[LAD] Is it possible to use two RME cards in sync?

[Florian Faber]

Pau,

> the system i need to build should have 8 AES inputs and 24 AES outputs.
> For that, i see two basic approaches 1) using two RME AES-32 (*) cards
> in world-clock synch and 2) using a RME hammerfall with 24 ADAT
> input/outputs and then several 8ch ADAT<->AES converters such as the
> Aphex 144 (+), which costs about 400€ each 8ch unit.

3) a MADI interface and any MADI-to-ADAT converter you want

What are those AES ports needed for anyway? I mean, this are 16 channels
in and 48 channels out. With that number of channels, using AES just
becomes a pita. Think of the cabeling alone - or use Tascam-style 25 pin
DSUB connectors.

> Option 1 seems to me simpler and cheaper but i ignore if is feasible and
> reliable: Have anyone had good experiences using two clock-synced RME
> cards with jack?

The driver can start the buffers synchronously, so you have
sample-synchronous output. To have jack working with multiple cards, you
can either use alsa magic to combine the cards, or use alsa_out (with
disabled resampling).


Flo
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