Mackie 406M Owner's Manual - Page 20

not hurt most dynamic mics. Check the microphone's user manual if you're not sure. Caution: Turn all output levels down before operating this switch to avoid the possibility of a "pop" in your speakers. Connecting a line-level input to an XLR input connector with the phantom power switched on could damage the output of the source device. We recommend using the 1/4" jacks for line-level inputs. PHANTOM POWER CH 1-8 BREAK (MUTES CH 1-6) When the switch is in the OUT position, the main mix is routed to the inputs of both amplifiers. For the mono versions (406M, 408M, 808M), the same signal is routed to the inputs of both amplifiers. You must have another amplifier to power your monitor speakers. When the switch is pushed IN, the main mix is routed to the input of the MAIN power amp, and the monitor mix is routed to the input of the MONITOR power amp. You can still connect up to two speakers to each amplifier output, since there are two parallel SPEAKER OUTPUT jacks for each amplifier on the back panel. Just remember to maintain a 2 ohm load or greater for each amplifier. Note: On the stereo versions (408S, 808S), the left and right signals are summed together just prior to the MAIN power amp input when the POWER AMP ROUTING switch is pushed in. BREAK Switch As in "take a break." Push this switch in during your breaks and the mono channels (1-6), monitor send, and effects send are muted so you don't run the danger of something going haywire during your break, like having your system start feeding back or having some would-be poet jump up on stage and start reciting his latest epic. This switch doesn't affect the TAPE IN or the stereo channels (7&8) so you can go ahead and run your cassette or CD player while you are on break. POWER AMP ROUTING This handy switch provides the flexibility to use the internal power amplifiers to power both the main and monitor outputs, or to power two main speakers with the internal amplifiers and use a separate power amplifier to power the monitor speakers. COMPRESSOR Pushing this switch in activates a circuit at the input to the power amplifiers that senses the signal level and reduces the possibility of driving the amplifier into clipping. Clipping creates distortion that not only sounds bad, but can actually damage your loudspeakers. We recommend that you leave this switch pushed in (unless you hate your speakers). TAPE IN LEVEL You can connect a tape deck or CD player to the PPM Series and play back prerecorded music during your breaks. The tape signal is added to the main signal path just after the RUMBLE REDUCTION switch and just prior to the MAIN MASTER control. This is a stereo control, but for the mono versions (406M, 408M, 808M), the left and right inputs are summed. POWER AMP ROUTING STEREO MAINS LEFT = MAIN RIGHT = MONITOR EFFECTS (OVERRIDES INTERNAL EFX) EFX FOOT SWITCH SEND 408S 2 X 250W STEREO L POWER AMP IN MAINS R POWER AMP IN MONITOR LINE OUT LEFT RETURN RIGHT RETURN L MIXER OUT R MIXER OUT COMPRESSOR OUT IN OO TAPE IN U L R +15 LEVEL L R TAPE OUT Stereo Version Connector Section 20