Technology Showcase: Powered Mixers
Sep 2, 2009 12:00 PM, By Bennett Liles
Flexible all-in-one mixers are ready to tour.
Delivering 500W per channel into a 4Ω load, the EMX5016CF from Yamaha can handle up to 12 microphones and four stereo sources. It features 3-band EQ, gain trim, attenuator pads, high-pass filters on the mic channels, and one-knob compression control. Insert patch points allow external processing gear to be placed into the channel path. The 9-band digital graphic EQ offers vocal, dance, and speech presets and three user memories to store custom EQ curves. Frequency Response Correction (FRC) enables immediate custom EQ setup by connecting a microphone to the FRC input and then pressing Measure/Correct to measure the room response. Pressing the control a second time automatically sets the EQ for the optimum response. The Automatic Feedback Suppression senses where the feedback is building and introduces notch filters to counteract it in automatic mode, or it can allow manual control. Two Yamaha SPX effects processors provide 16 effects with editable parameters including reverb, echo, chorus, flanger, phaser, and distortion.
For real blasting power and loudspeaker processing, the Yorkville Sound PowerMax22 has four internal power amps. The mains deliver 800W per channel into 4Ω, and the monitors feed 275W each into 4Ω. The onboard effects processing operates in two modes. In mono, it acts as two independent monaural effects units. In stereo mode, the operator can use the Effect and Modify knobs to set up a total of 255 effects presets. The return effects masters allow the effects, either internally or externally generated, to be mixed to the stereo output and to the monitor 1 and 2 outputs complete with LED-indicated solo buttons. A handy feature is the stereo record output on a pair of RCA jacks. This output carries a signal that is after the fader and effects but before graphic EQ and loudspeaker processing. The loudspeaker processor curve control allows a choice of two low-frequency boost curves centered at 50Hz and 80Hz.
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