QSC HPR122i User Manual

Also see for HPR122i: Quick start guide User manual User manual User manual User manual

Contents

QSC HPR122i User Manual Manual pdf 9 page image

9Input ConnectionsFull-range models have one female XLR line-level input markedFULL RANGE LINE IN.Subwoofers have a second set of connectors, one for the leftchannel’s audio and one for the right channel’s audio.We recommend balanced connections be used. Balanced con-nections will reduce AC hum and interference, especially withlong cable runs. Unbalanced connections may be suitable forshort cables. The input impedance is 22k ohm for balanced con-nections or 11k ohm for unbalanced connections. The signal'ssource impedance should be less than 600 ohms.HPR122i, HPR152i and HPR153i: Insert the male XLR inputinto the jack marked FULL RANGE LINE IN. Ensure the connectoris fully seated.HPR151i and HPR181i: Insert the left channel’s XLR input intothe left channel’s (L) FULL RANGE LINE IN connector. Insertthe right channel’s XLR connector into the right channel’s (R)FULL RANGE LINE IN connector. If a single input signal isused, plug into either the L (left) or R (right) channel’s input.If two input signals are used, plug the left channel’s signalinto the connector marked FULL RANGE LINE IN L (the topinput connector) and the right channel’s signal into the con-nector marked FULL RANGE LINE IN R (the bottom input con-nector). When two input signals are applied, the subwoofer’sgain is automatically increased 6dB as the subwoofer willlikely be used with two full-range loudspeakers.Balanced inputs: Connect to the plug as shown.Unbalanced inputs: Connect to the plug as shown. Pin 3 andpin 1 must be connected with a jumper as shown.1= shield (ground)3= jumper to pin 12= plus (+)1= shield (ground)3= minus (-)2= plus (+)Full-range loudspeaker’s Input(IN) and Output (OUT) ConnectorsSubwoofer loudspeaker’s Input (IN)and Output (OUT) Connectors