6
Here is a typical amplifier setup:
MINUS
PLUS
PLUS
MINUS
RIGHT
LEFT
Channel 1
(-) (+)
(-)
(+)
Channel 2
INTERNAL BUS STRUCTURE
In order to gain access to the internal bus structure, you must first remove the top cover. Turn the amplifier so the
rear panel is facing your. The jumper modules may be seen on the circuit board just behind the level controls.
Below is the default setup for the ST55.2 amplifier. By arranging the jumpers allows you to configure the amplifier
for different applications. If you wish to use the amplifier as a stereo (two channel) amplifier, you need not change
any of the settings.
In order to reconfigure the ST55.2’s channels, remove the source control group jumper from its present position (if
necessary) and install it on the terminal you wish to select as the source for that channel. Make sure it has been
inserted on both terminal pins of the jumper modules. To complete the configuration, the volume group jumper
should be placed at either the ‘USE VOL’ or ‘NO VOL’ terminal depending on you configuration.
Note: A channel that is not being used in your configuration should have its jumper plugs installed at the default
position as shown above.
