Problems Routing an SSL BUS+ In and Out of Pro Tools via an Apogee Sympony

In a recent remote technical support session, I helped a client work out why they were having a problem with the routing chain for their studio outboard equipment.

This is the signal path they wanted to achieve:

Pro Tools plays back an audio track
The track’s audio is routed to Symphony I/O Outputs 7+8
Symphony Outputs 7+8 are connected by jack cables to the SSL Bus+ Inputs
SSL Bus+ Outputs connected by jack cables to Symphony I/O Inputs 7+8
Pro Tools records onto a new audio track

My client talked me through the chain and I had a look at their software settings using AnyDesk. I found the problem within the Apogee Control app.

By default, Outputs 1-8 are all set to monitor signal from Playback 1-2.

Changing the Digital Ref value to match the Playback channels received from Pro Tools solved the problem. The signal path now flowed exactly as my client wanted it.

Categories: Pro Tools, Pro Tools external equipment, Remote Support

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