Lyngdorf Audio Millenium ADC Analog/Digital Converter User Manual

Page 16

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Input sensitivity versus cartridge output specifi cation

The output voltage of cartridges are generally specifi ed at a stylus velocity of 5 cm/sec. High performance

turntable/tone arm/cartridge combinations can track up to 50-75 cm/sec resulting in an output of 10 to 15

times the output voltage specifi ed for the cartridge. The input sensitivity specifi ed for the Millennium ADC

is the voltage required for full-scale output.

In the guide (fi g 5) we have calculated the settings with a track ability of 50cm/sec.

Example:

Cartridge output voltage specifi cation: 4 mV at 5 cm/sec. Assuming the cartridge has a track ability of 50

cm/sec this gives a peak maximum output voltage of 40 mV(50/5*4), and the proper setting for the Millen-

nium ADC’s input sensitivity is 40mV relating to a Cartridge Gain of +41dB.

Assuming the cartridge has a track ability of 60 cm/sec this gives a peak maximum output voltage of 48 mV

(60/5*4), and the proper setting for the Millennium ADC’s input sensitivity is 50mV (closest higher value)

relating to a Cartridge Gain of +39dB.

Cartridge Out-

put @ 5cm/sec.

Input sensitivity

Cartridge

Gain [dB]

Cartridge Out-

put @ 5cm/sec.

Input sensitivity

Cartridge Gain

[dB]

18mV

180mV

+28

800uV

8mV

+55

16mV

160mV

+29

700uV

7mV

+56

14mV

140mV

+30

600uV

6mV

+57

12mV

120mV

+31

550uV

5.5mV

+58

11mV

110mV

+32

500uV

5mV

+59

10mV

100mV

+33

450uV

4.5mV

+60

9mV

90mV

+34

400uV

4mV

+61

8mV

80mV

+35

350uV

3.5mV

+62

7mV

70mV

+36

300uV

3mV

+64

6mV

60mV

+37

250uV

2.5mV

+65

5,5mV

55mV

+38

200uV

2mV

+67

5mV

50mV

+39

150uV

1.5mV

+70

4,5mV

45mV

+40

100uV

1mV

+73

4mV

40mV

+41

90uV

900uV

+74

3,5mV

35mV

+42

80uV

800uV

+75

3mV

30mV

+43

70uV

700uV

+76

2,5mV

25mV

+45

60uV

600uV

+77

2mV

20mV

+47

55uV

550uV

+78

1,5mV

15mV

+49

50uV

500uV

+79

1mV

10mV

+53

45uV

450uV

+80

900uV

9mV

+54

40uV

400uV

+81

Figure 5. Guide for setting of Cartridge Gain.

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