Behringer DSP1100P user manual Audio connections, Output Cable Input

does not comply, then it is necessary to switch the operating voltage to the correct supply requirements BEFORE turning on the unit, otherwise the unit could be severely damaged. You will find this combined fuse holder/voltage selector at the back, adjacent to the IEC receptacle. IMPORTANT: This does not apply for general export models which are built for one operating voltage only.

The AC voltage selection is defined by the position of the fuse holder. If you intend to change the operating voltage, remove the fuse holder and twist it by 180 degrees before you reinsert it. Matching the two markers monitors the selected voltage.

+If the unit is switched to an other operating voltage, the ruse rating must be changed. See the technical specifications in the appendix

A safety fuse protects the unit from serious defects. If the fuse blows, this is a warning sign and always indicates that the circuit is overloaded. The fault must always be repaired before the fuse is replaced. If the safety fuse is faulty and needs replacing after the unit is repaired, please make sure that you replace it only with the identical type and rating. NEVER use fuses of different ratings or cover faulty fuses with aluminium foil. This can cause fire and electric shocks and will endanger your life and the lives of others.

5.3 Audio connections

As standard, the BEHRINGER FEEDBACK DESTROYER PRO is installed with electronically servo-balanced inputs and outputs. The new circuit design features automatic hum and noise reduction for balanced signals and thus allows for trouble-free operation, even at high operating levels. Externally induced mains hum etc. will be effectively suppressed. The automatic servo-function recognizes the presence of unbalanced connectors and adjusts the nominal level internally to avoid level differences between the input and output signals (correc- tion 6 dB).

+Please ensure that only qualified persons install and operate the FEEDBACK DESTROYER PRO. During installation and operation the user must have sufficient electrical contact to earth. Electrostatic charges might affect the operation of the FEEDBACK DESTROYER PRO!

Output			Cable		Input
Pin 1					Ground
	2	1	Shield	1	2
Pin 2	= (+) Signal		(+) Signal + Hum		Positive	(+)Hum + Signal
		3	(-) Signal + Hum		3
Pin 3	= (-) Signal				Negative	(-)Hum + Signal
						2 x Signal
			RFI and Hum			= Signal + 6 dB

Fig. 5.1: Compensation of interference with balanced connections

26 5. INSTALLATION