owners manual X-Four mixing console
Ø X-Four Block Diagram 2 R L 1 L R MONITOR OUT SOURCE SELECT POST / PRE FADER SOLO AUDIO ON OFF SOLO OFF SCL+ SCL- FROM SOLO LOGIC L R 4 HP LEVEL NO R L +10 1 3 Σ Σ Σ Σ Σ Σ Σ Σ Σ 3 LO MID 4 PEAK +10 +10 block diagram X-Four owner’s manual
table of contents mono inputs stereo inputs p. 7 p. 25 group p. 41 master p. 57 power supply p.
X-Four owner’s manual
how to use this manual conventions terms indicators or controls employed on the X-Four console will appear as: TERMS tasks are broken down into steps 1 2 3 warnings Procedures not to attempt. Issues or hazards to keep in mind when operating the equipment. a indicators What to look for on-screen. Alerts, indicators, or prompts that may appear. ® tips Prefered methods. Helpful hints. Feature insights.
1 mono input module module block diagram X-Four owner’s manual panel legend p.
mono input module 1 features phantom power—+48V 48 volts DC is applied to pins 2 and 3 on the mic-input XLR connector. This option is used with condenser microphones and active direct boxes that require an external DC voltage (phantom power) in order to operate. a The 48V switch should not be engaged when using standard (dynamic) microphones, or other sources that do not use phantom power. pad The mic-input signal is attenuated by 15dB to prevent some signals (e.g.
1 mono input module module block diagram X-Four owner’s manual panel legend p.
mono input module 1 features gain The Input gain control range is closely related to the status of the PAD switch and the LINE switch. In order to establish proper gain structure in the console, input gain settings must be set correctly. LINE—switch-up PAD—switch-up 15 to 75dB of gain can be added the mic-input signal. The impedance at the input XLR is 4kΩ. LINE—switch-up PAD—switch-down -5 to 55dB of gain can be added to the mic-input signal. The impedance at the input XLR is 4kΩ.
1 mono input module module block diagram X-Four owner’s manual panel legend p.
mono input module 1 EQ features Many audio signals coming into the console require some degree of corrective eq in order to be part of a good sounding mix. The input eq consists of four-bands: high, high-mid, low-mid and low. The high and low bands have fixed frequencies while the high-mid and lowmid bands are sweepable, with their higher and lower frequencies overlapping adjacent bands. high frequency—HF 15dB boost and cut at 12kHz. The boost response is bell-shaped and the cut response is shelving.
1 mono input module module p.
mono input module 1 aux send features Six auxiliary AUX SENDS are available for creating individual output mixes. These mixes can be used for driving effects processors, providing monitor mixes, creating broadcast or alternate sound reinforcement mixes, or other special requirements. aux sends 1–6 These knobs adjust the amount of signal sent to the AUX buses. Unity gain occurs at the zero setting. AUX 6 and 8 controls pan function when selected for stereo operation.
1 mono input module module p.
mono input module 1 bus assignment features The Input bus assignment section offers considerable flexibility for creating what eventually becomes the main output mix. Such features as LCR, GROUP PAN ON and eight-individual group assignments allow several approaches to building the desired mix.All assignments are derived postfader, post-eq, and post-mute.
1 mono input module module p.
mono input module 1 bus assignment features mute The Mute switch mutes the channel as well as both pre- and postfader AUX SENDS. write-in label This label may be written on with a grease-marker, and later wiped clean with a cloth moistened with isopropyl/rubbing alcohol. Masking tape may also be placed on this surface, if desired. p.
1 mono input module module p.
mono input module 1 level meter features level meter Each input includes a five-segment LED meter for visually monitoring signal levels.This is essential for setting up and maintaining proper gain structure. LED LED LED LED LED peak indicator—PK The input signal is monitored at several points throughout the channel.These points are the mic preamp, the EQ stage and the fader stage. Overloads at any of these stages will cause the red peak-LED to light. Then the channel gain should reduced.
1 mono input module module p.
mono input module 1 bus assignment features mono assignment—M The signal is assigned to the discrete mono bus. When the LCR button is depressed, this switch is bypassed. + Always turn off and disconnect the amplifier from mains voltage before making audio connections. As an extra precaution, have the attenuators turned down during power-up. left / right assignment—L-R The Group signal is assigned to the main Left and Right output buses, deriving its signal after the channels pan system.
1 mono input module module p.
mono input module 1 rear panel features direct out 1/4" TRS jack The input channel's signal is available at this output jack.The default signal routing is derived post-fader, post-eq and post-mute.This output jack is ground-compensated. insert points Separate 1/4" TRS jacks provide the facilities for inserting an external signal processor into the signal path of the input channel. insert send This jack serves as an output for connection to the input of a signal processor.
2 stereo input module panel block diagram R NO L +10 1 3 module X-Four owner’s manual p.
stereo input module 2 features The stereo input module can be configured to operate as either stereo or mono.When configured to operate in mono, many features are identical to those of the mono input module. + To avoid redundancy, mono features will refer back to corresponding sections on the Mono module. Descriptions given here are specifically for the default Stereo configuration. line select—Line 2 This switch determines selection of input signals from the three sets of rear panel connectors.
2 stereo input module panel block diagram R NO L +10 1 3 module X-Four owner’s manual p.
stereo input module 2 features input gain—GAIN This control adjust the gain of the input preamp(s). Both left and right input signals are affected by this control. polarity reverse—ø This switch inverts the polarity of the right input signal in relation to the left input signal. see—mono input module Polarity of the right input signal is inverted. Polarity of the right input signal is not inverted.
2 stereo input module panel block diagram R NO L +10 1 3 module X-Four owner’s manual p.
stereo input module 2 four-band stereo EQ features Although left and right signals are processed separately,the parameters are set in tandem by common front-panel controls. see—mono input module high frequency—HF 15dB boost and cut at 12kHz—shelving response. high-mid frequency—HM 15dB boost and cut. Selectable frequency range of 400Hz to 8 kHz. The response is bell-shaped with a fixed Q of 1.5 low-mid frequency—LM 15dB boost and cut. Selectable frequency range of 80Hz to 2kHz.
2 stereo input module panel block diagram p.
stereo input module 2 aux send features The following descriptions apply to the stereo line input module when configured for stereo operation. see—mono input module for mono operation aux send 1–6 controls These knobs adjust the amount of signal sent the AUX buses. 1–4 are fed from a summed-mono source. AUXES 5–6 are also fed from this mono source, but can be switched to stereo operation. AUX see—stereo balance aux 1-4, 5/6 pre-fader—PRE The default signal source for the AUX SENDS is post-fader.
2 stereo input module panel block diagram p.
stereo input module 2 bus assignment features balance control The Balance control adjusts the Stereo balance for Left/Right and the Group Assignment section when in Balance mode. When the Stereo Line Input module is being used as a Mono input, the Balance control functions as a Pan control. mute see—mono input module for full description write-in label This label may be written on with a grease-marker, and later wiped clean with a cloth moistened with isopropyl/rubbing alcohol. p.
2 stereo input module panel block diagram p.
stereo input module 2 bus assignment features peak indicator—PK The input signal is monitored at several points throughout the channel.These points are the mic preamp, the EQ stage and the fader stage. Overloads at any of these stages will cause the red peak-LED to light. Then the channel gain should reduced. LED signal level LED’s These three LED's light up at +8—yellow, 0—green, and -6 dB— green. This level range -6 to +8 is the optimum operating range.
2 stereo input module panel block diagram p.
stereo input module 2 bus assignment features balance on—groups—BAL ON The left and right signals are summed as mono to make up the group assignment signals. The left and right signals are assigned in stereo to the groups in odd/even pairs. GROUP assignment switches 1 and 3 carry the left input-signal and GROUP assignment switches 2 and 4 carry the right input-signal. The proportion of left vs. right can be adjusted by the BALANCE control.
2 stereo input module panel block diagram p.
stereo input module 2 rear panel features The stereo line-input module provides connectors for three stereo linelevel signals. see—line 2 switch. F balanced left and right line-in XLR connectors These two jacks accept balanced or unbalanced +4dB line level signals.The LINE 2 switch on front-panel must be disengaged for these connectors to be active. line-input left and right 1/4" TRS jacks These two jacks accept balanced or unbalanced line level signals.
3 group module panel Σ Σ p.
group module 3 output eq features The X-Four output-section includes eight output-equalizers occupying the upper portions of the four GROUP sub-modules and the four MASTER submodules. By using designated assignment switches, output eq’s can be fed by the six AUXES or GROUPS, the two matrix masters or left, right, and mono masters. Each eq features four bands of equalization, making them ideal for feeding on-stage or in-ear monitors. high frequency—HF 15dB boost and cut at 12kHz—shelving response.
3 group module panel Σ Σ p.
group module 3 output EQ features equalizer—EQ ON Equalizer is on.This switch can be used to make A/B comparisons between "flat" and eq'd signals. This switch can be used to make A/B comparisons of "flat" and EQ'd signals. + group equalization —per output channel—EQ TO GROUP This switch selects the signal path for the eq. eq to AUX MASTERS eq to GROUPS p.
3 group module panel +10 block diagram +10 module X-Four owner’s manual p.
group module 3 matrix features The X-Four includes two MATRIX outputs. Each of these outputs can be made up of signals from the four GROUPS; the left, right and mono buses; and an external source. matrix 1–2 levels—M1, M2 These level controls are used to mix the group's signal into the corresponding matrix. post-group The GROUP fader setting has no effect on the group-to-matrix level controls 1–2. The GROUP fader is introduced into the signal path.
3 group module panel +10 block diagram +10 module X-Four owner’s manual p.
group module 3 fader reverse The AUX / GRP feature is used to swap the functions of the AUX MASTER controls and the GROUP MASTER controls and the AUX MASTER and LEFT/RIGHT MAIN controls. Swapped controls include: the TALK TO switch, the SOLO switch, the MUTE switch, and the MASTER LEVEL control (via rotary control on the AUX MASTER and a fader on the GROUP MASTER).
3 group module panel +10 block diagram +10 module X-Four owner’s manual p.
group module 3 group assignment features + mono assignment—from group—MONO The GROUP signal is assigned to the discrete mono bus. left/right assignment—from group—L/R The GROUP signal is assigned to the main left and right output buses. This is a useful feature when the mixer is being used to feed on-stage or in-ear monitors. A red LED visually indicates when this feature has been selected. There is one switch for each of the six AUX MASTERS / GROUP MASTERS.
3 group module panel Σ Σ p.
group module 3 group/aux level features signal/peak LED’s This dual color LED responds to the pre-fader signal. It illuminates green with varying brightness in proportion to the audio signal.When the signal approaches clipping, the LED illuminates red. LED talk to—fader 1–4 This switch adds the TALKBACK system output to the fader signal.The level of the TALKBACK signal is set by the TALKBACK level control in the MASTER section.
3 group module panel Σ Σ p.
group module 3 rear panel features group output M This balanced male XLR connector carries the GROUP output signal. see—group fader, front-panel description group insert point Separate 1/4" TRS jacks provide the ability to insert an external signal processor into the signal path of the GROUP. group insert send This output connects to the input of an external signal processor. The signal is derived after the group-summing amplifier.
3 group module panel Σ Σ +10 block diagram +10 module X-Four owner’s manual lamp dim switch and DC IN connector p.
group module 3 rear panel features auxiliary 1–6 output XLR’s M This balanced male XLR connector carries the AUX output signal. These outputs are controlled by their respective AUX output level controls. see—aux section, front panel description aux insert point Separate 1/4" TRS jacks provide the ability to insert an external signal processor into the signal path of the AUX. aux insert send This output connects to the input of an external signal processor.
5 master module block diagram Σ Σ Σ Σ Σ Σ Σ LO MID PEAK module X-Four owner’s manual panel p.
master module 5 output EQ features On the MASTER module block, the default sources for the four output eq’s are the AUX 5 and 6, and MATRIX 1 and 2. By using designated assignment switches, source for the first three output eq’s can be switched over to the left, right and mono masters.The fourth eq is always fed by MATRIX 2 master. All eq's feature four bands of equalization. see—group module high frequency—HF boost / cut -15 dB boost and cut at 12kHz—shelving response.
5 master module block diagram Σ Σ Σ Σ Σ Σ Σ LO MID PEAK module X-Four owner’s manual panel p.
master module 5 output EQ features equalizer—EQ ON Equalizer is on. This switch can be used to make A/B comparisons between flat and eq’d signals. left, right, mono equalization—EQ TO LEFT, TO RIGHT, TO MONO These three switches select the signals fed to each of the first three eq’s on the first three master sub-modules.The fourth MASTER sub-module does not include a switch because its source is always MATRIX 2. AUX 5 and 6 are fed to the MATRIX 1 is fed to the third eq. first two eq’s.
5 master module block diagram panel p.
master module 5 matrix features The X-Four includes two MATRIX mixes.Each of these outputs can be made up of signals from the four GROUPS,left,right,mono and an external source. left, right, and mono levels—MATRIX 1–2 These level controls are used to mix the left, right, and mono signals into the corresponding MATRIX. post-fader—left, right, and mono These three post-fader switches determine whether the left, right and mono MASTER faders have any effect on signals that available to MATRIX 1–2.
5 master module block diagram panel p.
master module 5 matrix output features master output levels—MTX 1–2 These are the MASTER output level controls for the MATRIX section. They control the levels that appear at the corresponding MATRIX output connectors on the rear-panel. matrix 1–2 talkback—TALK TO This switch adds the TALKBACK system output to the MATRIX outputs. The level of the TALKBACK signal is set by the TALKBACK level control in the MASTER section.
5 master module block diagram Σ Σ Σ Σ Σ Σ Σ LO MID PEAK module X-Four owner’s manual panel p.
master module 5 alternate out features The ALTERNATE output section allows assignment of the left and right MASTER signals (plus center—if LCR-TO-OUTPUTS is selected) to a separate pair of balanced male XLR connectors on the rear-panel. By utilizing the mode switches located below the ALT OUT level control,these signals can be derived in a number of ways.
5 master module block diagram panel p.
master module 5 monitor output features The MONITOR output section controls the audio feed for the console operator. Features are similar to those of ALT OUT section,except that the MONITOR section is normally used to access the SOLO system as well as main outputs. Like the alternate output section, it provides the ability to assign the left and right MASTER signals to a designated pair of balanced male XLR connectors on the rear-panel.
5 master module block diagram L R module X-Four owner’s manual X-Four Block Diagram L R OFF panel p.
master module 5 left master features signal/peak LED—SIG/PEAK This dual-color LED responds to the left pre-fader signal. It illuminates green with varying brightness in proportion to the audio signal.When the signal approaches clipping,either pre- or post-fader,the LED illuminates red. LED talkback left/right—TALK TO The TALKBACK system output is added to the left and right MASTER outputs.The level of the TALKBACK signal is set by the TALKBACK level control in the MASTER section.
5 master module block diagram L R module X-Four owner’s manual X-Four Block Diagram L R OFF panel p.
master module 5 right master features signal/peak LED—SIG/PEAK This dual-color LED responds to the right pre-fader stereo signal. It illuminates green with varying brightness in proportion to the audio signal. When the signal approaches clipping, either pre- or post-fader, the LED illuminates red. LED right—TALK TO The TALKBACK system output is added to the left and right MASTER outputs.The level of the TALKBACK signal is set by the TALKBACK level control in the MASTER section.
5 master module block diagram OFF L R module X-Four owner’s manual X-Four Block Diagram L R panel p.
master module 5 mono master features signal/peak LED—SIG/PEAK This dual-color LED responds to the pre-fader mono signal. It illuminates green with varying brightness in proportion to the audio signal. When the signal approaches clipping, either pre- or post-fader, the LED illuminates red. LED talkback mono—TALK TO MONO The TALKBACK system output is added to the mono MASTER output. The level of the TALKBACK signal is set by the TALKBACK level control in the MASTER section.
5 master module block diagram OFF L R module X-Four owner’s manual X-Four Block Diagram L R panel p.
master module 5 talkback features The TALKBACK system provides facilities for assigning an external signal (usually the console operator's microphone) to any of the console's outputs.Other signals can be routed through the TALKBACK system include the tone oscillator or the built in PINK NOISE generator. talkback level This control sets the level that appears at any of the outputs with their respective TALK TO switches engaged.
5 master module block diagram panel p.
master module 5 rear panel features left and right alternate output XLR’s M This pair of balanced male XLR connectors carries the left and right signals.These outputs are controlled by the ALT OUT level control. ALT OUT see—left and right alternate output, front-panel description left and right monitor output jacks This pair of ground compensated 1/4" TRS jacks carries the left and right MONITOR signals.These outputs are controlled by the MONITOR level control.
5 master module block diagram panel p.
master module 5 rear panel features insert points—left, right, and mono Separate 1/4" TRS jacks provide the ability to insert external signal processor into the signal paths of the left, right and mono MASTERS. insert sends—left, right, and mono These jacks connect to the input of signal processors.The signals are derived after the left, right and mono summing amplifiers. insert returns—left, right, and mono These jacks connect to the outputs of a signal processors.
8 power supply X-Four owner’s manual model 5A power supply master rear-panel specifications output power +18V @ 5A DC -18V @ 5A DC +12V @ 4A DC +48V @ 0.75A DC DC out recepticle two Hirose JR16RK-7S connectors on rear connector meets JIS C 5432 standard DC out cable grey polyurethane outer jacket, 15 feet long seven-way, 14-gauge stranded conductors rated 600 volts, 80 degrees C UL and CSA approved Hirose JR16PK-7S and JR16PK-7P connectors fitted AC mains power supply 90 to 250 volts @ 4.
power supply 8 power supply usage supply identification The type of power supply can be identified by the model number shown on the back of the chassis and panel label. power requirements The X-Four power supplies have certain electrical requirements for proper operation. If possible the power supply should be connected to a dedicated circuit. Should any other appliance on the same circuit draw enough current to overload the circuit, the breaker or fuse will trip causing loss of power to the console.
8 power supply model 5A power supply specifications output power +18V @ 5A DC -18V @ 5A DC +12V @ 4A DC +48V @ 0.75A DC DC out recepticle two Hirose JR16RK-7S connectors on rear connector meets JIS C 5432 standard DC out cable grey polyurethane outer jacket, 15 feet long seven-way, 14-gauge stranded conductors rated 600 volts, 80 degrees C UL and CSA approved Hirose JR16PK-7S and JR16PK-7P connectors fitted AC mains power supply 90 to 250 volts @ 4.5 amps maximum universal AC input voltage.
power supply 8 power supply usage console and power supply grounding Console chassis ground is electrically connected to: the audio ground, pin1 of XLR connectors, the sleeves of 1/4” sockets,and to the terminal CONSOLE GROUND at the rear of the power supply. The AC third-wire connection in the power supply cable connects the metal chassis of the power supply to safety ground.
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