Octave IN 1, Руководство пользователя

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MODULE OVERVIEW – PHONO INPUT MODULES
8
1. Please see the technical data or the pickup cartridge system’s owner’s manual for
the recommended impedance.
2. Set the recommended input impedance according to the following table. If the rec-
ommended input impedance is not listed in the table, use the closest value. If two
values are possible, you can select the optimal impedance using a listening test.
Switch no.
1 2 3 4
1000 ohms ● ● ● ●
500 ohms ○ ● ● ●
340 ohms ● ○ ● ●
250 ohms ○ ○ ● ●
200 ohms ● ● ○ ●
170 ohms ○ ● ○ ●
146 ohms ● ○ ○ ●
125 ohms ○ ○ ○ ●
100 ohms ● ● ● ○
97 ohms ○ ● ● ○
75 ohms ● ● ○ ○
66 ohms ● ○ ○ ○
62 ohms ○ ○ ○ ○
● = OFF / ○ = ON
On delivery, the impedance is set to 100 ohms: This setting is optimal for most low-output
MC pickup cartridge systems.
3.2.3. IN 2 technical data
MC RCA technical data
Input sensitivity 0.1 – 1 mV
Input impedance 62 – 1000 ohms || 4.7 nF
Gain factor 65 dB Gain high, 58 dB Gain low
Signal-to-noise ratio

69 dB Gain high, -75 dB Gain low, wideband

86.5 dB Gain high, -92.5 dB Gain low, bandpass
measurement at 1 kHz
Noise factor 0.5 µV / √Hz with Gain low
1.27 µV / √Hz with Gain high