Filter Settings - Rega DAC Wolfson WM8742 Manual

IN USE
Power-up the DAC using the power switch on the front panel. After a few
seconds you will hear an audible click from the output mute relay and the
analogue audio will be active.
Please note:
previously selected setting's displayed before the unit was last powered down.
If the currently selected input has an active source connected the
LED along with the appropriate incoming sample rate LED will illuminate. Unless
the LED is lit the sample rate indication is irrelevant. By pressing
Input Locked
the input selection switch you can select any one of the inputs. When the
LED is off, or there is a transmission error the internal soft mute is
Locked
activated automatically.
By pressing the selection switch you can select any one of the 5 available
Filter
digital filters 1,2,3,4 or 5. (The exact properties of these filters are outlined on
the opposite page).
DIGITAL OUTPUT
The digital output mirrors the selected input. For example when input 2 has
been selected the digital output will be the signal present on input 2 but cleaned
up and re-clocked, this can be used to drive an auxiliary piece of equipment if
so desired.
5
The front panel will display the
Input Locked
Input

FILTER SETTINGS

The cut-off points of the filters are in the upper end of the frequency range.
However, due to complex technical phenomena, this will have an effect lower in
the frequency band. For further description see the glossary of terms. These
settings are a matter of personal taste and may only offer subtle changes. We
suggest using Filter setting 1 and trying different settings with various
equipment.
Filter setting switch & LED's Push to advance to the next filter.
Filter settings 1 – 5
(low sample rates 32/44.1/48K)
1 Linear phase half-band filter
2 Minimum phase soft-knee filter
3 Minimum phase half-band filter
4 Linear phase apodising filter
5 Minimum phase apodising filter
Filter settings 1 – 5
(medium & high sample rates 88.2/96 & 176.4/192K)
1 Linear phase soft-knee filter
2 Minimum phase soft-knee filter
3 Linear phase brickwall filter
4 Minimum phase apodising filter
5 Linear phase apodising filter
6