Page 2 - X-Four owner’s manual; block diagram
X-Four owner’s manual block diagram Σ OFF Ø R L 1 3 SOLO OFF SOLO A UDIO ON MONIT OR OUT SOURCE SELECT POST / PRE F ADER LR LR FR OM SOLO LOGIC SCL+ HP LEVEL X-Four Block Diagram SCL- +10 +10 PEAK LO MID Σ Σ Σ Σ Σ Σ Σ Σ NO +10 L R 2 4 4 1 3
Page 3 - table of contents
1 2 3 4 5 group p. 41 master p. 57 power supply p. 81 stereo inputs p. 25 mono inputs p. 7 table of contents
Page 5 - how to use this manual; conventions; see—references other sections of the manual containing
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 indicators tips see see—references other sections of the manual containing supplementary information on the current topic or a related ...
Page 6 - mono input module; module
p. 6 X-Four owner’s manual mono input module module panel legend block diagram 1
Page 7 - features; phantom power; 8 volts DC is applied to pins 2 and 3 on the mic-input XLR con-; pad; The mic-input signal is attenuated by 15dB to prevent some signals; line; The input preamp circuit is set up to accept a mic-level signal. This; polarity reverse; polarity inverted
p. 7 mono input module features phantom power —+48 V 48 volts DC is applied to pins 2 and 3 on the mic-input XLR con- nector. This option is used with condenser microphones and active directboxes that require an external DC voltage (phantom power) in order tooperate. pad The mic-input signal is atte...
Page 9 - gain; switch and the; switch. In order to establish proper gain structure in; —HPF; HPF; on
p. 9 mono input module 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 ad...
Page 11 - EQ; high frequency; —HF; low frequency; —LF; eq on
p. 11 mono input module EQ features Many audio signals coming into the console require some degree of cor-rective 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 l...
Page 13 - aux; send features; —PRE; see—; internal jumper options
p. 13 mono input module aux send features Six auxiliary AUX SENDS are available for creating individual output mixes. These mixes can be used for driving effects processors, providing monitormixes, creating broadcast or alternate sound reinforcement mixes, orother special requirements. aux sends 1–6...
Page 15 - bus assignment features; —LCR; pan control; mute
p. 15 mono input module bus assignment features The Input bus assignment section offers considerable flexibility for creat-ing 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....
Page 17 - The Mute switch mutes the channel as well as both pre- and post-
p. 17 mono input module bus assignment features mute The Mute switch mutes the channel as well as both pre- and post- fader AUX SENDS . write-in label This label may be written on with a grease-marker, and later wiped cleanwith a cloth moistened with isopropyl/rubbing alcohol. Masking tape mayalso b...
Page 19 - level meter features; level meter; peak indicator; —PK; LED; signal level; LED; LED; —green; signal present indicator; —SIG
p. 19 mono input module 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 main-taining proper gain structure. peak indicator —PK The input signal is monitored at several points throughout the chan-...
Page 21 - mono assignment; —groups—; odd–left; group 1–4 assignment; pan on; —groups; input fader; master module
p. 21 mono input module 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. left / right assignment —L-R The Group signal is assigned to the main Left and Right output buses, deriving its signal after ...
Page 23 - rear panel features; —Bal Line In; —Bal Mic In
p. 23 mono input module 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.Thisoutput jack is ground-compensated. insert points Separate 1/4" TRS jacks provide the fa...
Page 24 - stereo input module
p. 24 X-Four owner’s manual stereo input module module panel legend block diagram Ø R L 1 3 +10 L R NO 2
Page 25 - line select; —Line 2; XLR; RCA; left and right mono-switches
p. 25 stereo input module features The stereo input module can be configured to operate as either stereo ormono. When configured to operate in mono, many features are identicalto those of the mono input module. line select —Line 2 This switch determines selection of input signals from the three sets...
Page 27 - input gain; Both left and right input signals are affected by this control.; Polarity of the right input signal is inverted.
p. 27 stereo input module 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 theleft input signal. see— mono inpu...
Page 29 - 5dB boost and cut at 12kHz—shelving response.; —HM; 5dB boost and cut at 80Hz.; equalizer; —EQ ON; Equalizer is; . This switch can be used to make A/B comparisons
p. 29 stereo input module four-band stereo EQ features Although left and right signals are processed separately, the parameters areset 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 ...
Page 31 - for mono operation; aux send 1– 6 controls; stereo balance; stereo balance 5 and 6
p. 31 stereo input module aux send features The following descriptions apply to the stereo line input module whenconfigured 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. AUX 1–4 are fed from a summed...
Page 33 - balance control; Group Assignment section when in Balance mode.; for full description
p. 33 stereo input module 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, theBalance control functions as a Pan control. mute ...
Page 35 - Then the channel gain should reduced.; These three; signals are summed to make up the mono or center signal.; left/right assignment; The proportion of left vs. right can be adjusted by the
p. 35 stereo input module bus assignment features peak indicator —PK The input signal is monitored at several points throughout the chan- nel. 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 ga...
Page 37 - right; balance on
p. 37 stereo input module 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 inpu...
Page 39 - line 2; switch on front-panel must be disengaged for these connectors to; switch on front panel must be engaged for these jacks to be active.; switch on front-panel is engaged and nothing is plugged into the
p. 39 stereo input module rear panel features The stereo line-input module provides connectors for three stereo line-level signals. see— line 2 switch. 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-pane...
Page 40 - group module
p. 40 X-Four owner’s manual group module module panel block diagram Σ +10 +10 Σ 3
Page 41 - output; eq; matrix masters; mid frequency; —MID
p. 41 group module output eq features The X-Four output-section includes eight output-equalizers occupying theupper portions of the four GROUP sub-modules and the four MASTER sub- modules. By using designated assignment switches, output eq’s can be fed by the six AUXES or GROUPS , the two matrix mas...
Page 43 - group equalization; —per output channel—; This switch selects the signal path for the eq.; eq to
p. 43 group module 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. group equalization —per output channel— EQ TO GROUP This switch selects the signal path for the eq. eq to AUX MASTERS eq to GROUPS This sw...
Page 45 - matrix features; matrix 1– 2 levels; matrix
p. 45 group module 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 cor- r...
Page 47 - fader reverse; off; aux 1–6 output level
p. 47 group module fader reverse The AUX / GRP feature is used to swap the functions of the AUX MASTER con- trols 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 cont...
Page 49 - group assignment features; —from group—; pan
p. 49 group module 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. pan The PAN pot is used to position the group signal with...
Page 51 - group; talk to
p. 51 group module 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 thesignal approaches clipping, the LED illuminates red. talk to —fader 1–4 This switch adds the T...
Page 53 - group output; group fader; group insert point; group insert send
p. 53 group module rear panel features group output 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...
Page 54 - DC IN; connector
p. 54 X-Four owner’s manual group module module panel lamp dim switch and DC IN connector block diagram Σ +10 +10 Σ 3
Page 55 - auxiliary 1– 6 output XLR’s; section, front panel description; aux insert point; aux insert send; lamp dim
p. 55 group module rear panel features auxiliary 1– 6 output XLR’s 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 provid...
Page 59 - EQ ON
p. 59 master module 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 ...
Page 61 - external input levels—
p. 61 master module 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 ...
Page 62 - panel
p. 62 X-Four owner’s manual master module module 5 block diagram PEAK LO MID Σ Σ Σ Σ Σ Σ Σ panel
Page 63 - matrix output features; master output levels; TALK TO
p. 63 master module 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...
Page 65 - alternate out features; alternate out level; sum mono; pre switch
p. 65 master module 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 bal- anced male XLR connectors on the rear-panel. By utilizing the mode switches located below the ALT ...
Page 67 - monitor output features; alternate out; headphone level
p. 67 master module monitor output features The MONITOR output section controls the audio feed for the console oper- ator. Features are similar to those of ALT OUT section, except that the MON - ITOR section is normally used to access the SOLO system as well as main outputs. Like the alternate outpu...
Page 69 - left master features; main; left master fader
p. 69 master module 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 thesignal approaches clipping, either pre- or post-fader, the LED illuminates red. talkbac...
Page 71 - right master features; phantom; right master fader
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. right —TALK TO Th...
Page 73 - mono master features; talkback mono; —TALK TO MONO; main left/ main right; L–R TO MONO; mono master fader; solo on indicator
p. 73 master module mono master features signal/peak LED —SIG/PEAK This dual-color LED responds to the pre-fader mono signal. It illumi- nates green with varying brightness in proportion to the audio signal.When the signal approaches clipping, either pre- or post-fader, the LED illuminates red. talk...
Page 75 - talkback features; talkback level; pink noise; —TALK ON
p. 75 master module talkback features The TALKBACK system provides facilities for assigning an external signal (usually the console operator's microphone) to any of the console's out-puts. Other signals can be routed through the TALKBACK system include the tone oscillator or the built in PINK NOISE ...
Page 77 - left and right alternate output; left and right monitor output; jacks; monitor; matrix 1– 2 output; left, right and mono output
p. 77 master module rear panel features left and right alternate output XLR ’s This pair of balanced male XLR connectors carries the left and right ALT OUT signals.These outputs are controlled by the ALT OUT level control. see— left and right alternate output , front-panel description left and right...
Page 79 - insert points; insert sends; DC
p. 79 master module rear panel features insert points —left, right, and mono Separate 1/4" TRS jacks provide the ability to insert external signal proces- sor into the signal paths of the left, right and mono MASTERS . insert sends —left, right, and mono These jacks connect to the input of signa...
Page 80 - power supply; model 5A power supply
p. 80 X-Four owner’s manual power supply master rear-panel model 5A power supply specifications +18 V @ 5 A DC -18 V @ 5 A DC +12 V @ 4 A DC +48 V @ 0.75 A DC t wo H irose JR16RK-7S connectors on rear connector meets JIS C 5432 standard g rey p olyurethane outer jacket, 15 feet long seven-way, 14-ga...
Page 81 - power supply usage; supply identification; —each new power supply is shipped with the AC; twin-supply operation; both
p. 81 power supply power supply usage supply identification The type of power supply can be identified by the model number shownon the back of the chassis and panel label. power requirements The X-Four power supplies have certain electrical requirements for properoperation. If possible the power sup...
Page 83 - console and power supply grounding; connectors, the sleeves of; at the rear of the power supply.; redundant power supplies
p. 83 power supply power supply usage console and power supply grounding Console chassis ground is electrically connected to: the audio ground, pin-1 of XLR connectors, the sleeves of 1/4” sockets, and to the terminal CON - SOLE GROUND at the rear of the power supply. The AC third-wire connection in...