5) SW1 – Four Position DIP Switch (Figure 1)
This bank of four switches are numbered 1 through 4 from left to right. Switch #1 and #2
assign the output from Input #1 to CH2 and CH1 respectively, and switch #3 and #4 assign
the output from Input #2 to CH2 and CH1 respectively. Weather you use CH #1 or CH #2
output as left or right is your choice, but the normal convention would be to select CH #2 as
Right and CH #1 as Left.
When the individual rockers on the four position DIP Switch are flipped down toward the edge
of the card closest to the switch the individual switch is On. In the opposite position the switch
is Off. With all the four positions switched to the Off position, the module will not pass a
signal.
2) JP100 – Selects Normal Mode, Bridged Mono Mode or Parallel
Mono Mode (Figure 2)
The legend on the circuit board will indicate which position
to use for each of the output modes. Normal Mode
configures the output in a conventional two channel stereo
mode.
Bridged Mono Mode configures the output to combine
the power of the two independent
channels into one larger channel. See the operating
instructions for your amplifier for the available power at
various loads. Parallel Mono Mode configures the module
to drive both channels equally with a mono signal so that
each channel is reproducing the same audio.
Note: When using the MSMP in Bridged Mono or Parallel
Mono configurations, configure the output of the various
input stages to CH 2 only. If you are using the MSMP
module in a CV1501 or CV2501 single channel amplifier,
you should configure the outputs to CH 1 only, on switch
SW1. (Figure 1)
4) JP3 – Enables the 15V Phantom Power Feature (Figure 2)
If you are using a Condenser Microphone or Electret
Microphone requiring 15V or less Phantom Power this
jumper enables this feature. JP3 enables the phantom
power for Input #2.
Configuring the MSMP / MSMPX for Use
(5)
Be sure that you have properly set the following jumpers and
configuration switches:
1) JP101 – Input Sensitivity for Input 1 (Figure 1)
This jumper gives you three selections for the input
sensitivity 0dB which is referenced to 0.775Vrms, -6dB
which is referenced to 0.3875Vrms and +6dB referenced
to 1.55Vrms. This selection should match the output of
your source component as closely as possible.
If your source component had an output voltage of 0.5Vrms,
your best choice would be to use the –6dB or 0.3875Vrms
sensitivity. This setting would insure the best signal to
noise ratio and the module can accept the excess voltage
without a problem. Setting a sensitivity greater than
the source components output voltage will prevent
the amplifier from producing full output.
Figure 1
Figure 2