Specifications

1.32

Operation Manual

Revision 1.05Prism Sound Orpheus

position, the analogue outputs are fed directly from the ADAT inputs; in the Mix position, the analogue

output mixer can be used to mix the ADAT inputs with any of the other Orpheus inputs.

The ADAT inputs and analogue inputs are available to the host computer (if connected) for recording

or monitoring if required. The ADAT outputs and analogue outputs appear to be available to the host

computer (if connected) but are ignored by Orpheus. Orpheus' S/PDIF inputs and outputs, and

headphone outputs, remain available to a connected host computer.

In common with all ADAT modes, ADAT Direct mode can only operate with all eight channels if the

sample rate is set to 44.1kHz or 48kHz. At sample rates of 88.2kHz or 96kHz, ADAT Direct mode

operates in SMUX mode, supporting only the first four analogue input and output channels. ADAT

Direct mode cannot be selected at sample rates of 176.4kHz or 192kHz.

NOTE: Since ADAT Direct mode modifies Orpheus' normal signal routing, it is very important

to ensure that ADAT Direct mode is not selected accidentally.

5.6 Rack mounting

Orpheus is supplied configured for table-top operation, with rubber feet attached and no rack-mount

ears fitted.

To convert for rack-mounting: First fit the rack-mount ears by removing the front four screws from

each side of the unit, using the hex key provided; then replace the same screws to retain the rack

ears provided. If necessary, the rubber feet can be removed by withdrawing the plastic centre-hub of

each foot a little way prior to pulling the whole foot out. The hub can be initially raised with a small

flat-bladed screwdriver. Retain the feet for later use.

If Orpheus units are rack mounted, an empty 1U gap should be left above each Orpheus to ensure

effective cooling.