OC03 M-14:2 Professional Stereo Mixer ELECTRONICS M-14:2 PROFESSIONAL STEREO MIXER ELECTRONICS
Contents Welcome Warning.........................................................................................................................................1 Unpacking ......................................................................................................................................2 Short Form Instructions.....................................................................................................................2 Installation Environment....................................
PROFESSIONAL STEREO MIXER Welcome All of the co-workers here at D.A.S ELECTRONICS are dedicated to providing excellent products with inherently good value, and we are delighted you have purchased one of our products. We sincerely trust this product will provide years of satisfactory service, but if anything is not to your complete satisfaction, we will endeavor to make things right. Welcome to D.A.
PROFESSIONAL STEREO MIXER Unpacking Although it is neither complicated to install nor difficult to operate your set, a few minutes of your time is required to read this manual for a properly wired installation and becoming familiar with its many features and how to use them. Please take a great care in unpacking your set and do not discard the carton and other packing materials. They may be needed when moving your set and are required if it ever becomes necessary to return your set for service.
PROFESSIONAL STEREO MIXER Installation Environment Never place this product in an environment which could alter its performance or reduce its service life. Such environments usually include high levels of heat, dust, moisture, and vibration. Important Safety Instructions 1. 2. 3. 4. 5. 6. 7. 8. Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with dry cloth. Do not block any ventilation openings.
PROFESSIONAL STEREO MIXER Features - 6MONO, 10MONO INPUT AND 4 STEREO INPUT Any sound source of microphones, cassette decks, electronic guitars, organs can be applied to the channel input. - MAIN MIX L/R AND ALT 3/4 OUTPUT Main mix L/R and ALT 3/4 are provided for convenient use. - 2 AUX RETURN AND 2 AUX SEND For convenient use of external equipment, AUX SEND and AUX RETURN function are provided. - CHANNEL EQUALIZER The 3 band equalizer are designed for ±15dB control on mono input channel.
PROFESSIONAL STEREO MIXER Front Panel 1. MONO INPUT SECTION 1 2 3 4 1. MIC INPUT A 3-pin XLR-type connector is used for balanced low impedance microphone inputs. (1: sleeve, 2: hot, 3: cold) Microphones of 50-600Ω line level devices can be connected here. When the PHANTOM switch is turned on, DC +48V will be supplied to pins 2 and 3 of these connectors.
PROFESSIONAL STEREO MIXER 2. BALANCED LINE INPUT CONNECTORS A standard 1/4" phone jack is used for balanced or unbalanced line level signals. Examples of line level signals include most electronic keyboards, synthesizers, turn-tables(with appropriate pre-amps), tape decks and the line outputs from other mixers. All input channel controls, including the variable GAIN control. TIP(Hot) SLEEVE(GND) RING(COLD) (1/4" Phone 3 Section Connector) 3.
PROFESSIONAL STEREO MIXER આ Modifications Mono channel Aux send 2 are post-fader. This modification changes Aux send2 to be pre-fader instead of post-fader Mono channel. - Aux send2 : post-fader ᆎ pre-fader If you want to convert them, carry out the modification described below to each mono channel you want to be altered. See below figure. 1) Power switch off, Remove AC cord. The work area is on the underside of the PCB board near the channel AUX SEND2 knob.
PROFESSIONAL STEREO MIXER 2. STEREO INPUT SECTION 1 2 3 4 5 6 7 8 1. STEREO INPUT JACKS These are unbalanced 1/4" phone jacks which input a stereo source with a nominal input and impedance of +4dB/600Ω. If a plug is inserted only in L/MONO, the same signal will be sent to both the L and R buses. The nominal input level for these jacks is -20dB ~ +14dB. 2. GAIN CONTROL (TRIM) According to the level of the input signal, use this knob to adjust the input to an appropriate level.
PROFESSIONAL STEREO MIXER 6. AUX 2 CONTROLS This knobs control the level of the signals sent to AUX 2 bus. The channel signals mixed by this bus have their overall level set by the AUX2 SEND Control to the AUX SEND 2 jack on the rear panel. The aux2 bus signal is also fed into the internal digital signal processor. Since this control is placed after the channel fader, the signal level will be affected by the channel fader setting. 7.
PROFESSIONAL STEREO MIXER 3. MASTER SECTION 1. MAIN MIX OUTPUTS These are balanced XLR type output jacks with a nominal output/impedance of +4dB/600Ω. These connectors transmit the MIX L/R outputs to the power amplifiers. which drives the main speakers. ELECTRONICS 2. MAIN INSERT L/R JACKS The insert jack sends one signal to the processing device and inserts the returned signal back into the Left and Right main mix signal paths.
PROFESSIONAL STEREO MIXER 8 9 10 11 8. HEADPHONES OUTPUT JACK (1/4" TRS STEREO JACK) These jacks (tip=left, ring=right, sleeve=GND) may be connected to external power amplifiers for headphone distribution, or you can plug our phones directly into the jack. Use only stereo phones! When a mono connector is plugged into the stereo connector, it connects both sides of the headphone amplifier to a single load.
PROFESSIONAL STEREO MIXER 14. PHONE GAIN CONTROL This control sets the level at the headphone jack. 15. TO MIX SWITCH When this switch is on the signal of each ALT 3/4 will be sent to the MIX L/R buses. 16. ALT 3/4 OUTPUT FADER This fader adjusts the final level of the combined stereo signal and send the ALT 3/4 output jacks. 17. MAIN MIX L/R MASTER FADERS These faders adjust the final level of the combined signals from all channels.
PROFESSIONAL STEREO MIXER Rear Panel 1. INPUT/OUTPUT CONNECTORS A 1. CHANNEL INSERT I/O JACK These are input/output jacks located between the head-amplifier and the high pass filter. The nominal input level and impedance is 0dB/600Ω, and the nominal output level and impedance is 0dB/10kΩ. These jacks allow you to own graphic equalizers, compressors, noise filters, or other devices. Tip:Output(Send to external device) Sleeve:Ground Ring:Input(Return from external device) 2.
PROFESSIONAL STEREO MIXER 2. INPUT/OUTPUT CONNECTORS B MODEL NO. M-14 : 2 PROFESSIONAL STEREO MIXER ELECTRONICS 1. POWER SWITCH This switch turns the power ON/OFF. When in the ON position, the power indicator will light. 2. PHANTOM POWER SWITCH When is the ON position, +48V DC phantom power will be provided between pin 2 and pin 3 of the XLRtype jack. If you do not need phantom power, be sure to turn this to the OFF position. 3.
PROFESSIONAL STEREO MIXER Points to Remember - In all cases, use good quality twin screened audio cable. Check for instability at the output. - Always connect both conductors at both ends, and ensure that the screen is only connected at one end. - Do not disconnect the mains earth from each piece of equipment. This is needed to provided both safety and screen returns to the system star point.
PROFESSIONAL STEREO MIXER Connections D.A.S ELECTRONICS products are wired to reflect accepted wiring practices used throughout the world.
PROFESSIONAL STEREO MIXER Grounding on the Road Many of the above procedures are difficult to use on the road. For example, the telescoping shield concept is nearly impossible to use on a portable cable. Similarly, it is a difficult and time consuming process to search for a water pipe ground every time the system is moved from one performance to another. Yet portable systems can be extremely complex, and may have major grounding problems.
PROFESSIONAL STEREO MIXER CONNECTOR AND CABLE CONFIGURATIONS REMOTE DEVICE DESCRIPTION REMOTE SIDE OF CABLE (Connector Type) CABLE White(Red)/HIGH Black/LOW 2 A. XLR** 2 3 3 Shield/GND (XLR) 1 Floating or Balanced low impedance: most professional equipment line in and line out, microphones. 1 White(Red)/HIGH Black/LOW 2 T R S 3 B. TRS PHONE Shield/GND (XLR) 1 White(Red)/HIGH Black/LOW 2 Unbalanced C. STANDARD low impedance: some PHONE professional equipment and microphones.
PROFESSIONAL STEREO MIXER Applications ELECTRONICS M-14:2 PROFESSIONAL STEREO MIXER M-14:2 19
PROFESSIONAL STEREO MIXER Block Diagram 20 M-14:2
PROFESSIONAL STEREO MIXER Specifications................................................. *0dB=0.775Vrms, 0dBV=1Vrms Specifications - GENERAL Maximum Output Level (0.5% T.H.D at 1kHz) +24dB(MIX L/R) @600Ω +20dB(ALT 3/4, AUX1~ 2, CTRL ROOM) @600Ω +20dB(INSERT) @10kΩ More than 100mW(HEADPHONES) @40Ω T.H.D <0.
PROFESSIONAL STEREO MIXER Specifications ..............................................0dB=0.
PROFESSIONAL STEREO MIXER Service Procedures Take steps to insure the problem is not related to operator error or other products within the system. Information provided in the troubleshooting portion of this manual may help with this process. Once it is certain that the problem is related to the product contact your warranty provider as described in the warranty section of this manual. Schematic A Schematic is available by contacting your warranty provider.
NOTE
ELECTRONICS Inter-M, Ltd. (Korea) began operations in 1983. Since then, Inter-M has grown to become one of the largest manufacturers of professional audio and commercial sound electronics equipment in the world. Inter-M has gained worldwide recognition for its own branded products, as well as private label manufacturing of electronics sold under other names (OEM).
