined: Thu Oct 14, 2021 8:31 pm

External Instrument now only producing sound in left channel...?

Mon Oct 18, 2021 5:46 pm

Hi Team.

I'm at wit's end trying to figure this out. Details first:

Computer=iMac Retina 5K 27-inch Mid-2015
OS=Catalina 10.15.7

iPad Pro 2018
iOS=15.0.2

Roland FA-08 | System Program 2.03 | Driver 1.0.5 (everything current)

LPX 10.6.3

Two weeks ago, I had no problems. Most often, I am using my FA-08 as a MIDI controller. I currently am not using an external audio interface and plug directly into my iMac via USB. I was going to do some iPad production, and set up the External Instrument-Software track in LPX with an Input Monitoring Audio track. The FA-08 was triggering the iPad but no sound was being routed back into LPX. I reviewed my Audio-MIDI Setup, made sure the iPad was enabled and reviewed my audio-MIDI routing in LPX. To me, everything seemed just as it had always been when I've done this before, but now sound was only coming out of the iPad. Below is a screenshot of the Audio-MIDI Setup before I've enabled the iPad.

Screen Shot 2021-10-14 at 8.20.00 PM.png
Audio Devices 1
Screen Shot 2021-10-14 at 8.20.00 PM.png (256.06 KiB) Viewed 343 times


This is not something new, but I though perhaps worth mentioning: when I enable the iPad, a generic iPad icon enables, but the named iPad icon stays below with an 'Enable' option. I've included an image of this below, as well as what my Audio-MIDI Setup looks like.

Screen Shot 2021-10-14 at 8.20.40 PM.png
Audio Device 2
Screen Shot 2021-10-14 at 8.20.40 PM.png (224.15 KiB) Viewed 343 times


Screen Shot 2021-10-14 at 8.21.48 PM.png
MIDI Studio
Screen Shot 2021-10-14 at 8.21.48 PM.png (883.25 KiB) Viewed 343 times


Not being able to get my iPad to interface correctly, I decided to first just make sure everything was going well for the FA-08. So I set up a new External MIDI-Instrument track and Input Monitoring audio track with the FA-08 as controller and sound source. And here things took a strange turn: once again MIDI was being registered by LPX, but no sound was coming in. However, when I added a Gain plug-in to the MIDI chain, I would suddenly get sound, but almost entirely in the Left channel, extremely faint on the Right channel. I've included pictures below of what the External MIDI-Instrument set up looks like.

Screen Shot 2021-10-14 at 8.18.11 PM.png
Project Preferences
Screen Shot 2021-10-14 at 8.18.11 PM.png (326.06 KiB) Viewed 343 times


Screen Shot 2021-10-14 at 8.16.46 PM.png
Create New Track
Screen Shot 2021-10-14 at 8.16.46 PM.png (483.25 KiB) Viewed 343 times


Screen Shot 2021-10-14 at 8.17.26 PM.png
External Instrument plugin
Screen Shot 2021-10-14 at 8.17.26 PM.png (116.58 KiB) Viewed 343 times


As I mentioned at the top, I've set up my FA-08 to record, as well as my iPad, previously, and had no problems with Audio/MIDI over USB. But now it seems nothing is working correctly. I have switched through USB ports, even got a new cable to troubleshoot that, same results.

Thanks upfront for any and all help that can be provided. I am happy to answer any questions and hope I have not been too confusing in this post. Thanks again.


Last bumped by Isaac Edwards on Mon Oct 18, 2021 5:46 pm.