User manual MACKIE QUAD EQ

[. . . ] 4-CHANNEL DIGITAL GRAPHIC EQUALIZER OWNER'S MANUAL QUAD EQ Quad EQ Important Safety Instructions 1. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not defeat the safety purpose of the polarized or grounding-type plug. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. [. . . ] Pink noise appears at the output of the Quad EQ to play in your speaker system. · Press RTA if you want to see this noise. If you have stereo-linked channels, then the noise will appear in both channels. The microphone input is still live, allowing you to use the microphone to sample the noise playing in your system. (Press Mic to do this. ) If the audience is present, you may be tarred and feathered (unless the noise is an improvement over the band). · · · NOISE EDIT function This function allows you to adjust the output level of the noise generator. The default level is off, to prevent the accidental turn-on of a hot noise signal through a speaker system. The KNOB [19] can then be used to adjust the level from off, to the range of ­50 dB to 0 dB, as displayed in the DISPLAY [20]. When you turn on the noise, it will come on at the last level you have set. The default level is off, and it needs to be edited to adjust the level of the noise (see below). Once it has been set to a suitable level, and you follow the first step to turn on the noise, it will turn on at the last level it was set to. When the noise is playing, you can use the measurement microphone to set up, analyze, and equalize your system. The response from your microphone will show the effect of room reflections, standing waves, and the output characteristics of your speakers, boosting and cutting the level across the frequency band. You can then use the Filter buttons to adjust the EQ of problem areas. For example, if a large level boost is present in a certain frequency range, this area will be more susceptable to feedback. See details of the MIC button for more information about using the measurement microphone. The noise source also comes in very handy for testing your system, as a quick check that all of your speakers are working correctly. We made it so you have to press a CHANNEL SELECT button and then the NOISE button to have the noise come out to play. This prevents you from accidentally turning on the noise during a heavy thrash-speed-metal concert, or during a memorial service for a sound engineer who turned the noise on accidentally at a similar concert. 12 QUAD EQ 16. FILTER button This button provides you with access to the variable high-pass and low-pass filters of the current EQ channel. Pressing the FILTER button engages and disengages these two pass filters at their currently edited settings. For the high-pass filter, the signal level of the frequency range below the filter frequency is attenuated by an amount determined by the high-pass filter slope. In other words, it rolls off the lows (less boom-boom). Owner's Manual The high-pass filter can be reduce any low- used to frequency effects such as stage rumble, or microphone handling. In another example, you might have speakers which do not reproduce frequencies below 60 Hz very well. You can set the high-pass filter frequency to 60 Hz, so your amplifiers do not receive much signal level at frequencies below this, and do not waste power. [. . . ] The address of your closest authorized service center will be given to you by Technical Support, or from our website. IMPORTANT: Make sure that the Service Request Number is plainly written on the shipping carton. LOUD Technologies reserves the right to inspect any products that may be the subject of any warranty claims before repair or replacement is carried out. LOUD Technologies may, at our option, require proof of the original date of purchase in the form of a dated copy of the original dealer's invoice or sales receipt. [. . . ]