MRC SYMPHONY 77 User Manual

MRC SYMPHONY 77 SOUND SYSTEM

Congratulations! You have just purchased one of the most
advanced digital model railroad sound systems available
today. The MRC Symphony 77 will bring you the sounds of
railroading whether or not you have a train layout. Just plug it in
and enjoy. The sounds are divided into two independent
groups, emanating from their own speakers. There are also
two modes of operation depending on the era you like- Steam
or Diesel.

Operational Information:

1. A wall transformer is included in the box, please plug
into the rear jack of the right hand speaker prior to
plugging it into your wall outlet. Turn the power switch
on, the pilot LED should light, and sounds will come
from the speakers depending on which mode you have
chosen.

2. Use the mode switch to pick your mode, either steam or
diesel, (D=diesel/S=steam), and the idling sounds of
that type of loco will play from the right side speaker,
with the associated type of random noises playing from
the left speaker. (Both modes can not be played
together).

3. Use the speed buttons to make that type of locomotive
go from idle to full speed and anywhere in between by
repeatedly pressing the up or down buttons.

4. The volume knob controls the volume of the right side
speaker sounds only. You can adjust the volume, while
operating the speed up/down buttons to emulate the
sounds approaching or fading away.

5. All sounds associated with the sound push buttons can
be re-triggered. You can repeat the same sound before
the sound ends to make it seem longer. Or you can start
a new sound to cut off the current sound.

6. You can play one sound from each group at the same
time.

7. Only one slide switch sound can be activated at one
time, (right side position). The unit may not operate
properly if more than one slide switch is activated.

8. The mode switch, speed up/down buttons and the
volume control knob operate independently of the sound
buttons, and do not interfere with the playing of the
sounds.

9. There are numerous choices for either the diesel horn
or the steam whistle. Use the select button for that group
to change the sound of the horn/whistle to the one you
prefer. The current horn/whistle selected will play first,
and then keep pressing the select button to find the one
you like. Then every time you press either the horn or
whistle button, the one you selected will play.

10. The diesel horn or the steam whistle will always be
ready to play regardless of which mode you are in.

11. Just activating the rail clack slide switch will not make it
play. It is synchronized to the speed of the locomotive,
(either mode). Of course if the locomotive is at idle,
there are no rolling wheels clacking over rail joints.

12. There are also two types of coupling sounds. If you do
not like the one playing you can change it to the other.

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