User manual
8
Balanced XLR Jack Connection
Connection With The Mains
Connect the SL 4120 unit to the mains via the IEC mains inlet using the 13A UK IEC
cord supplied. Connect the SL 4240 unit to the mains via the captive mains cord.
The earth has to be connected.
Switch the unit on. After switching on the speaker system, wait 8 - 10 seconds before you turn the
volume control up in order to avoid speaker damage.
CAUTION! Increase the level of each channel up to the point where the clip LEDs illuminate.
Always check the sound pressure level with a meter in order to keep to the legal threshold.
Cleaning and Maintenance
We recommend a frequent cleaning of the product. Please use a soft lint free and moistened
cloth. Never use alcohol or solvents.
There are no serviceable parts inside the product except for the fuse. Maintenance and service
operations are only to be carried out by authorised dealers.
Replacing the fuse
Only replace the fuse by a fuse of the same type and rating.
Before replacing the fuse, unplug the mains lead.
Should you need any spare parts, please use genuine parts.
Should you have any further questions, please contact your dealer.
CAUTION
DANGER TO LIFE DISCONNECT
FROM THE MAINS BEFORE
STARTING MAINTENANCE
OPERATION
PROBLEM CAUSE SOLUTION
No power The power cord is not con-
nected.
Check the power cord and any
extension cables
No sound The power cord of the
respective product is not
connected properly or not at all.
The connection socket or the
plug is dirty.
Check the power cord and if
the plugs are properly
connected with the sockets.
Clean the socket, and/or the
plug.
Noise The input signal is too strong. Reduce the input signal via the
gain control.
Distorted sound Load impedance is to low. Check the load impedance
vs amplier specication, and
reduce if required.