GA 15
5
Connecting the amp
Mains voltage
Please ensure that your local area’s mains power voltage matches the mains
voltage indication on the unit’s rear label
before
you connect the unit to an AC
mains power outlet! If in doubt ask a technician.
Mains connection
Use the mains cable enclosed to connect the unit’s AC socket
o
on the rear
panel to a properly wired and earthed IEC power socket.
Input, Headphones
Plug a guitar into the INPUT socket
q
. Use the PHONES socket
y
to connect
headphones with a 1/4” plug. This disconnects the speaker outputs
f
.
Effects Send/Return
Use these sockets
a
&
s
to bring an external effects device into the signal
path of the amp. The effects loop on these amplifiers is a Serial loop, i.e. the
effects signal is not mixed to the dry signal, it replaces the dry signal. This is
especially suitable for connecting sound processors like e.g. a compressor.
If you want to connect a reverb unit or the like, you might find the amount of
effects signal coming out of the speaker to big. Then please reduce the mix
ratio between dry and wet signal on the effects device.
Line Out
Use this output
d
to connect a power amp, if you need even more power to
play your venue.
Operating the amp
Switching on / off
Make sure, that a proper speaker load is connected, then press on the upper
part of the POWER switch
i
, to switch the unit on. Press on the lower part of
the POWER switch
i
, to switch the unit off.
To disconnect the unit from the mains, disconnect the power plug from the
socket.
Standby
Most tube amps have a standby switch, that cuts the internal high voltage from
the valves, but not the heating voltage. During breaks or in order to preheat
the amp you should put the STANDBY switch
u
into the OFF position with the
POWER switched on. This will increase the lifetime of the tubes.