BP2-MM Moving Magnet Phono Preamplifier
5
level analog preamplifier using RCA cables.
Cartridge Loading
Some moving magnet cartridges perform best when
presented with a capacitive load. The BP2-MM offers
four settings for capacitive loading which can be
set internally with jumpers. The desired loading for
your cartridge may be found in the documentation
included with the cartridge. Note that the attached
interconnects also present some capacitive load.
Consult the documentation included with your
interconnect for specifics of your model.
To set additional loading, disconnect the BP2-
MM from the power supply. Remove the top by
unscrewing each of 4 screws (2 on each side) using a
T-8 Torx screwdriver. Lift the top straight off. Locate
the jumpers for each channel highlighted in green
below and labeled JC1 and JC2 respectively.
The minimum value is 100pF and maximum is
400pF. No jumpers should be connected for 100pF
value. Adding jumpers will increase capacitance in
100pF increments. Capacitance is set per channel.
Each channel should be set identically to ensure no
difference in tonal balance between left and right
channels.
One channel shown. No jumpers connected. loading
capacitance is 100pF.
One channel shown. One jumper connected adding
capacitance to form total of 200pF capacitance.
