SPL TwinTube, User Manual

Page: 15 / 52

15
Analog Elemental Series
Rear Panel | Connections and Switches
Power connection and fuse
Connect the power cord to the rear MAINS INPUT socket. Transformer, power cord and case
connection conform to VDE, UL and CSA requirements.
The fuse is accessible from outside and placed right behind the flap right from the socket.
Fuse ratings are 315 mA slow blow (230 volts) or 630 mA slow blow (115 volts).
Voltage Selector
The rear panel VOLTAGE selector sets the local line voltage (115 V position: 110-120 volts/6o Hz,
230 V position: 220-240 volts/50 Hz). The diagram shows the correct switch position for 230 V
power supply.
BEFORE you connect electrical power make sure that the VOLTAGE selector setting reflects
the correct local power line voltage.
Power switch
Use the POWER switch on the rear panel to turn the unit on or off. The VU-meters on the front
panel will light on as soon as you turn the unit on, regardless of the position of the ACTIVE
push button. Thus, they fulfill a second function as power indicators.
GND Lift
The rear panel GND LIFT switch eliminates hum by separating the internal ground from the
unit’s housing ground. Hum can, for example, result when this unit’s housing has a common
ground connection with other devices that might have a different ground potential. The switch
is usually deactivated to retain the shielding of the housing.
Channel Strip Switch (Ch. 1 OUT = Ch.2 IN)
The channel strip switch connects two modules internally with each other, as long as the
signal flow allows for it. For instance, with an Analog Elemental unit consisting of a preamp
and a processing module (Channel Strip configuration). When the switch is set to „ON“, the
output signal of the preamp feeds the input of the processing module directly. This simpli-
fies the signal flow and makes it unnecessary to connect the output and input of the modules
externally via cables.
Ch. 1 OUT = Ch. 2 IN
Ch. 1 OUT = Ch. 2 IN
ON
OFF