Carvin CX420 Instruction Manual - Page 6
Setting Up The Sound System
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SETTING UP THE SOUND SYSTEM PA CABINET TWO-TRACK TAPE RECORDER EXTERNAL POWER AMP MONITOR SPEAKERS This section is a brief overview of what it takes to hook up a sound system using a CX series mixer. The overview will include some of the different possible setups and some basics on how to mix live sound. If you are new to using mixers, you should find this section very informative in helping to operate your sound system properly. If you are experienced with mixers, then you may find some of the information new or presented with a new approach that can help you as well. As always, experimentation is the key to success, so don't be afraid to use the controls to get a feel for what they do. 3 4 5 0 dB 2 6 1 7 8 2 CHANNEL 1110 9 12 50 13 30 15 22 POWER 19 17 PROTECT 3 2 4 5 0 dB 6 1 7 8 1 CHANNEL 11 10 9 12 22 30 50 13 19 17 15 1. INPUT CONNECTIONS FROM THE STAGE For live sound reinforcement or public address systems (P.A. Systems), the input signals to the mixer will come from the microphones and instruments on the stage. Each microphone or instrument to be amplified by the P.A. system must be connected to one of the mixer's inputs. It is preferred to have as many of the stage instruments as possible plugged into the mixer. This allows the best overall sound control of the instruments as they are mixed together and then amplified by the P.A. system. MAIN POWER TAPE SEND TAPE RETURN AMP PATCH MONITOR CX630 16K 8K 4K 2K 1K GRAPHIC EQ RETURN TAPE EFF RTN 500 8 8 9 7 9 7 0 10 456 REVERB 0 10 456 PHANTOM 250 1 3 1 3 2 2 EFFECTS 125 8 8 9 7 9 7 9 8 7 SEND EFF SEND 0 10 4 56 MONITOR 0 10 4 56 0 10 45 6 MAIN +12 8 4 0 4 8 -12 63 1 3 1 3 2 2 1 2 3 MIC LINE LEVEL dB 20 8 8 8 9 7 9 7 9 7 9 6 9 6 9 6 6 0 10 45 6 0 10 MON 4 5 6 0 10 ERFEFV 4 5 6 12 12 03 12 12 1 3 1 3 1 3 9 2 2 2 6 LOW 3 MID 3 0 3 12 12 HI 3 0 3 6 9 6 9 TO REAR SPEAKER OUTPUTS 6 MIC LINE LEVEL dB 20 8 8 8 9 7 9 7 9 7 9 6 9 6 9 6 5 0 10 4 56 0 10 MON 4 5 6 0 10 ERFEFV 4 5 6 12 12 3 0 12 12 1 3 1 3 1 3 2 2 2 9 6 LOW 3 MID 3 0 3 12 12 303 5 9 6 9 6 HI MIC LINE LEVEL dB 20 8 8 8 9 7 9 7 9 7 9 6 9 6 9 6 4 0 10 456 0 10 MON 4 5 6 0 10 ERFEFV 4 5 6 12 12 3 0 12 12 1 3 1 3 1 3 9 2 2 2 6 LOW 3 MID 3 0 3 12 12 HI 3 0 3 4 9 6 9 6 MIC LINE LEVEL dB 20 9 8 7 9 8 7 9 8 7 9 6 9 6 9 6 3 0 10 4 56 0 10 MON 4 5 6 0 10 ERFEFV 4 5 6 12 12 3 0 12 12 1 2 3 1 2 3 1 2 3 9 6 LOW 3 MID 3 0 3 12 12 303 3 9 6 9 6 HI MIC LINE LEVEL dB 20 8 8 8 9 7 9 7 9 7 9 6 9 6 9 6 2 0 10 456 0 10 MON 4 5 6 0 10 ERFEFV 4 5 6 12 12 3 0 12 12 1 3 1 3 1 3 2 2 2 9 6 LOW 3 MID 3 0 3 12 12 303 2 2. ON STAGE OPERATION The CX Series mixers are small enough to have on stage. The advantages to this are: a band member can operate the mixer so no extra person is needed, and also the microphone, 1/4" phone inputs, and speaker cables are short and plug directly into the mixer, leaving no cables for the audience to trip over. The only disadvantages are the band member / mixer operator, on stage, doesn't hear what the audience is hearing and because the mixer operator is a band member he can not react fast to problems with the "PA" system such as feedback and sudden volume changes. 3. REMOTE TO STAGE OPERATION Many times the mixer will be located a distance from the stage. This allows the performance to be monitored and mixed from the audience's perspective. Monitoring at a distance from the stage usually means employing a multi-cable cable or more commonly referred to as a "Snake" (available from CARVIN). Each of the microphones and instruments are plugged into the snake box at the stage and the snake cable carries all these signals to the mixer. At the mixer, the snake cable, which fans out to plugs corresponding to the jacks on the snake box, is plugged into the appropriate inputs and line level (pre-amp) outputs of the mixer. All snake cables are numbered, both on the snake box and the cable, to help in keeping track of which microphones are being plugged into which channels. It is a good idea at this point to label each of the mixer channels according to what instrument each will be controlling. This can be done with masking tape (Scotch brand #230 drafting tape) or another suitable 'light' sticking tape. The tape will give you a surface to write on, to properly label the channels. The (XLR) balanced low impedance format will ensure the best possible performance and lowest possible noise when operating with long cable lengths, such as a snake. 9 6 9 6 HI MIC LINE LEVEL dB 20 8 8 8 9 7 9 7 9 7 9 6 9 6 9 6 1 0 10 45 6 0 10 MON 4 5 6 0 10 ERFEFV 4 5 6 12 12 03 12 12 1 3 1 3 1 3 9 2 2 2 6 LOW 3 MID 3 0 3 12 12 HI 3 0 3 1 9 6 9 6 PA CABINET 11 8