Focusrite Saffire PRO 40 User Manual page 22

S/PDIF AC3
Allows the user to stream AC3 directly via the S/PDIF outputs. (AC3 is encoded 5.1 audio, e.g. from a DVD player, that will be sent via
S/PDIF cable (RCA or Optical) to your 5.1 decoder.)
Active Monitor Pad
When ticked, this drops the level of monitors 1 and 2 by 20dB.
This is recommended for set-ups using a stereo pair of Active Monitors.
If you find that for normal listening levels, the Volume monitor knob has to be set at only e.g. 3 or 4, then tick 'Active Monitor Pad' and
the volume monitor knob should now be at 6 or 7, thus giving you better control of the output volume level.
Device Mode
Normal Mode
The Saffire PRO 40s operation will be dictated by the buffer size specified in your DAW (Mac,) or as set in the ASIO
buffer size (Windows.)
Safe Modes 1-3
Safe Modes 1-3 offer increasing levels of output buffer size.
If you are experiencing clicks and pops or audio dropouts, this may be due to certain hardware in your computer that is affecting
the performance of audio devices connected via Firewire. Rather than removing and replacing hardware (e.g. your graphics card or
wireless internet card) trying these 'safe modes' may solve the problem.
Disable WDM Audio in Windows
Tick this option to ensure that only audio from your DAW is played through the Saffire PRO 40.
Windows sounds will not be played through the Saffire PRO 40. Sounds from other software will not be played through the Saffire
PRO 40.
This is useful to prevent any unwanted audio being heard when you are working in your DAW. It is especially useful when other
applications output audio at a sample rate different from the sample rate at which your DAW is operating.
Sample Rate Changing
Unlock – Allows any WDM or ASIO application to change the Sample Rate.
ASIO only – Allows only ASIO applications to change the Sample Rate.
Control panel only – Allows only the Saffire PRO 40 Control panel to change the Sample Rate.
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