Recommendations; Amplifier - KAHAYAN Proaudio 8x4 MIDI Selector Operator's Manual

Listed below are the most important recommendations for the use of the
8x4 Selector:
1- To avoid any equipment failures its vital to connect to the 8x4 Selector the
following things: the instrument, the amplifier inputs, the amplifier outputs and
the speakers. The initial connection should be with the amplifiers turned off or
Stand by.
2- Once everything has been connected with cables with soldered
connectors you can use the 8x4 MIDI Selector with all the amplifiers
permanently switched on. Its not neccesary to use the Stand By mode each
time that you want to change the amplifier.
3- In the case where some speaker outputs are not being used, be carefull
not to select them to avoid the amplifiers functioning without being charged.
4- This Selector contains an input mute system and phantom charge for the
amplifiers which have not been selected.
5- We recommend, to avoid any possible ground noise (This is not mandatory
and may the type of amplifier configuration you use you will not have ground
noise), that only one of the amplifiers is connected to the electric ground.
Preferably the most powerful amplifier or that which has the highest
consumption. By doing this avoid hum noise caused by ground loops.
NOTE: That doesn´t mean that the other amplifiers are not connected to the
ground. They are connected through the Selector. See the folllowing chart:

AMPLIFIER 1

(MOST POTENCIAL AND THE
ONLY ONE CONNECTED TO
THE ELECTRIC GROUND)

RECOMMENDATIONS

AMPLIFIERS 2,3 ... 8
(NOT CONNECTED TO THE
ELECTRIC GROUND)
5
NOTE: We recommend that a
technician disconnect internally
the plug socket into which the
electric ground goes. Also you
can use ''duct tape'' to cover the
pin ground but it
recommended.
is not