M1 ViNL manual issue 2.doc2 Page 9 of 12
Choosing cartridge type
Select the cartridge being used by pressing the MM or MC button. The display shows current selection and the
correct input sockets are automatically switched in.
RIAA and RIAA/IEC
This setting is common to both MM and MC cartridge types.
The -IEC option alters the normal RIAA frequency response by rolling off (reducing) the output at very low
frequencies i.e. around 20Hz and below. See chart on P.11 for more information.
This can help to prevent distortion and/or overload of subsequent amplifier/speaker systems by low frequency
artefacts such as record warp, surface noise or rumble.
Press the RIAA/IEC button to select IEC response. The display will indicate “IEC” to show that the IEC roll-off is
implemented. Press RIAA/IEC button again to display “RIAA” and the output response is now without roll-off.
MM loading resistor selection
The load resistor for MM cartridge is selected by pressing MM-R button. There are two options available, 47K
(47,000 ohms, or 47K) or 68K.
Press the MM-R button to select 68K. Press MM-R button again to revert to 47K. Choose the option
recommended by the cartridge manufacturer. If no recommendation is apparent, start by using the 47K option.
MM loading capacitor selection
The load capacitor for MM cartridge is selected by pressing MM-C button. There are 8 options available, 50pF
(pico-farads), 100pF, 150pF, 200pF, 250pF, 300pF, 350pF, 400pF.
Use the MM-C button to cycle through the options, until the closest one to the cartridge manufacturer’s
recommendation is displayed. If no recommendation is apparent, start by using the 50pF option.
MC loading resistor selection
The load resistor for MC cartridge is selected by pressing MC-R button. There are 10 options available, 10R
(also written as 10 or 10 ohms), 18R, 25R, 50R, 100R, 200R, 400R, 800R, 1600R, or 47K (also written as
47,000 or ohms).
Use the MC-R button to cycle through the options, until the closest one to the cartridge manufacturer’s
recommendation is displayed. If no recommendation is apparent, start by using the 1600R option.
There is a 47K setting in MC which is recommended for the higher output type MC cartridges giving out approx
1mV or more. If, however, connecting a high output MC cartridge to the MC input results in a excessively high
sound output, it is perfectly in order to move it to the MM input and select input and loading options accordingly.
Note: The MC input capacitor is fixed and cannot be changed. This capacitor does not affect loading at
such low impedances.
Trigger input and output
The unit can be triggered to switch on or off remotely by applying a ±4.5 to ±15V DC signal to the 3.5mm (”)
TRIGGER INPUT from an external triggering device. Any further devices to be triggered on/off may be
connected to the TRIGGER OUTPUT jack as it replicates the TRIGGER INPUT signal. This will form a chain of
devices that will switch on and off together. N.B. the on/off triggering action works from ANY device in the
chain, whether at the beginning, middle or end of the chain.
Cartridge - MC
RIAA 100R 470pF
Cartridge - MM
RIAA 47K 400pF
Cartridge - MM
RIAA 68K 50pF
Cartridge - MM
IEC 47K 50pF
OPERATION
(10 pages)
(11 pages)
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