User manual MACKIE QUAD EQ

[. . . ] 4-CHANNEL DIGITAL GRAPHIC EQUALIZER OWNER'S MANUAL QUAD EQ Quad EQ Important Safety Instructions 1. Install in accordance with the manufacturer's instructions. 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. [. . . ] Press BYPASS again to leave Bypass mode. Owner's Manual 11 Quad EQ 15. Press a CHANNEL SELECT Button (A, B, C or D) and the NOISE button, then several interesting things will happen: · · The audio input to the currently-selected channel is interrupted. 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. Press EDIT [13] (blinks) and then NOISE (blinks). 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]. Press the KNOB or EDIT to exit the edit mode. 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. You will often have NOISE and MIC selected at the same time. 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. [. . . ] 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. Final determination of warranty coverage lies solely with LOUD Technologies. [. . . ]