Mackie SRM650 Owners Manual - Page 10

SRM550/SRM650 Powered Loudspeakers SRM550/SRM650 Loudspeaker: Rear Panel Features 8 9 10 SIG/OL SIG/OL 4 7 35 6 2.Power Switch Press the top of this rocker switch inwards to turn on the loudspeaker. The front panel Running Man logo will glow with happiness...or at least it will if the loudspeaker is plugged into a suitable live AC mains supply and the main logo switch [10] is disengaged. Press the bottom of this rocker switch inwards to turn off the loudspeaker. As a general guide, SRM loudspeakers should be turned on last, after any mixer or other signal source. As such, they should also be turned off first. This will reduce the possibility of any turn-on or turn-off thumps and other noises generated by any upstream equipment from coming out of the speakers. 3.XLR and 1/4" Combo Inputs Both channels feature 1/4" Wide-Z™ inputs with combo jacks that may accept balanced/unbalanced XLR and 1/4" connections. The gain range of the Wide-Z inputs may handle anything from an instrument level to a high-output mic signal. Simply connect an XLR, TRS 11 or TS connector into the channel and adjust the gain accordingly. Please be aware of the position of the gain knob [4]. 2 1 POWER CONSUMPTION 200W 1.Power Connection This is a standard 3-prong IEC power connector. Connect the detachable power cord (included in the packaging with the loudspeaker) to the power receptacle, and plug the other end of the power cord into an AC outlet. Make sure that the AC power is matched to the AC power indicated on the rear panel (below the IEC receptacle). Disconnecting the plug's ground pin is dangerous. Don't do it! NEVER connect the output of an amplifier directly to the input of the loudspeaker. This could damage the input circuitry of the active loudspeaker. They are wired as follows, according to standards specified by the AES (Audio Engineering Society): Balanced XLR Input Connector Pin 1 - Shield (ground) Pin 2 - Positive (+ or hot) Pin 3 - Negative (- or cold) SHIELD 2 HOT COLD 3 1 1 3 2 SHIELD COLD HOT Balanced XLR Input Connector 10 SRM550/SRM650 Powered Loudspeakers