RJM Amp Gizmo, User Manual, Page: 14 / 22

Controlling Multiple Devices
Each of the switching jacks on the A
MP
G
IZMO
is electrically isolated
from the others. Because of this, it’s possible to safely control multiple
devices. For example, you could control an amplifier that has three
channels and two switchable functions, plus an effects device that has
two switchable functions – using just one A
MP
G
IZMO
. This could be
done in several ways:
•
Connect the amplifier to the “To Amplifier” jack using an
appropriate custom cable. Connect the effects device to the
“Switch 7/8” jack using a ¼” cable.
•
Connect the amplifier to the “Switch 1/2”, “Switch 3/4” and
“Switch 5/6” jacks using ¼” cables. Connect the effects device
to the “Switch 7/8” jack using a ¼” cable.
These are only two possibilities – there are many more configurations
that can be used. As long as you connect only one device to each jack,
you have a safe configuration.
Don’t use a Y cable to control two different pieces of equipment from a
single jack! That could lead to ground loops or, even worse, damage
your equipment.
An important thing to note is that, although they are electrically
isolated, the amplifier jack and ¼” jacks are not independently
switched. For example, if you press the Switch 1 button , the Switch 1
pin of the “To Amplifier” jack and the Switch 1 half of the “Switch
1/2” jack will both be turned on (i.e. shorted to connector ground) at the
same time. The same is true for all of the eight switchable functions –
each one simultaneously controls a pin on the “To Amplifier” jack and
the corresponding conductor on one of the four ¼” jacks.
You can take advantage of this arrangement if you have two amplifiers
that need to be switched at the same time. If you use the appropriate
cables, you can make the two amps switch channels and functions
simultaneously – one connected using a custom cable and the other
using ¼” cables.
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