How To Use This Manual This manual is divided into the following sections describing the various modules and functions of the X2. Though we recommend you take time to read through the entire manual once carefully, those having general knowledge about mixers should use the table of contents and index to reference specific functions while using the console.
The EQ section uses film capacitors in a gyrator filter design, with plenty of headroom available so that boosting a band doesn’t cause distortion. The X2 uses fully balanced +4 dBu inputs and outputs on 1/4" jacks, plus three 56- ®...
Basic Principles of Mixing & Multitrack Recording The function of the X2 Mixer, or any recording console for that matter, is to provide control of volume, tone and spatial positioning of signals from microphones, electronic instruments, and tape machines, and then to route these signals to a monitor system and tape recorder so they can be recorded and heard.
0 VU on the meters of an analog multitrack tape machine, or -15 dB on the inserts of a digital multitrack tape machine, such as the Alesis ADAT. However, the transient peaks of instruments such as percussion may exceed this average level by 10 to 15 dB.
Recorder/Mix Systems The X2 is designed to be extremely flexible, as evidenced by the channel module design. This is where signals are mixed, EQ’d and routed to the Aux sends, Groups and Left and Right Master outs. Each channel provides a Tape In connector, where signals return from the multitrack recorder.
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SOLO and MUTE buttons. In the studio, the Group output usually is connected to the inputs of a multitrack recorder, such as the Alesis ADAT via the TAPE OUT jacks. During mixdown, the Groups may be “subgrouped” or assigned to the L-R Master mix, so that the Group modules can be used to adjust the master volume of like signals, such as multiple channels of drums or vocals.
Aux Returns as additional line inputs. This is especially useful for keyboards that provide their own on-board signal processing, and therefore do not need to be routed to the other Aux Sends. X2 Reference Manual Guided Tour...
Muting Automation The Master module comes complete with X2 Dynamic Mute Automation™. The display and accompanying controls let you record each individual press of a MUTE button anywhere on the console into the internal mute automation sequencer, synchronized to incoming ADAT Sync, MIDI Time Code or a MIDI Clock.
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Guided Tour This toggles the meters between Tape Sends and Tape Returns. Two Mode LEDs on the meter bridge indicate which mode is selected. X2 Reference Manual...
The power supply comes with two cables. The first is a multi-pin adapter cable which connects between the power supply unit and the back panel of the X2. Do not use any multipin cable between the power supply unit and the X2 except that provided with the unit.
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You will find the X2’s power supply connector on the left side of the rear panel. Attach the female end of the AC power cord to the power supply unit and the male end to a good quality, noise-free AC power source of the proper rating.
In some cases, a “star grounding” scheme must be used, with the X2 at the center of the star providing the shield ground on telescoping shields, which do NOT connect to the chassis ground of other equipment in the system.
Connecting the X2 Channel Inputs and Outputs Each of the 24 channel modules on the X2 contains an XLR balanced MIC Input connector, a 1/4" TRS balanced LINE Input jack, a 1/4" TRS balanced TAPE IN jack with a +4/-10 level switch, an unbalanced 1/4" TAPE SEND jack, and a TRS 1/4"...
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Connecting the X2 additional post-effect equalization is required. X2 Reference Manual...
Connecting the X2 Tape Input The Tape Input is a 1/4" balanced TRS connector which will accept either -10 dBV or +4 dBu, depending on the setting of the +4/-10 switch (see next section). The Tape Input is the normal source of the Monitor path. However, when the CHAN/MON REVERSE switch is pressed, the Tape Input is switched over to the Channel path (see section 6.0.5).
The BALANCED TAPE I/O is a 56 pin ELCO connector designed to deliver eight channels of balanced +4 dBu tape inputs and outputs, such as that on the Alesis ADAT Digital Multi Track Recorder. There are three BALANCED TAPE I/O connectors provided which, when connected to three ADATs, provide the tape sends and returns of 24 digital tape tracks.
Connecting the X2 Stereo Returns and Groups Each of the four Group modules contain two 1/4" GROUP OUT connectors (for a total of eight Group Outs), two TRS 1/4" GROUP INSERT connectors (for a total of eight Group Inserts), and four 1/4" RETURN connectors (for a total of eight Stereo Returns).
1/4" STUDIO jacks, and two pair of 1/4" jacks that serve as EXTERNAL 1 IN and EXTERNAL 2 IN. Additionally, a PHONES jack is found along the front end of the X2. Here are more detailed descriptions of each. Master Outputs The MASTER OUT consists of two balanced TRS 1/4"...
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Connecting the X2 like reverbs and digital delays. X2 Reference Manual...
The ADAT SYNC is a 9-pin, D connector which is designed to connect to an ADAT system. The X2 uses the proprietary timecode found on an ADAT formatted tape to synchronize its Dynamic Mute Automation system to tape. For more information, refer to Chapter 5.
Connecting the X2 Examples of Connections The X2 may be easily interfaced with most other professional recording and audio equipment. All inputs and outputs, with the exception of the microphone inputs, use 1/4" jacks. The microphone inputs are standard balanced XLR type jacks.
Connect the tape machine’s outputs to the TAPE IN jacks of the same-numbered channels of the X2. Whenever you want to hear the playback of the machine, track 1 will appear on the Monitor section of channel 1, track 2 will appear on the Monitor section of channel 2, and so on (see section 6.1, Monitor Controls).
Tape Send and Tape Return meter modes (to change the meter mode, see page 39). You may need to increase the X2’s fader level in order to get enough level on the multitrack’s meters. Some multitracks have high/low level input switches; follow the manufacturer’s instructions on settings these properly if you can’t get enough...
ELCO connectors, a single ADAT can be connected to channels 1 through 8 on the X2, a second ADAT to channels 9 through 16, and a third ADAT to channels 17 through 24. This connection is basically the equivalent of wiring both the TAPE SEND and TAPE IN of each channel to an ADAT track, but uses +4 dBu balanced levels, instead of -10 dBV unbalanced.
Control Room monitors. Interfacing to the Headphone Amp There are two different sets of Aux Sends on the X2. Aux 1 and 2, which are derived before the Channel FADER, are used primarily for setting up a separate cue mix for musicians to overdub to while listening to headphones.
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(like the Alesis QuadraVerb 2 or Midiverb III). Connect the Outputs of these effects devices back into the X2’s dedicated inputs, called STEREO AUX RETURNS. There are 8 pairs of Stereo Aux Returns, enough for 8 stereo, 16 mono, or any combination of mono and stereo devices.
INSERT requires a TRS plug to operate correctly. All INSERT jacks on the X2 are TRS jacks containing both an output (send) and an input (return). Refer to the wiring diagram on page 19. The tip of the plug is the Send...
In order to ensure the cleanest signal with the least amount of background noise (hiss or hum), it is extremely important that proper level settings be maintained not only within the X2 itself, but throughout the entire audio system. Therefore, it’s best to observe the following guidelines when using the X2.
If several “hot” (loud) Channels are assigned to a Group, it is possible that the Group will overload. Since the internal electronics of the X2 have 18 dB above 0 VU of headroom, it is only possible to clip the Group if: •...
Be sure the L-R buttons are in the “Off” position (up) for the Channels being recorded. Otherwise, this will cause the monitoring to be false since the signals will be heard from two sources: the Channels and the Tape Monitors. X2 Reference Manual Applications...
Be sure the L-R buttons are in the “Off” position (up) for the Channels being recorded. Otherwise, this will cause the monitoring to be false since the signals will be heard from two sources: the Channels and the Tape Monitors. X2 Reference Manual...
16 bit maximum threshold (called 0 dBfs, for full scale). Note that “0 dB” on the X2’s meters is different from “0 dB” on a digital recorder like ADAT –– it means the output of the X2 is at nominal level (either +4 dBu or -10 dBV, depending on the output jack).
Assign the channels to L-R (the switch lowest on the channel strip). Raise the Channel FADERS being used for the tape tracks you wish to listen to. Raise the L-R MASTER FADERS and CONTROL ROOM settings, as in the X2 Reference Manual...
The cue mix is created using Aux Sends 1 and 2 on the X2, because the signals from these sends are derived Pre-Fader (before the Channel or Monitor FADER). Aux 1 and 2 or the...
Returns to Outboard Effects”). There are two basic stages to getting a low-noise, distortion-free signal flow from an effects device: Adjust the send level from the X2 to the effect device using the channel Aux Sends, the Aux Master, and the input controls of the effect device itself. This level should be as strong as possible without clipping the effect device.
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To do this, you simply assign the Stereo Aux Return to the Group that you’re recording, by pressing one or more of the ASSIGN switches (for the upper “A” returns) or the GROUP MASTERS switch (for the lower “B” returns). X2 Reference Manual...
Rewind the tape, and record onto track 5 those portions you wish to bounce. Tracks 1-4 are now available for recording new parts. To bounce multiple tracks to two tracks (stereo): For each Channel (tape track) you wish to bounce, press the CHAN/MON X2 Reference Manual Applications...
RECORD mode when you want it to be. Getting the Mix to the Tape Deck Once you have established a satisfactory mix, it’s time to get it over to the mixdown tape deck. This involves connecting the L-R MASTER OUT jacks to the mixdown X2 Reference Manual...
For more information on interfacing the X2 with a mixdown deck, see page 27. Assign all Channels, Monitors, Stereo Aux Returns and Groups being used to the L- R MASTER FADERS, by making sure the L-R buttons for each is down. Then create a mix using the Faders for the selected channels.
If you don’t use ADAT, you can synchronize the X2’s sequencer to MIDI Time Code X2 Reference Manual...
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If you plan to use an external sequencer for automating mutes, there are several things to consider. Not only must you choose a MIDI channel for the X2 to receive and transmit on, you must also choose a MIDI Map which defines how the mutes will be controlled.
Also, a stereo sound system can be much more difficult to mix. To configure the X2 mixer in order to achieve a mono mix: Pan all of the Channels fully left (or fully right).
Usually, a 1/3 octave graphic equalizer is patched into the line to notch out feedback frequencies. The Alesis M-EQ 230 is a perfect unit for this application. Route the two speaker outputs of the amplifier to two different sets of stage monitors.
When you’re not recording mute events, turn off the UPDATE button to disengage recording; the sequencer will continue to play the events that were recorded as long as the ONLINE button is on and the X2 is receiving a time reference.
Alesis DataDisk, MIDI sequencer, bulk librarian, or some other MIDI device). This can be done by transmitting the data via MIDI System Exclusive messages. This data can then be retrieved to the same or another X2, instantly recalling all mute sequences from the original session.
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(snare, kick, percussion, etc.) that make up the drum section. Mute Groups can be recalled by simply pressing one of the MUTE GROUP buttons (1—4). You can easily mute all channels by pressing the ALL button. X2 Reference Manual...
• button before pressing a Mute Group button (1—4). Defining a Mute Group does not change the current mute status of the console. The X2 will resume its previous mute status when you are finished defining a Mute Group. Tip: By using more than one Song , you can create as many Mute Groups as you need ––...
To release a recalled Mute Group, press one of the MUTE GROUP buttons (1— To return the console to its previous mute status: Press all MUTE GROUP buttons that are lit. The MUTE GROUP buttons’ LEDs will turn off, and all Mute Groups will be released. X2 Reference Manual Mute Automation...
The two-digit LED display has four modes: Song, Sync, Channel, and Map. The mode is selected by pressing the DISPLAY button. Each time DISPLAY is pressed, the X2 will cycle through the four modes, as indicated by the four LEDs directly above the display.
The ONLINE button will stop flashing and remain lit to indicate it is locked. Press the UPDATE button. The UPDATE button will light (if the tape is stopped, the X2 will no longer be locked and the ONLINE and UPDATE LEDs will flash).
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Anytime you wish to add more mute events to a Song, simply select the song, put the X2 Online, play the tape and press UPDATE. New mute events will be added to the original ones. Be sure to turn UPDATE off when you’re done, to avoid recording unwanted mute events.
Song. This requires that you first locate your tape machine providing the sync source to the X2, so that the tape’s position is exactly at the location you wish to begin deleting mute events from.
Press the UPDATE button to execute the copy. Erase All Memory To erase all memory (100 Songs, including their mute events and Mute Groups): Hold the ALL/ALT button. Hold the ERASE FWD button. Press the DEC button. X2 Reference Manual...
Copying Copy Mute Events The X2 allows you to copy all mute events for a single channel within a Song to any other channel. This copy function merges copied data with whatever events were already on the destination channel. To replace a channel’s mute events you must first erase the mute events on that channel before copying (see previous section).
When you want to use an external MIDI sequencer to provide mute automation, instead of the X2’s internal sequencer, you must select a MIDI channel and choose a MIDI Map. There are several different sequencers to choose from, although we recommend using a sequencer that provides “event chasing,”...
Map to use on all occasions, based on what type of sequencer you are using. You must be offline for the MIDI maps to be active. If you are online, the X2’s internal sequencer is active.
The display will temporarily read “du” indicating that a dump has been executed. Receiving System Exclusive Receiving either a single Song or an entire memory dump into the X2 is very easy: simply transmit the data from the storage device (by whatever means possible) into the X2’s MIDI IN.
Tape Returns, and all the short Monitor FADERS will be getting signal from the Line input jacks. This would be a typical mixdown patch. By releasing the CHAN/MON REVERSE switch, the large Channel X2 Reference Manual HAPTER ONTROLS...
It can be set to as little as 1/6th of an octave when turned completely left, or to almost 2 octaves when turned completely clockwise. X2 Reference Manual...
AUX SEND 5 or AUX SEND 7, as set by the 7/8 switch below it. The AUX 6/8 knob controls how much of the Channel’s signal will be sent to either AUX SEND 6 or AUX SEND 8, as set by the 7/8 switch directly above it. X2 Reference Manual...
CHAN/MON REVERSE button is up, the Monitor FADER receives the TAPE IN signal. If the CHAN/MON REVERSE switch is down, then the input can be either the Mic or Line, as determined by the MIC/LINE switch. X2 Reference Manual...
(large fader) to any of the eight Group output busses. Each Group Assign switch is an odd-even pair, and the amount of signal sent to odd or even numbered groups is determined by the Channel PAN knob. These may be used in any combination. X2 Reference Manual...
Send’s output. When pressed, the MUTE button’s LED will light. This can be controlled via the Dynamic Mute Automation system, which gives it other functions as well (see Chapter 5). Stereo Aux Return Controls Level The Aux Return LEVEL knob controls how much signal from the stereo Aux Return X2 Reference Manual...
(see page 63). Press these switches if you want to record an effect onto the multitrack. Remember that the STEREO SEPARATION and BALANCE knobs have an effect on the assignment. GROUP MASTERS Switch (Aux B Only) X2 Reference Manual...
LED will light. The master SOLO LED will light in the Master module section, to alert you that Solo is active. You can adjust the output level of the signal(s) being soloed by turning the SOLO knob in the Master module section. X2 Reference Manual...
LEFT and ASSIGN RIGHT buttons.. They also send to the equivalent numbered Channels’ TAPE OUT jack (Group 1 to Channels 1, 9, and 17; Group 2 to Channels 2, 10, and 18; etc.). The FADER is at unity gain when all the way up. X2 Reference Manual...
Note: To record an announcement onto the mixdown tape deck, you must also assign the Group to either Left or Right (or Top Switch Down Bottom 1 kHz Switch Down 10 kHz 100 Hz X2 Reference Manual...
(Aux Send 1 and 2 output) to the Control Room. EXT 1 and EXT 2 correspond to the EXT IN 1 and EXT IN 2 input jacks on the rear of the X2. These can be used to listen to the output of a mixdown tape recorder, or CD player.
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Description of Controls and Tape Return mode. Two Mode LEDs on the meter bridge indicate which mode is selected. X2 Reference Manual...
The MAP LED indicates that the display is in MIDI Map mode. Use the INC/DEC buttons to select one of the internal MIDI maps (1.1—1.4, 2.0—2.9). This determines how the console’s MUTES will be controlled via MIDI. X2 Reference Manual Description of Controls...
Copy Mute Events Define Mute Group source Deletes the last mute recorded Decrements value in display w/ ALT Meter Bridge mode Copy Song Memory Remaining Mute Solo mode Dump System Exclusive Erase Song Software Version Clear All Memory X2 Reference Manual...
ONLINE The term “on-line” means that the Dynamic Mute Automation system is active and ready to control the X2. The type of reference is determine by the SYNC parameter (see above). Once a Sync Source has been determined and the proper connections have been made, the ONLINE button tells the X2 to synchronize its sequencer with the incoming sync source signal.
Both also require that you locate you tape machine (the one providing a sync source to the X2 Mute Automation) to the position that you wish to erase from (the ONLINE button must be turned on so the X2 can locate to the sync source’s position).
Sys Ex dump to the X2. Mute Solo The X2 provides a special Solo mode. Instead of the typical way of soloing using the SOLO buttons, this mode lets you use the MUTE buttons to solo individual channels. The main advantage is that by soloing a channel via the Mutes, you are also affecting the Master L-R outputs and Group outputs as well.
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Description of Controls X2 Reference Manual...
ROUBLE Trouble-Shooting Index If you are experience problems while operating the X2, please use the following table to locate possible causes and solutions before contacting Alesis customer service for assistance. Symptom The display does not light when the ON/OFF switch is turned on.
Refer All Servicing to Alesis We believe that the X2 is one of the most reliable mixing consoles that can be made using current technology, and should provide years of trouble-free use. However, should problems occur, DO NOT attempt to service the unit yourself.
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Tape a note to the top of the unit describing the problem, include your name and a phone number where Alesis can contact you if necessary, as well as instructions on where you want the product returned. Alesis will pay for standard one-way shipping back to you on any repair covered under the terms of this warranty.
Return 8 Sub 7 Sub 8 Aux Send 1 Aux Send 2 … Aux Send 7 Aux Send 8 Group 1 Group 2 … Group 7 Group 8 X2 Reference Manual MIDI Maps Index NDEX MIDI Note Number … … …...
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Sub 6 Return 7 Return 8 Sub 7 Sub 8 Aux Send 1 Aux Send 2 … Aux Send 7 Aux Send 8 Group 1 Group 2 … Group 7 Group 8 MIDI Controller Number … … … X2 Reference Manual...
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Each mute event is represented by a different System- Exclusive message. The only difference between these maps is how often the “snapshots” are transmitted. By choosing one of these maps, you can select how frequently the X2 sends these messages. Map Number X2 Reference Manual...
0 — 127 0 — 127 O 0 — 99 0 — 99 HART Remarks Using Map 1.1 Using Map 1.4 When SYNC is set to CL When SYNC is set to CL O : Yes X : No X2 Reference Manual...
BUSS ASSIGN ISOLATION CROSSTALK Equivalent Input Noise (22 Hz to 22 kHz): MIC w/ 150 ohm termination Input Levels: X2 Reference Manual Specifications 10 Hz – 75 kHz ± 1 dB (any input to any output @ nominal operating levels) -85 dBu...
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LINE Nominal Input Level TAPE Nominal Input Level Maximum Gain: MIC to L/R Master Out MIC to L/R Group Out MIC to Aux Sends Power Supply: X2 Maximum Power U.L. Rating Input Module (24): Phantom Power Mic/Line Selector Phase (Ø) Reverse Mic/Line Gain...
Specifications LOCK IAGRAM Note: An 11"x17" version of this drawing is included with the manual. Master Group Master Channel Module Module Module X2 Reference Manual...
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