Reference Manual
Page 11
.../Mixer 3 Using this manual 3 Grounding Instructions 4 Installation 5 Unpacking ...5 AC power...5 Grounding 5 Use clean power 6 Power switch 6 Mounting ...6 Connections 7 Inputs ...7 Cable common sense 7 Microphone Inputs 8 Phantom power 9 Line-level devices (synthesizers, CD players, video 10 TAPE IN jacks 12 Phonograph turntables 13 Do not connect any of the following to any input of the Multimix 12R 13 How to connect effect devices and signal processors 14 Effects via Aux Send and Aux Return 14 In-line processing using the INSERT jacks (compressors & equalizers 15 Outputs...
.../Mixer 3 Using this manual 3 Grounding Instructions 4 Installation 5 Unpacking ...5 AC power...5 Grounding 5 Use clean power 6 Power switch 6 Mounting ...6 Connections 7 Inputs ...7 Cable common sense 7 Microphone Inputs 8 Phantom power 9 Line-level devices (synthesizers, CD players, video 10 TAPE IN jacks 12 Phonograph turntables 13 Do not connect any of the following to any input of the Multimix 12R 13 How to connect effect devices and signal processors 14 Effects via Aux Send and Aux Return 14 In-line processing using the INSERT jacks (compressors & equalizers 15 Outputs...
Reference Manual
Page 15
...affect the audio. Connect the Multimix 12R to other devices in your AC outlet is properly connected to the specified power using the AC cable supplied with this manual 3. If ...cable is essential for user safety and low noise. Multimix 12R Reference Manual 5 Grounding CONNECT THE MULTIMIX 12R TO A PROPERLY GROUNDED OUTLET ONLY. The Multimix 12R features balanced inputs and outputs, so if it is longer or shorter than the supplied cable, you may substitute an approved standard NEMA-to your sound system as a result of literature along with the unit. DO NOT USE ADAPTERS...
...affect the audio. Connect the Multimix 12R to other devices in your AC outlet is properly connected to the specified power using the AC cable supplied with this manual 3. If ...cable is essential for user safety and low noise. Multimix 12R Reference Manual 5 Grounding CONNECT THE MULTIMIX 12R TO A PROPERLY GROUNDED OUTLET ONLY. The Multimix 12R features balanced inputs and outputs, so if it is longer or shorter than the supplied cable, you may substitute an approved standard NEMA-to your sound system as a result of literature along with the unit. DO NOT USE ADAPTERS...
Reference Manual
Page 17
... of all connections to the Multimix 12R with AC power cords. • Avoid running audio cables, or placing the Multimix 12R itself . If something goes wrong, check the cable and its connection to the mixer first. Although quality cables cost more, they can be cable or connector problems. Use the best quality cable you must connect or disconnect inputs while power is on, make sure the channel fader and [TRIM] are turned all...
... of all connections to the Multimix 12R with AC power cords. • Avoid running audio cables, or placing the Multimix 12R itself . If something goes wrong, check the cable and its connection to the mixer first. Although quality cables cost more, they can be cable or connector problems. Use the best quality cable you must connect or disconnect inputs while power is on, make sure the channel fader and [TRIM] are turned all...
Reference Manual
Page 19
... through the microphone cable. If this is turned on. If none of microphones (called condenser microphones) require a DC power supply from the mixer. If any microphones while [PHANTOM POWER] is not possible, make sure the channel's fader and [TRIM] are down , make the connections, then turn on the [PHANTOM POWER] switch on the Multimix 12R's back panel to connect all connections with the Multimix 12R powered off . Connections Phantom power Certain types of your microphones need phantom power, turn on the [PHANTOM POWER] switch on the...
... through the microphone cable. If this is turned on. If none of microphones (called condenser microphones) require a DC power supply from the mixer. If any microphones while [PHANTOM POWER] is not possible, make sure the channel's fader and [TRIM] are down , make the connections, then turn on the [PHANTOM POWER] switch on the Multimix 12R's back panel to connect all connections with the Multimix 12R powered off . Connections Phantom power Certain types of your microphones need phantom power, turn on the [PHANTOM POWER] switch on the...
Reference Manual
Page 20
... channel fader and trim are not designed to maximum) for the level loss, you may sound better if they're plugged directly into the [LINE IN] jacks, if you raise the [TRIM] level. They have a 2conductor output jack that is about 1/3 of the Multimix 12R's [LINE IN] jacks, with the [TRIM] level set to handle two sources at the same time. The Multimix 12R has more than enough gain (up the line level input...
... channel fader and trim are not designed to maximum) for the level loss, you may sound better if they're plugged directly into the [LINE IN] jacks, if you raise the [TRIM] level. They have a 2conductor output jack that is about 1/3 of the Multimix 12R's [LINE IN] jacks, with the [TRIM] level set to handle two sources at the same time. The Multimix 12R has more than enough gain (up the line level input...
Reference Manual
Page 21
... caused by phantom power if it's turned on the stereo channels). Multimix 12R Reference Manual 11 Balanced sources often feature XLR outputs. This will give you plug a +4 dBu line source into a line input is approximately 11 o'clock (12 o'clock on ). The [LINE IN] jack on the Alesis Multimix 12R may receive a +22 dBu (balanced or unbalanced) maximum input. Connections Balanced +4 dBu line level sources: Professional recording and processing equipment typically provides a balanced, 3-conductor signal output that is...
... caused by phantom power if it's turned on the stereo channels). Multimix 12R Reference Manual 11 Balanced sources often feature XLR outputs. This will give you plug a +4 dBu line source into a line input is approximately 11 o'clock (12 o'clock on ). The [LINE IN] jack on the Alesis Multimix 12R may receive a +22 dBu (balanced or unbalanced) maximum input. Connections Balanced +4 dBu line level sources: Professional recording and processing equipment typically provides a balanced, 3-conductor signal output that is...
Reference Manual
Page 22
... channels, it is recording correctly. • Another use the Multimix 12R to monitor a mixdown to a 2track deck through your headphones. (If you plugged your mixdown deck into the line inputs on the rear panel are designed for the [TAPE IN] jacks is to play a CD or tape into a PA system, automatically turning off all the microphones into the main PA system when the front panel MSTR/TAPE switch is set...
... channels, it is recording correctly. • Another use the Multimix 12R to monitor a mixdown to a 2track deck through your headphones. (If you plugged your mixdown deck into the line inputs on the rear panel are designed for the [TAPE IN] jacks is to play a CD or tape into a PA system, automatically turning off all the microphones into the main PA system when the front panel MSTR/TAPE switch is set...
Reference Manual
Page 25
... to connect anything to the other input of the effect, because most effect units use the stereo inputs only to a stereo chorus while the right input is used for a stereo reverb). The INSERT connector is a TRS (tip/ring/sleeve) 1/4" jack which consists of an insert send (the tip of a single channel after its preamplifier and [TRIM] control, but before the Multimix 12R's own EQ, aux sends, and fader. In-line processing using the INSERT jacks (compressors & equalizers) Some signal...
... to connect anything to the other input of the effect, because most effect units use the stereo inputs only to a stereo chorus while the right input is used for a stereo reverb). The INSERT connector is a TRS (tip/ring/sleeve) 1/4" jack which consists of an insert send (the tip of a single channel after its preamplifier and [TRIM] control, but before the Multimix 12R's own EQ, aux sends, and fader. In-line processing using the INSERT jacks (compressors & equalizers) Some signal...
Reference Manual
Page 28
... the stereo output of the amp using . If so, connect the [MAIN OUT BALANCED] jacks of the Multimix 12R to switch between the mixer and the amp to control feedback. This will allow you 're using a 3-conductor cable, with a balanced/unbalanced output. To a mono system If your amplifier can accept balanced inputs. In most stage monitor situations, we recommend connecting a third-octave graphic equalizer such as : • Headphone cue feed for multitrack recording •...
... the stereo output of the amp using . If so, connect the [MAIN OUT BALANCED] jacks of the Multimix 12R to switch between the mixer and the amp to control feedback. This will allow you 're using a 3-conductor cable, with a balanced/unbalanced output. To a mono system If your amplifier can accept balanced inputs. In most stage monitor situations, we recommend connecting a third-octave graphic equalizer such as : • Headphone cue feed for multitrack recording •...
Reference Manual
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...] phono jacks to a larger mixing console. If your recorder is made properly, the Multimix 12R will be connected to the left and right inputs of the external mixer. If the mixer has "SUB IN" jacks, connect to two line-level inputs on the front panel. To a stereo tape recorder If you do, check to see what level those . Connections To another mixer The main or monitor outputs of the Multimix 12R may be affected by the [PHONES/MONITOR] level control on...
...] phono jacks to a larger mixing console. If your recorder is made properly, the Multimix 12R will be connected to the left and right inputs of the external mixer. If the mixer has "SUB IN" jacks, connect to two line-level inputs on the front panel. To a stereo tape recorder If you do, check to see what level those . Connections To another mixer The main or monitor outputs of the Multimix 12R may be affected by the [PHONES/MONITOR] level control on...
Reference Manual
Page 30
... used for monitoring. The [TRIM] control is effectively the same as connecting studio-quality microphone preamps directly to an ADAT via the [INSERT] jacks is the only level control for more . Hooking a Multimix 12R to the input of the mixer. See the ADAT manual for the ADAT inputs; A basic 8-track digital recording system with the ADAT patched into the [INSERT] jacks of the Multimix 12R are two ways to use 1/4" TRS to 1/4" mono cables. NOTE: To hear the microphone or line input signal...
... used for monitoring. The [TRIM] control is effectively the same as connecting studio-quality microphone preamps directly to an ADAT via the [INSERT] jacks is the only level control for more . Hooking a Multimix 12R to the input of the mixer. See the ADAT manual for the ADAT inputs; A basic 8-track digital recording system with the ADAT patched into the [INSERT] jacks of the Multimix 12R are two ways to use 1/4" TRS to 1/4" mono cables. NOTE: To hear the microphone or line input signal...
Reference Manual
Page 33
... 600-ohm headphones; The PHONES control may be louder at microphone level, low enough to line level inputs wherever possible. The internal headphone amplifier outputs the maximum power allowed by safety standards. However, connect the monitor output to be the same as the MAIN OUT, as long as the front panel [MSTR/TAPE] switch is designed for most stereo headphones. When that will be patched into the microphone-level inputs of the headphones will be...
... 600-ohm headphones; The PHONES control may be louder at microphone level, low enough to line level inputs wherever possible. The internal headphone amplifier outputs the maximum power allowed by safety standards. However, connect the monitor output to be the same as the MAIN OUT, as long as the front panel [MSTR/TAPE] switch is designed for most stereo headphones. When that will be patched into the microphone-level inputs of the headphones will be...
Reference Manual
Page 37
... the noise of signal overload. Set all the way up ). Turn down the TRIM knob until the average signal level on the meter is about 2/3 up ). 4. Adjust the [TRIM]knob until the PEAK LED stops flashing. Multimix 12R Reference Manual 27 Operating Instructions Metering/Unity Gain method This method gives you are within 6 dB of most PA or live recording environments. 1. Observe the Multimix 12R's LED Meter. With the mic or line level signal...
... the noise of signal overload. Set all the way up ). Turn down the TRIM knob until the average signal level on the meter is about 2/3 up ). 4. Adjust the [TRIM]knob until the PEAK LED stops flashing. Multimix 12R Reference Manual 27 Operating Instructions Metering/Unity Gain method This method gives you are within 6 dB of most PA or live recording environments. 1. Observe the Multimix 12R's LED Meter. With the mic or line level signal...
Reference Manual
Page 38
... mixers, the Multimix 12R's [MASTER] fader is designed for more information.) Aux Send levels The nominal or unity gain points of the Aux 1 and Aux 2 controls are only a starting point. The stereo channels' TRIM controls can be run between the -10 dB and 0 dB position (about 1/2 to +15 dB gain. It also discourages inexperienced operators from +10 dB to +60 dB gain, since the very low output voltages of microphones need that gain...
... mixers, the Multimix 12R's [MASTER] fader is designed for more information.) Aux Send levels The nominal or unity gain points of the Aux 1 and Aux 2 controls are only a starting point. The stereo channels' TRIM controls can be run between the -10 dB and 0 dB position (about 1/2 to +15 dB gain. It also discourages inexperienced operators from +10 dB to +60 dB gain, since the very low output voltages of microphones need that gain...
Reference Manual
Page 40
... be heard, the output of panning and EQ on the mixer's individual Aux Sends and STEREO AUX RETURN and the effect device's own controls to the effect device is returned to have its effects will connect AUX 2 to the channel LINE IN or STEREO LINE IN jacks. But sending signal to get good, clean, quiet results. ✪ Improper level setting is the most common cause of noise and distortion problems. To be returned...
... be heard, the output of panning and EQ on the mixer's individual Aux Sends and STEREO AUX RETURN and the effect device's own controls to the effect device is returned to have its effects will connect AUX 2 to the channel LINE IN or STEREO LINE IN jacks. But sending signal to get good, clean, quiet results. ✪ Improper level setting is the most common cause of noise and distortion problems. To be returned...
Reference Manual
Page 44
... 20' from all of the inputs and outputs of the Multimix 12R are balanced, the ground does not have to be used, with the mixer at the amplifier end. Cables with a detached ground wire will cause a very loud hum!! But since almost all outboard devices and tape machines except for the mixer and control room monitor power amp. To avoid the possibility of...
... 20' from all of the inputs and outputs of the Multimix 12R are balanced, the ground does not have to be used, with the mixer at the amplifier end. Cables with a detached ground wire will cause a very loud hum!! But since almost all outboard devices and tape machines except for the mixer and control room monitor power amp. To avoid the possibility of...
Reference Manual
Page 48
...] jacks to the inputs of the mixdown deck until its meters give the desired reading. Set the MASTER fader up to the maximum, and adjust the input controls of your control room monitor amplifier. 4. check to make sure the output of the mixer for mixdown; Put the mixdown deck into record/pause mode, play the ADAT, and adjust the mix and level controls of the mixdown deck is set to nominal (unity gain). Connect...
...] jacks to the inputs of the mixdown deck until its meters give the desired reading. Set the MASTER fader up to the maximum, and adjust the input controls of your control room monitor amplifier. 4. check to make sure the output of the mixer for mixdown; Put the mixdown deck into record/pause mode, play the ADAT, and adjust the mix and level controls of the mixdown deck is set to nominal (unity gain). Connect...
Reference Manual
Page 50
Applications Monitoring AUX 1 in the PHONES jack If you may want to check that mix using the TAPE IN jacks, use Y-cords to connect the AUX 1 SEND to the TAPE IN jack(s) at the same time it feeds the monitor amplifier. Use the front panel [PHONES/MONITOR] switch to the MAIN OUTPUTS, and are using AUX 1 as a monitor feed, you are not using the headphones. If you've connected the PA or recorder to select between the main and aux 1 feeds.
Applications Monitoring AUX 1 in the PHONES jack If you may want to check that mix using the TAPE IN jacks, use Y-cords to connect the AUX 1 SEND to the TAPE IN jack(s) at the same time it feeds the monitor amplifier. Use the front panel [PHONES/MONITOR] switch to the MAIN OUTPUTS, and are using AUX 1 as a monitor feed, you are not using the headphones. If you've connected the PA or recorder to select between the main and aux 1 feeds.
Reference Manual
Page 51
.... channel. control. No audio is heard Monitor switch is lit. up the TRIM noisy, faders must be low. raised to full to locate possible causes and solutions before contacting Alesis Product Support or your dealer for assistance. Sound from effect is AUX 2 send level is Check insert jack individual channel. switch on (on an INSERT jack is Turn Output of the jacks being used on sources from PHONES or to POWER) Multimix 12R Reference Manual 41 connected to a higher level...
.... channel. control. No audio is heard Monitor switch is lit. up the TRIM noisy, faders must be low. raised to full to locate possible causes and solutions before contacting Alesis Product Support or your dealer for assistance. Sound from effect is AUX 2 send level is Check insert jack individual channel. switch on (on an INSERT jack is Turn Output of the jacks being used on sources from PHONES or to POWER) Multimix 12R Reference Manual 41 connected to a higher level...
Reference Manual
Page 60
..., 20 cable, 9 clipping, 13 compressor, 17 direct output using INSERT jack, 18 distortion, 28, 31 effect, 16 EQ, 31 Fader, 30 feedback, 20, 21 gain, 30 ground loop, 35 isolating from rack, 8 grounding, 6, 7 guitars, 12 Headphone, 20, 25 headroom, 13, 34, 48 HIGH, 41 Impedance, 10, 48 INSERT cables, 22 INSERT jack, 17, 24 in 2-mixer system, 24 Levels, 13, 28, 48 diagram, 52 LINE IN, 12 LOW, 41 MAIN OUT -10...
..., 20 cable, 9 clipping, 13 compressor, 17 direct output using INSERT jack, 18 distortion, 28, 31 effect, 16 EQ, 31 Fader, 30 feedback, 20, 21 gain, 30 ground loop, 35 isolating from rack, 8 grounding, 6, 7 guitars, 12 Headphone, 20, 25 headroom, 13, 34, 48 HIGH, 41 Impedance, 10, 48 INSERT cables, 22 INSERT jack, 17, 24 in 2-mixer system, 24 Levels, 13, 28, 48 diagram, 52 LINE IN, 12 LOW, 41 MAIN OUT -10...