Surround sound is multi-channel audio output that expands on the basic two-channel stereo format. Surround sound with Apollo X is a hardware and software operating mode that is configured within UAD Console.
When enabled, Apollo X and UAD Console output features are optimized for the surround environment.
Note: Surround functionality is available only with Apollo X Rack interfaces.
Required Software
Surround sound functionality for Apollo X Rack audio interfaces is available with
UAD software v9.7.1 and higher.
Surround Documentation
Please refer to the UAD Console manual chapter - Apollo X Surround Sound,
and the FAQ: Apollo X Surround Sound article for answers to common questions.
Surround Calibration Audio Files
The Apollo X Surround Sound chapter within the Apollo Software Manual - Thunderbolt.pdf includes a surround monitor calibration procedure. This procedure uses calibrated digital audio source files that are played from within a surround-capable DAW while volume is measured with an external SPL meter.
The audio files referenced in the monitor calibration procedure can be downloaded by clicking the link below. The download includes two mono files at 48 kHz:
- 500-2500 Hz pink noise @ -20 dBFS.wav
- 40-80 Hz pink noise @ -20 dBFS.wav