Page 9
The Sound Chips
Your Bachmann Shay kit has specially programmed chips to allow the engine to
produce the actual chuffing directly from the cylinders. For general information about
the sound chips, please refer to the full instruction manual.
The Battery
If your Shay is to be used with track power, you will need to install the 9-volt rechargeable
nickel cadmium battery. To conserve space in the Spectrum® Shay installation, we have chosen
to include a 9-volt battery with your Shay kit instead of the larger 6-volt gel-cell battery. Please
note that the use rating for the 9-volt battery is 7.2 volts. There are 9-volt batteries with higher use
voltages, but they are not appropriate for the BIG SOUND™ system. When we refer to a 9-volt
battery in our drawings and written instructions, it is use rated at 7.2 volts.
To insure correct operation of your sound system, make sure your battery is fully charged the
first time you run it or after is has been stored for an extended period. Batteries lose a small
amount of charge sitting idle.
When you open your kit, the BIG SOUND™ board
already has installed a battery snapcap in positions 4 and 5
on the P1 terminal block; the red wire is positive (4) and
the black wire is negative (5). To install the
battery, simply snap it into place matching the
battery terminals with the cap terminals. That's
it! Also installed in the sound board is a blue
jump wire between positions 3 and 5.
This jump wire must be installed when you use a 9-volt
battery. If you decide to use a 6-volt sealed lead-acid battery instead, you would
remove the snapcap and blue jump wire. Be sure to install the red (positive) wire into
position 4 and the blue (negative) wire into position 5 if you use a 6-volt gel-cell
battery. The screw-down terminals have a wire protector inside the holes, but more
than one wire will fit in. You may have to loosen the screw all the way, insert the wires
together, and then tighten the screw.
– black wire
+ red wire
P1
1
2
3
4
5
6
7
8
P3
9V NiCd
–
blue jump wire
+
