Mackie MR10Smk3 Owners Manual - Page 7

Owner's Manual 5. Signal Outputs Connect these output jacks to the input jacks of studio monitors. Balanced 1/4" female connectors are provided for the left and right outputs. The frequency range depends on where the crossover level [8] is set. These output jacks are wired as follows, according to standards specified by the AES (Audio Engineering Society): Balanced 1/4" TRS Hot (+) Cold (-) Shield (Ground) Tip Ring Sleeve RING SLEEVE SLEEVE RINGTIP 7. Polarity Switch This switch - when left - sends a normal (0˚) polarity of the signal into the subwoofer amplifier. It has no effect on the signal at the outputs. This switch - when right - reverses the polarity of the signal going into the subwoofer amplifier by 180˚. It has no effect on the signal at the outputs. There is no right or wrong setting for this switch. Listen to the overall blend of the subwoofer with the rest of the system and select the switch position that gives you the best sound for your audience. In fact, your system may vary when positioned differently and in alternate venues. Don't be afraid to experiment with the position of the polarity switch. See page 9 for more information. TIP Balanced 1/4" Connectors RING TIP SLEEVE 6. Auto Power Switch and LED This 3-position switch turns the amplifiers on or off, or sets them to automatic mode. Use this switch to set the MR10Smk3 to your preferred mode of operation. • In the OFF position, the power amplifiers are off and the MR10Smk3 subwoofer produces no sound. Low-level circuitry is still active, but the power consumption of the circuitry is minimal. • Flip the switch to the ON position and the power amplifiers are live and operate normally. • When this switch is in the AUTO position, the amplifiers turn on and off depending on the prescence or absence of an input signal. An input signal of at least -40 dBu activates the auto-on function. A silent period greater than 13 minutes activates the auto-off function. 8. Crossover Level The MR10Smk3 crossover allows you to choose a crossover frequency for studio monitors, ranging from 40 Hz to 180 Hz. Listed below are the recommended crossover frequencies for each MRmk3 full-range monitor, but use them as a guideline. Set the crossover level to what sounds best to your ears. • MR5mk3 : 57 Hz • MR6mk3 : 46 Hz • MR8mk3 : 40 Hz 9. Input Level MR10Smk3 studio subwoofers expect a line-level signal at its input. Use this control to adjust the sensitivity of the input section according to the signal strength at its input. • Balance the subwoofer to your desired low-frequency output level and adjust the crossover [8] to your desired setting. The LED above the switch will illuminate GREEN indicating that signal is present in the MR10Smk3 subwoofer. The LED above the switch will illuminate RED indicating that the MR10Smk3 subwoofer is being pushed too hard. Turn down the main mix level on the mixer (or other input source) or input level [9] on the subwoofer. 10. Custom-Tuned Rear Shelf Port The custom-tuned rear shelf port uses the radiation from the rear of the woofer cone to extend the lowfrequency response of the speaker. The size of the port is carefully designed with respect to the volume of the cabinet and the characteristics of the woofer to produce low-frequency extension. Owner's Manual 7