expert help: external efx connected digitally

[musicmixer04]

Hi

I need some help to connect my outboard efx digitally to pro tools

My setup: Pro tools mix 6.4.1

AD8000SE

888/24

888/24

The AD8000 acrt as master, the 888/24 interfaces are connected with superclock. SLAVE sync mode

External efx:

tc electronics M2000 connected with AES EBU to aes ebu ch 1-2

tc electronics M one connected spdif adapter to AES EBU into 888/24 to aes ebu ch 3-4

tc electronics D two connected spdif adapter to AES EBU into 888/24 to aes ebu ch 5-6

Lexicon PCM 80 connected spdif adapter to AES EBU into 888/24 to aes ebu ch 7-8

I use the neutrik AES EBU to spdif adapter

M2000 connected to channel 1-2 and d two connected to channel 5-6 works great. I can also swap the connections for channel 5-6 to the lexicon and the m one and it works fine.

BUT: ch 3-4 and 7-8 does not work. I can only monitor the output signal as I know the 888/24 always have the digital out active. But I get no sound into the 888/24

question:

How can I get all the efx work at the same time with the 888?24? It is impossible bacause the 888/24 is in slave mode? Is the only solution to connect them to the AD8000 with a aes ebu card installed? Anyone have experience with using outboard digitally? What is the best solution having all my efx work at the same time?

Hope someone can help

[the dude]

Originally Posted by musicmixer04

I use the neutrik AES EBU to spdif adapter

there is NO such thing as this
you are confusing a AES to 75 ohm converter
this is only to used if you are using coax cables for AES/EBU and is primarily used in longer runs of AES signal, adapting 150 ohm AES signals from a 75 ohm source i.e. A SDI/HDI DVR etc...
IT DOES NOT change to format of a digital signal it ONLY changes the impedance

[Andre Knecht]

Originally Posted by the dude

[…] adapting 150 ohm AES signals…[/COLOR]

Should that be 110 ohm AES signals…?

[the dude]

Originally Posted by Andre Knecht

Should that be 110 ohm AES signals…?

Yes sir you are correct 110Ω

[musicmixer04]

yes I know it`s just a impedance converter , but the tc electronic efx and lexicon will work great with aes ebu using those adapters. But why does it work on ch 5-6 in pro tools but not on the other channels?