Lyngdorf Audio Millenium ADC Analog/Digital Converter - Manual (Page 14)

1 4
Phono Input Menus
High Pass Filter
The high pass fi lter can be chosen to fi lter away rumble and/or acoustic feedback. Available settings are
10, 15 or 20 Hz. This is referred to as the F2 point in fi g. 4.
De-emphasis
Records made before 1955 were recorded with different emphasis curves, requiring different de-empha-
sis during playback. Some records specify the emphasis curve used on their cover, but in many cases
you have to make an educated guess based on record label and year of release. Almost all records after
1955 are recorded with the RIAA emphasis.
Figure 4. Defi nition of playback de-emphasis curve.
RIAA
F2 Not used (the response is fl at from F3 and down).
F3 3180 µS (50 Hz).
F4 318 µS (500 Hz).
F5 75 µS (2122 Hz).
F6 Not used (the response continues to fall with 6 dB/octave above F6)
Other de-emphasis curves available in the Millennium ADC are: AES, BSI, CCIR, CCIR 134, DIN 45533/36/37,
IEC BS 128 and NAB.
Select Cartridge
The Millennium ADC allows you to make presets for up to 5 different cartridges. Select the Cartridge no.
you wish to set up and continue with the Setup Cartridge menu.