Mackie 802-VLZ4 Owners Manual - Page 12

802VLZ4 1 17 16 2 4 5 6 7 3 18 13 14 15 12 8 9 10 11 2. Line Ins (Channels 1-2) These inputs share circuitry (but not phantom power) with the mic preamps, and can be driven by balanced or unbalanced sources at ­almost any level. You can use these inputs for v­ irtually any signal you'll come across, from instrument levels as low as -40 dB to operating levels of -10 dBV to +4 dBu, since there is more gain available than on line inputs 3-8. To connect balanced lines to these inputs, use a 1⁄4" Tip-Ring-Sleeve (TRS) plug, the type found on­­ s­ tereo headphones. To connect unbalanced lines to these ­inputs, use a 1⁄4" mono (TS) phone plug or standard i­nstrument cable. The line inputs 1-2 are a good place to connect older instruments that need more gain. You can correct weak levels by adjusting the ­corresponding channel's gain control [7]. 3. Stereo Line Ins (Channels 3-4, 5-6, and 7-8) These fully-balanced inputs are designed for ­stereo or mono, balanced or unbalanced signals. They can be used with just about any professional or semi-pro i­nstrument, effect or CD player. In the stereo audio world, an odd-numbered channel usually receives the "left signal." For e­ xample, you would feed the 802VLZ4's line inputs 5-6 a stereo signal by inserting the device's left output plug into the channel 5 jack, and its right output plug into the channel 6 jack. When connecting a mono device (just one cord), always use the left (mono) input (jacks 3, 5, or 7) and plug nothing into the right input (jacks 4, 6, or 8)- this way the signal will appear on both sides. This trick is called "jack normalling." 4. Channel Insert (Channels 1-2) These jacks are where you connect serial effects such as compressors, equalizers, de-essers, or filters. Since most people don't have more than a few of these g­ adgets, we've included inserts for just the first two channels. If you want to use this kind of processing on channels 3 through 8, simply patch your source through your ­processor before you plug into the 802VLZ4. The channel insert points are after the gain [7] and low cut [5] controls, but before the channel's EQ [25-27] and level [21] controls. The send (tip) is low-impedance (120 ohms), capable of driving any line-level device. The return (ring) is high-impedance (over 2.5 k ohms) and can be driven by almost any device. ring tip sleeve (TRS plug) SEND to processor tip This plug connects to one of the mixer's Channel Insert jacks. ring RETURN from processor See Appendix B for details and drawings about insert cables, and a diagram showing three ways to use the jacks. Besides being used for inserting external devices, these jacks can also be used as channel direct outputs; post-gain, post-low cut, and pre EQ. In fact, our Onyx mic preamps have become so famous, that people buy the mixers just to have some of these preamps in their arsenal. 12 802VLZ4