______________________________________________________________________________
Operating Manual ver. SP640-EN-1.1 |9
Choose a safe mounting location, so as to prevent the cables can be
stepped on or create tripping hazards.
Before making connections between mixer and speakers, make sure the
mixer volume is turned down.
In the connection panel there are two Speakon NL4 connectors referred as
‘IN’ and ‘OUT’.
IN is the input connector and must be connected to the amplifier,
‘OUT’ is a
LINK OUT and can be connected to other systems.
In the sp640 both the LF and HF drivers are connected to pins 1+/1
– of the
NL4 connector.
Channel 2 has been linked from In to the out.
Recommended configuration in basic stereo system is represented below:
Bracket
with Screws
Pole Mount
Plate
Mixer
Amplifier
O
u
tp
u
t
A
O
u
tp
u
t
B
In
p
u
t
A
In
p
u
t
B
NL4 Pin Configuration
Pins 1+ and 1-
Used
Pins 2+ and 2-
Not Used