Hey JMc, sorry you are having issues.
First off you can rule our anything to do with the iPad. The recording mechanism in the DL32R has nothing to do with a fast or slow, stable or flaky iPad.
I would absolutely suspect the hard drive first. Have you tried a different drive? Please do that and see if the behavior is the same or different. Please try a different size and different manufacturer. I know it's a pain but hard drives can be bad even when they seem good and two drives that appear to have the same specs from the same manufacturer can in fact be different.
It's hard to recommend a particular hard drive given the vast variety of drives available. Even models from known manufacturers change the internal workings without any notification. We do have some basic drive requirements listed in the Master Fader 3.0 manual page 191 and the DL32R Hardware manual page 20.
USB – HDD Recording / Playback Drive Requirements:
Connection: USB 2.0 High Speed (as a host)
Connector: USB-A
Audio: 1-24 channel, 48 kHz, 16/24-bit (multichannel .wav)
Supported Devices: USB 2.0 / 3.0 Class Compliant HDD
HDD Format: FAT32
Bus Power: 5V, 1A max
Please refer to those pages for more details. We've tested with many drives of these types without issues but of course we cannot test them all nor guarantee that every single drive will work with the DL32R.
Also, and this is recommended for all, please format the drive with the DL32R itself. Not with a Mac or Windows PC. This is imperative for good performance.
If the issues are the same with all drives tested, next step would be to force update the mixer, just to be sure all the latest and greatest firmware is installed correctly.
Force Update Instructions
0. Be sure you iPad has the latest version of Master Fader and is set to never go to sleep (auto lock set to never)
1. Turn OFF the DL series mixer.
2. Connect the Wi-Fi Router to the mixer and turn on the router.
3. Connect the iPad to the Wi-Fi router.
4. Press and hold the force update button while powering on the mixer.
For DL806/1608: The button is on the rear panel between the network and power connectors.
For DL32R: The button is on the front next to the Network LED.
5. Release the force update button after 5 seconds.
6. Go to Tools>Devices in Master Fader and select the wireless DL mixer which will be listed in update mode
7. After several seconds, a popup will appear in Master Fader asking you to confirm the update. Press "Yes, update" to approve it and the update will continue. This will take up to 15 minutes.
8. After the update, the mixer restarts. Note that after the mixer says it is finished, it actually still has one small update to finish to work properly. Wait about a minute before attempting to connect the iPad.
It should now work properly wired and wireless.
If none of this helps, I would contact support directly.
techmail@mackie.com
www.mackie.com/support/800.898.3211
425.487.4333