4
3
S
ETUP
3.1
I
NITIAL
S
ETUP
Setup consists of installing the tubes (if needed), selecting the Moving Magnet (MM) or Moving Coil
(MC) input, and setting the cartridge loading and MC gain (if needed). The factory settings for these
should work well with most MM cartridges, and with low-output MC cartridges, so you might not need
to adjust anything.
Installing the Tubes
Fig. 3.1: Tube positions.
Note the tube positions above. To install the tubes, carefully align the tube pins with the socket and
push down, gently rocking the tube slightly from side-to-side to ease the pins into the socket. Never
twist or force the tube; the glass shell is easy to break if the pins are bent.
Moving Magnet or Moving Coil Input
MM cartridges connect to the MM input (obviously), and low-output MC cartridges connect to the MC
input.
In general, we recommend that high-output MC cartridges with an output >2 mV be connected to the
MM input. We recommend that high-output MC cartridges with outputs <2 mV be connected to the MC
input, with low gain setting, as described below. However, almost all high-output MC cartridges can also
connect to the MM input if you prefer (and if there is enough gain for your system).
The MM or MC input is selected with SW1 on the back. To avoid a loud transient, turn the volume
control on your amplifier to minimum before adjusting the position of SW1 or connecting or
disconnecting cables. Be sure to connect the ground post on the back of the phono stage to the ground
post on your turntable.
12AU7
12AX7
5751
Front
