TWO 828MK2 - BUT DP ONLY RECOGNISING ONE

[SMOOGHEAD]

Hi

I'm a newbie to this forum but been using Digital Performer since version 4 and I bought an 828Mk2 in the late 2000s and am still using it, now with DP 9.51 and Mac OSX 10.13.6. The Mac is a MacPro - late 2010 model with a 3.46GHz 6-core Intel Xeon processor and 40Gb memory. I've had few problems until earlier this week when I decided to add another 828Mk2 in order to expand the studio recording capability.

I also have a MOTU MTP AV for MIDI, connected via USB to the same Mac.

So I now have 2 x 828Mk2s. Both appear to be working OK from the analogue point of view. Digitally, MOTU Audio Setup recognises both 828s - one as #1 and the second as #2. #1 is connected via Firewire to the Mac. #2 is connected to #1 also by firewire, and as shown in the 828 manual, #1 Word Clock Out is connected to #2 Word Clock In. However there are a few problems:
- DP recognizes 828#2 inputs only, or 828#1 inputs only, never both.
- when DP starts up, it changes the sampling rate settings and sometimes the clock settings.
- I have tried both 828s set to 48000 and 96000 but doesnt seem to make any difference.

I suspect the issue is in the clock settings but this is doing my head in which is why I've posted here. Any help would be very welcome, thanks.

Regards

SMOOG

[rickorick]

Go to Configure Hardware driver and shift click on the second 828 and see if that helps

[SMOOGHEAD]

Thanks. That has stopped DP resetting the clock on one of the units every time it starts, but I can still see only one 828.

When I switch the second 828 to 96000 the MIDI out light comes on. I have no idea if its connected but thought I should share.

I've also reconnected the 828s using separate Firewire cables rather than both through one cable then into the other. Its made no difference.

[rickorick]

OK look at Audio MIDI Setup, and MOTU Audio Setup. See if there is something there that you
need to hook up. I have multiple MOTU interfaces and I can get them to work together, most
of the time it's just 2 so I have not needed to do word clock. Keep poking at them.

[SMOOGHEAD]

Fixed thanks to MOTU tech help. Simple fix is to highlight both 828s in the Configure Hardware Driver window. Both 828s show up in DP after that. Simple fix which I thought I should share. Thanks to MOTU Tech Support.