Getting H8000FW to work with mixer & soundcard

Hi everybody

I bought an eventide h8000FW which I adored for a long time, now I´m pretty happy it stands next to my H3000 d/se & my space pedal.

The original owner sparely used it and it still isn´t updated to the latest version, it is 5.0 at the moment. Anyways, I will update it within the next couple a days and guess it isn´t the problem I view at the moment.

I´m def not a tech ace (that´s why I´m here I guess…), but I´m trying to describe the problem I face here:

I´m working on a 8ch tube mixer wich is connected via adat to my rme ff400 which runs in auto sync clock mode. From the RME I´m connected via FW to my Hackintosh. I use my adat ins for recording synths and instruments etc. and my adat 1-8 outputs for analog summing in the final process. My current DAW is Cubase 7.5

For what I know is, my RME needs to be a slave of the mixer, otherwise I am not able to assign the channels to my little mixer for submixes or recordings. 

I´m trying to figure out what routing configuration I have to use just to be able to hear the H8000fw. It is a bit confusing to me, I read on the forum and gearslutz etc but don´t really know how to get a sound out of it. 

Practical use and connection of the H8000 in production use can be done in the following way;

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 ADAT or AES/EBU –  I/O  This way up to EIGHT channels of audio can be run to between the H8000 and your DAW’s soundcard/interface. In my case I’m running a Digidesign 003 with Pro Tools Le. There are two optical cables running between the 003 and the H8000. There is also a BNC cable from the H8000’s Wordclock Out going to the Wodclock In on the 003. In Pro Tools it’s set to slave to the incoming wordclock. Sessions are run a 48K as this more than addequate for me. When recording, experpermenting, doing standard production the H8000 will be used as a stereo unit with signals going to it via ADAT 1 & 2. Once an effect has been choosen and tweaked it is then printed to a new audio track. Remember many presets are summed in and stereo out so this comes in handy for “stereoising” a mono signal. When all the parts are ready and the song needs to be mixed Four stereo busses/auxelaries are setup as follows; H8000 – 1&2 – 3&4 – 5&6 – 7&8. These four busses each use an I/O insert in Pro Tools that route the signals to respecive I/O on the H8000. Then preset 3218: Virtual Rack 1 is called up and tweaked to taste.

ANY HELP APPRECIATED : )