JBL MPA1100 Owner's Manual

Contents

JBL MPA1100 Owner's Manual Manual pdf 6 page image

5InstallationFigure 4. Neutrik Speakon Connector Wiring for Speaker OutputsExploded view (side)Connection TerminalsInputsBalanced input connections are available via barrier strip or XLR connectors. The unitis shipped with pin 2 high (see subsequent instructions to change polarity). As usual,for unbalanced inputs, the unused terminal should be terminated to ground (thenegative input terminals on the barrier strip are located adjacent to the ground termi-nal for this purpose).Input sensitivity is 1 Vrms, and impedance is 20 kilohm balanced, 10 kilohmunbalanced, as is typical of JBL amplifiers.The input jacks are located on a removable panel which has a toggle switch for(1) bridged-mono (2) normal stereo, or (3) paralleling the inputs. See page 2 for moreinformation about the Open Input Architecture slots.OutputsSpeaker connections are made via standard red/black 5-way binding posts, or byNeutrik NL4FC Speakon connectors. The Speakon for each channel uses the standardwiring of:Pin 1- = Speaker GroundPin 1+ = Speaker HotPin 2- = [Not used]Pin 2+ = [Not used]In addition, a central Speakon is provided with the standard stereo wiring of:Pin 1- = Ch 1 GroundPin 1+ = Ch 1 HotPin 2- = Ch 2 GroundPin 2+ = Ch 2 Hot2–2+1+1–NEUTRIKSPEAKONNL4FCSWISS MADE