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MIXING CONSOLE
Owner’s Manual
Thank you for purchasing the YAMAHA MX12/6 or MX20/6 Mixing Con-
sole. Both the MX12/6 and MX20/6 mixers are designed to provide the user
with an ideal balance of operability, functionality, and simplicity.
In order to get the most out of your MX12/6 or MX20/6 mixer and its
functions, and to enjoy years of trouble-free use, please read this Owner’s
Manual thoroughly and keep it in a safe place for future reference.
Features Contents
• The MX12/6 offers 12 input chan
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FCC INFORMATION (U.S.A.) 1. IMPORTANT NOTICE: DO NOT MODIFY THIS UNIT! This product, when installed as indicated in the instructions contained in this manual, meets FCC requirements. Modifications not expressly approved by Yamaha may void your authority, granted by the FCC, to use the product. 2. IMPORTANT: When connecting this product to accessories and/or another product use only high quality shielded cables. Cable/s supplied with this product MUST be used. Follow all installation instructio
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Important 1 Important Read the following before operating the MX12/6, 20/6 Warnings • Do not place a container with liquid or small metal objects on top of this unit. Liquid or metal objects inside this unit are a fire and electrical shock hazard. • Do not allow water to enter this unit or allow the unit to become wet. Fire or electrical shock may result. • Connect this unit’s power cord only to an AC outlet of the type stated in this Owner’s Manual or as marked on the unit. Failure to do so is
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2 Front & Rear Panels Front & Rear Panels Channel Control Section Channels Channels q GAIN Control 1-8 (MX12/6) 9-12 (MX12/6) Adjusts the input level of the signal entering the mixer to an 1-16 (MX20/6) 17-20 (MX20/6) optimum level. (Monaural) (Stereo) To obtain an optimum balance between the S/N ratio and dynamic range, adjust the level so that the peak indicator w occasionally lights. q -60 to -16 indicates the MIC input adjustment level, -34 to +10 w indicates the LINE input adjustment level.
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Front & Rear Panels 3 y EFFECT Control Controls the level of the signal sent from each channel to the EFFECT bus. This control is located after the channel fader so its level will also be affected by the channel fader setting. When a stereo channel is used, L and R channel signals are combined and sent to the EFFECT bus. u PAN Control (MX12/6:CH1-8, MX20/6:CH1-16) BAL Control (MX12/6:CH9-12, MX20/6:CH17-20) The PAN control knobs set the position within the stereo field of each signal that is sen
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4 Front & Rear Panels Master Control Section q ST Master Fader Controls the level of the signal that is sent to the ST OUT jacks. !4 o !3 w MONO Control Controls the level of the signal (the monaural signal that is formed by combining the signals from the STEREO bus) that is sent to the MONO OUT jack. e GROUP 1-4 Faders !2 r TO ST Switch Controls the level of the GROUP 1-4 signals, and w sends the signals to their respective GROUP OUTPUT 1-4 jacks. i Also, when the TO ST switch is ON (>), the si
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Front & Rear Panels 5 u DIGITAL EFFECT • PROGRAM Select Switch Selects a program from the built-in digital effects. VOCAL ECHO 1 VOCAL REVERB 1 HALL 1 PLATE 1 VOCAL ECHO 2 VOCAL REVERB 2 HALL 2 PLATE 2 VOCAL ECHO 3 VOCAL REVERB 3 HALL 3 PLATE 3 VOCAL ECHO 4 VOCAL REVERB 4 ROOM GATE REVERB • PARAMETER Control Controls parameters (effect level, speed, etc.) of the selected effect program. • ON Switch Switches the built-in digital effect ON (>) or OFF (?). When set to OFF, the signal from the built
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6 Front & Rear Panels Connector Section e qwrt q INPUT Jacks (MX12/6:CH1-8, MX20/6:CH1-16) • MIC Balanced XLR type microphone input jacks (1:Ground, 2:Hot, 3:Cold). These input jacks are compatible with 50-600Ω microphones. • LINE Balanced TRS phone type line input jacks (T:Hot, R:Cold, S:Ground). These input jacks are compatible with 600Ω line level devices. Unbalanced phone plugs can be connected but noise may enter the signal if the cables are too long or if the location is susceptible to ele
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Front & Rear Panels 7 Rear Panel w i u y t r e q q INSERT I/O Jack (MX12/6:CH1-4, MX20/6:CH1-8) These are input/output jacks that are positioned between the equalizer and fader of the input channel. to the input jack of They have a nominal input/impedance of 0dB/ the external processor 600Ω and a nominal output/impedance of 0dB/ to the INSERT I/O 10kΩ . jack These jacks can be used to connect devices such Sleeve Tip as a graphic equalizer, compressor, noise filter, etc. Sleeve The TRS type phone
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8 Front & Rear Panels • EFFECT This is an impedance balanced phone type output jack with a nominal output/impedance of +4dB/ 600Ω . The EFFECT bus signal is sent from this jack. This jack is used to send the signal to an external effector, etc. r RETURN L (MONO), R Jacks These are unbalanced phone type line input jacks with a nominal input/impedance of +4dB/600Ω . The signal received by these jacks is sent to the STEREO bus, AUX1 and AUX2 buses. These jacks are normally used to receive a return
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Applications 9 Applications Example 1) Sound Reinforcement for a live performance Main Speakers Sub Woofer, etc. Monitor Speakers Effector Power Amplifier Power Amplifier Power Amplifier AUX 1 AUX 2 (PRE) Headphones SEND SEND INSERT I/O ST OUT MONO OUT C-R/PHONES CD Recorder, DAT, etc. TAPE IN REC OUT GROUP OUT 1 – 4 MTR EFFECT SEND Effector RETURN Set the POST Switch to “?” (AUX2=PRE). C-R/PHONES Output and Meter Select Switch Group Select Switches Channel Faders ST Master Fader INPUT GROUP 1-4
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10 Applications Example 2) Home Recording Powered Speakers Headphones (for monitoring) C-R/PHONES GROUP OUT 1 AUX 2 (POST) 2 SEND Effector 3 4 LINE IN RETURN (Audio Card, etc.) INSERT Effector I/O Master Recorder ST OUT Computer LINE OUT INPUT INPUT (Audio Card, etc.) (ST CH) Tone Generator, Synthesizer, Microphone, etc. Procedure q Connect a tone generator, synthesizer, microphone, etc. to the INPUT jacks, and connect a master recorder such as an MD or CD to the ST OUT jacks. w
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Supplement 11 Supplement Specifications General specifications Frequency response 20Hz—20kHz +1dB, -3dB @+4dB, 600Ω (Input Gain control at minimum level) (CH MIC INPUT to ST, GROUP OUT/AUX, EFFECT SEND) Total harmonic distortion <0.1% (THD+N) @+14dB, 20Hz—20kHz, 600Ω (CH MIC INPUT to ST, GROUP OUT/AUX, EFFECT SEND) Hum & Noise -128dB Equivalent input noise (Rs=150Ω , 20Hz—20kHz, INPUT GAIN=Max., -95dB Residual output noise Input Sensitivity=-60dB) -64dB (68dB S/N) ST OUT: * Measured with
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12 Supplement Input Specifications Input level Input Gain Input Nominal Connector type connectors Control impedance impedance Sensitivity *1 Nominal Max. before clipping -60 -80 dB (0.078mV) -60 dB (0.775mV) -40 dB (7.75mV) MIC INPUT 5kΩ 50-600Ω mics XLR-3-31 type *2 (1-n *5) -16 -36 dB (12.3mV) -16 dB (123mV) +4 dB (1.23V) -34 -54 dB (1.55mV) -34 dB (15.5mV) -14 dB (155mV) LINE INPUT 50kΩ 600Ω lines Phone jack (TRS) *2 (1-n *5) +10 -10 dB (245mV) +10 dB (2.45V) +30 dB (24.5V) -34 -54 dB (1.55
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Supplement 13 Block and Level Diagrams MX12/6, 20/6 — Owner’s Manual from DC Power Supply PHANTOM [0dB] [0dB] (8ch/sw) PEAK SUM INV GROUP OUT 1 1-2 PAN [+4dB] MIC INPUT [0dB] [0dB] GROUP1 Fader [-60~-16dB] HA 3-Stage EQ BA [-10dB] 3-4 Ch.Fader CH INPUT LINE INPUT PAD [-10dB] GAIN ST [0dB] MX12/6:1~4ch [-34~+10dB] TO ST [-60dB~-16dB] MX20/6:1~8ch [-34dB~+10dB] [-6dB] [0dB] AUX1 INSERT I/O SUM INV GROUP OUT 2 [0dB] [+4dB] AUX2 POST GROUP2 Fader [-10dB] EFFECT [0dB] from DC Power Supply SUM INV GRO
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YAMAHA CORPORATION V629990 R2 1 CP 16 Pro Audio & Digital Musical Instrument Division P.O. Box 3, Hamamatsu, 430-8651, Japan NP Printed in Taiwan
