The hack involves a BTLE MIDI adapter from Yamaha, a 5v USB battery & a short USB host cable. The 10,000 mAh battery I chose to powered my linnstrument & adapter for around 24 hours and the range was 15-25 feet.
Yamaha's product page : http://usa.yamaha.com/products/music-pr ... i/ud-bt01/ (http://usa.yamaha.com/products/music-production/accessories/usb-midi/ud-bt01/)
Yamaha's product video : https://youtu.be/9NUTuOi1_Ec
Yamaha offers two very good models of MIDI wireless adapters. One is a standard MIDI port md-bt01 and the other is a USB connected ud-bt01. Take your pick, you need only one or the other, either works well on the linnstrument, I tested them both. Either can be purchased for around $50 on Amazon.
The md-bt01 http://a.co/3c74XJv (http://a.co/3c74XJv) connects to the two MIDI ports on the linnstrument. Add a common phone charging 5v battery and cable to plug into the host port on the linnstrument. Be sure Global Settings in the linnstrument is set to output on the midijacks. I also switched to low power mode.
I found the ud-bt01 http://a.co/g8oRZjF (http://a.co/g8oRZjF) more elegant to install & use. It has one male USB port that plugs directly into the 5v battery's http://a.co/9T4TUvC (http://a.co/9T4TUvC) USB port. Use a short USB host cable http://a.co/h4UOFWc (http://a.co/h4UOFWc) to connect the remaining ud-bt01's female jack to the linnstrument' host jack. Be sure your linnstrument's Global Settings is set to use the USB port for MIDI. I also put the linnstrument in low-power mode.
I use a Mac running Sierra, Logic Pro X & Roger Linn's presets for Logic Pro http://www.rogerlinndesign.com/assets/l ... -10-16.zip (http://www.rogerlinndesign.com/assets/linnstrument-logic-sounds-2-10-16.zip). Yamaha has Mac setup instructions for the md-bt01 here : https://www.yamahasynth.com/resources/m ... for-mac-os (https://www.yamahasynth.com/resources/md-ud-bt01-for-mac-os) which also works for the ud-bt01.
If you're not used to using Bluetooth Low Energy devices yet, it may take a little trial & error. I noticed the latency varied greatly at first each time I connected. Restarting the Mac helped pull the delay to a very quick, very playable latency.
This setup works extremely well with a guitar strap, latency is extremely low & not an issue for quick playability or nuanced vibrato and the battery I used lasted an entire 24 hrs. Working properly, I can't tell the difference between this hack and a direct hard-wired USB connection to the Mac.
I ordered a different battery & cable than the links I provided above as I'm in Europe. I used 3M Dual Lock Velcro http://a.co/fqnk7BR (http://a.co/fqnk7BR) to fasten the battery & secure the ud-bt01 underneith the linnstrument. Everything can be removed in a few seconds. Here's a photo of my set-up :
I'm sure all this could possibly be put into the interior of the linnstrument where it would be best suited & appreciated (as in the Roli Seaboard, for example). Wireless Bluetooth seems like a natural fit for the linnstrument. Who knows?, Roger Linn might even offer a wireless Linnstrument someday in the future.