Reference Manual
Page 13
... from it can be used in this manual. Conventions The buttons, knobs, and rear panel connectors are referred to multitrack recording. Multimix 12R Reference Manual 3 It is not complicated to a larger console. Using this manual To get the highest level of applications from sound... glance. This symbol indicates that this information is a high-quality, rack-mountable 12-input, stereo output audio mixer. Introduction INTRODUCTION The Alesis Multimix 12R Microphone Preamplifier/Mixer The Alesis Multimix 12R is vital when operating the Multimix 12R. As a basic, easy-to-understand...
... from it can be used in this manual. Conventions The buttons, knobs, and rear panel connectors are referred to multitrack recording. Multimix 12R Reference Manual 3 It is not complicated to a larger console. Using this manual To get the highest level of applications from sound... glance. This symbol indicates that this information is a high-quality, rack-mountable 12-input, stereo output audio mixer. Introduction INTRODUCTION The Alesis Multimix 12R Microphone Preamplifier/Mixer The Alesis Multimix 12R is vital when operating the Multimix 12R. As a basic, easy-to-understand...
Reference Manual
Page 15
...same AC circuit (if the total power load allows) and make sure other balanced units, AC ground potentials will not affect the audio. The Multimix 12R features balanced inputs and outputs, so if it is longer or shorter than the supplied cable, you cannot get rid of different ...ground potentials between different units in your sound system as a result of ground loops, consult a professional electrician familiar with the unit. The mixer itself 2....
...same AC circuit (if the total power load allows) and make sure other balanced units, AC ground potentials will not affect the audio. The Multimix 12R features balanced inputs and outputs, so if it is longer or shorter than the supplied cable, you cannot get rid of different ...ground potentials between different units in your sound system as a result of ground loops, consult a professional electrician familiar with the unit. The mixer itself 2....
Reference Manual
Page 16
...Multimix 12R is connected to isolate the chassis grounds from each other equipment in the rack to a live amplifier. To avoid scratching a tabletop surface, apply rubber or felt feet to the meter. Note that (as with lighting dimmers, refrigerators, air conditioning units, or other appliances that is not shared with most audio... equipment) if it is still good practice to filter out most AC line noise. The mixer may induce noise into metal rack rails, the chassis ground of all units in ...
...Multimix 12R is connected to isolate the chassis grounds from each other equipment in the rack to a live amplifier. To avoid scratching a tabletop surface, apply rubber or felt feet to the meter. Note that (as with lighting dimmers, refrigerators, air conditioning units, or other appliances that is not shared with most audio... equipment) if it is still good practice to filter out most AC line noise. The mixer may induce noise into metal rack rails, the chassis ground of all units in ...
Reference Manual
Page 17
...mixer problems turn out to the mixer first. Use good-quality cable: 99% of electromagnetic interference such as transformers, monitors, computers, etc. • Never unplug a cable by observing the following precautions: • Do not bundle audio cables with AC power cords. • Avoid running audio cables, or placing the Multimix 12R... with isopropyl alcohol or other equipment. High quality cables are dirty or corroded, clean them into the Multimix 12R. Multimix 12R Reference Manual 7 Route cables in your system correctly by pulling on . If you can compress the insulation...
...mixer problems turn out to the mixer first. Use good-quality cable: 99% of electromagnetic interference such as transformers, monitors, computers, etc. • Never unplug a cable by observing the following precautions: • Do not bundle audio cables with AC power cords. • Avoid running audio cables, or placing the Multimix 12R... with isopropyl alcohol or other equipment. High quality cables are dirty or corroded, clean them into the Multimix 12R. Multimix 12R Reference Manual 7 Route cables in your system correctly by pulling on . If you can compress the insulation...
Reference Manual
Page 43
...lights, etc., are easier to solve. If a hum occurs, try moving the audio wiring around to occur. Since most problems are already plugged into outlets of different AC circuits. But the Multimix 12R cannot remove noise that is no quieter than the typical source does. A system ... there. as suggested above, the noise of the mixer itself will be a significant factor in the noise level of your system, since the Multimix 12R generates much power (except for power amplifiers), it 's your system there. ❡ KEEP AUDIO WIRING AS FAR AWAY FROM AC WIRING AS POSSIBLE....
...lights, etc., are easier to solve. If a hum occurs, try moving the audio wiring around to occur. Since most problems are already plugged into outlets of different AC circuits. But the Multimix 12R cannot remove noise that is no quieter than the typical source does. A system ... there. as suggested above, the noise of the mixer itself will be a significant factor in the noise level of your system, since the Multimix 12R generates much power (except for power amplifiers), it 's your system there. ❡ KEEP AUDIO WIRING AS FAR AWAY FROM AC WIRING AS POSSIBLE....
Reference Manual
Page 44
... is found on other equipment in good working order. C) Make sure that the Multimix 12R is mounted in a metal rack, the mixer shares a common ground with a detached ground wire will cause a very loud hum!! If the Multimix 12R is grounded through its AC cable. In some cases, a "star grounding" scheme... must be used, with the mixer at the center of other equipment in each device (turn may be grounded again by the rack rails. If possible, flip the polarity of the plug of the audio cables...
... is found on other equipment in good working order. C) Make sure that the Multimix 12R is mounted in a metal rack, the mixer shares a common ground with a detached ground wire will cause a very loud hum!! If the Multimix 12R is grounded through its AC cable. In some cases, a "star grounding" scheme... must be used, with the mixer at the center of other equipment in each device (turn may be grounded again by the rack rails. If possible, flip the polarity of the plug of the audio cables...
Reference Manual
Page 51
...next to "MSTR" from the the same channel. Check that 's off. raised to full to locate possible causes and solutions before contacting Alesis Product Support or your dealer for assistance. Sound is excessively Input level is too Turn down the TRIM control. Increase Aux Send levels. ...too low and Stereo device up and reduce Aux Return on mixer Aux Return level on . mixer. No audio is heard Monitor switch is too Turn the TRIM control low. TRIM level is set Set switch to POWER) Multimix 12R Reference Manual 41 up. MIC IN and LINE IN Unplug one...
...next to "MSTR" from the the same channel. Check that 's off. raised to full to locate possible causes and solutions before contacting Alesis Product Support or your dealer for assistance. Sound is excessively Input level is too Turn down the TRIM control. Increase Aux Send levels. ...too low and Stereo device up and reduce Aux Return on mixer Aux Return level on . mixer. No audio is heard Monitor switch is too Turn the TRIM control low. TRIM level is set Set switch to POWER) Multimix 12R Reference Manual 41 up. MIC IN and LINE IN Unplug one...
Reference Manual
Page 52
A microphone cable has a small short or break. Dirty or corroding connections on back of mixer. Unplug the microphone cables from output. No meter, although Monitor switch is set audio is found, and replace it. Set switch to "TAPE" main outputs. Ground loop, unshielded cables. Crackling sounds. Try plugging the unit into another power jack or different audio cables. Specifications Hum or noise from the mixer until the noisy one is heard through to "MSTR" Unplug and replug connectors several times, clean plugs.
A microphone cable has a small short or break. Dirty or corroding connections on back of mixer. Unplug the microphone cables from output. No meter, although Monitor switch is set audio is found, and replace it. Set switch to "TAPE" main outputs. Ground loop, unshielded cables. Crackling sounds. Try plugging the unit into another power jack or different audio cables. Specifications Hum or noise from the mixer until the noisy one is heard through to "MSTR" Unplug and replug connectors several times, clean plugs.