Great news! Rather than me asking about why my Yamaha FC7 volume/expression pedal doesn’t work or asking about compatibility, I can share a success story. It is compatible with the Arturia KeyLab MkII. (I have the 61. It’s almost certainly compatible with the 49 as well, and probably the 88 too.) B…

Hi, yes I did a bit of research on this a few years back and this is what I found out. Not all pedals are created equal. [image] I had to reverse the tip and ring on my Hammond pedal to use it with Korg. I did this with a couple of stereo TRS adapters hooked back to back so I didn’t have to cut i…

Thanks Steve. This is very helpful. In the case of the FC7 and the Akai, I’m 90% sure it was the impedance, rather than the polarity. I opened one of the pedals, got out the voltage meter, etc. As I recall, the FC7 doesn’t move the pot all the way from end to end, and with the 50K pot, the voltage d…

[image] SteveC-Bome: I had to reverse the tip and ring on my Hammond pedal to use it with Korg I use a gig script to reverse the polarity of the incoming message in this case.

I soldered a little adapter cable that i use to switch polarity, this also works on any hardware device. :slight_smile:

I am using a modified (switched the tip and ring cable as mentioned above) FC7 pedal on a Roland A88mk2 controller. That also works perfectly! The FC7 is much more stable and robust than the EV-5 pedal from Roland.

@dhj The issue is not solved with software in this case because the physical hardware wiper connection is in the wrong place. If the hardware cannot reverse the tip/ring connections,it simply will not work. Some hardware interfaces allow for this by electronically reversing the tip/ring connection…

Yamaha FC7 Pedal Compatibility

Hardware

dhj September 19, 2021, 10:31am 4

I use a gig script to reverse the polarity of the incoming message in this case.