Midas_XL42_Manual电路图.pdf

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1、OPERATORS MANUAL XL42 Telex Communications (UK) Ltd. Klark Teknik Building Walter Nash Road Kidderminster Worcestershire DY11 7HJ England Tel: +44 1562 741515 Fax: +44 1562 745371 Website: XL42 Dual Channel Strip Operators Manual DOC02-XL42 Issue B - December 2005 Telex Communications (UK) Ltd. In l

2、ine with the companys policy of continual improvement, specifications and function may be subject to change without notice. E thus creating a custom 10 into 2 mixer via the output daisy chain feature. The resulting L and R outputs may then be routed to the master console via any convenient point, su

3、ch as, a pair of aux returns, group inputs, matrix inputs etc. As a stand-alone unit, the XL42 is ideally suited to applications requiring a high quality front end, such as stereo recording etc. IntroductionIntroduction XL42 Operators Manual - Page 1 Installation Precautions Voltage Selection and Po

4、wer Connection Safety Warning Attention! Cables Electric Fields Mains power to the XL42 is supplied by means of a standard fused IEC power socket. The XL42 is designed to operate at nominal mains voltages of 115V and 230V AC at either 50 or 60 Hz, however, upon first use (and whenever the mains supp

5、ly is changed) the input voltage selector on the rear of the unit must be set to reflect the local power supply. This information is also printed on the rear of the unit, below the mains inlet socket. This device must be earthed and must use an approved mains fuse. Before connecting to the mains sup

6、ply, ensure the fuse fitted is the correct type and rating as indicated on the rear panel (adjacent to fuse holder) and that the correct mains supply voltage is selected. To completely disconnect this equipment from the AC mains, set the power switch to the off position. The power switch shall remai

7、n readily operable. Do not expose this equipment to dripping or splashing and ensure that no objects filled with liquids, such as vases, are placed on the equipment. For safety reasons the earth lead for this unit should never be disconnected. In the event of ground loop problems, under no circumsta

8、nces must the mains earth be removed. Instead, disconnect the signal screen at one end of the connecting cables. Please note that this can only be done when the unit is being used within a balanced system. To prevent shock or fire hazard, do not expose the unit to rain or moisture. To avoid electric

9、al shock do not remove covers. Refer servicing to qualified personnel only. The inputs and outputs are balanced on conventionally wired XLRs (pin 1 screen, pin 2 hot and pin 3 cold). This product should only be used with high quality, screened twisted pair audio cables, terminated with metal-bodied

10、3-pin XLR connectors. Any other cable type or configuration for the audio signals may result in degraded performance due to electromagnetic interference. The +48V phantom power can only be used with balanced cables. Should this product be used in an electromagnetic field that is amplitude modulated

11、by an audio frequency signal (20Hz to 20kHz), the signal to noise ratio may be degraded. Degradation of up to 60dB at a frequency corresponding to the modulation signal may be experienced under extreme conditions (3V/m, 90% modulation). No permanent damage or degradation of performance will be cause

12、d by these conditions. Note: Do not install this unit in a location subjected to excessive heat, dust or mechanical vibration. Allow for adequate ventilation around the unit, making sure the units vents are not obstructed. To avoid excessive heating of the unit, avoid mounting the unit directly abov

13、e power amplifiers or other devices that radiate significant amounts of heat. Where necessary, use fan-cooled racks. Before You StartBefore You Start XL42 Operators Manual - Page 2 Before unpacking the XL42, check packaging for signs of damage, as this could be an indication of damage to the unit in

14、side. After unpacking the XL42, check the unit for signs of damage to the casing. Damage to consignments must usually be reported to the courier within 24 hours in order for a claim to be made. Please retain the packaging for your XL42, as it will prove useful if you need to transport the unit. Plea

15、se also retain the XL42s Operators Manual (this document) and any other associated documentation. After You Have Unpacked the UnitAfter You Have Unpacked the Unit XL42 Operators Manual - Page 3 After You Have Unpacked the UnitAfter You Have Unpacked the Unit XL42 Operators Manual - Page 4 EQ section

16、 Output section Power On/Off switch: Conventional latching type switch, which is on when in its fully in position and off when fully out. The action of the switch is firm but does not require excessive force, which may damage the unit. A red LED, to the left of the power switch, illuminates to indic

17、ate that the XL42 is receiving mains power. Input section The XL42 is a highly featured 1U 19” rackmount, dual channel strip. The unit is split into two identical channel strips, each with identical functionality but having independent inputs and outputs. Front PanelFront Panel XL42 Operators Manual

18、 - Page 5 Input section mic/line gain control knob: Gives a continuously variable input gain control depending upon the input selected, where: Mic: +15dB to +70dB gain Mic (PAD enabled): -10dB to +45dB PAD switch:line/padTheswitch provides 25dB of attenuation to the input signal and allows the conne

19、ction of high output microphones or line level signals. If using the XL42s optional transformer- coupled input, the pad greatly reduces the risk of saturation at very low frequencies. +48 switch: Phantom power +48V switch allows connection of devices that require phantom power, such as, condenser mi

20、crophones, direct inject (DI) boxes etc. switch: Phase switch inverts the input signal by applying a 180 phase shift. Front PanelFront Panel XL42 Operators Manual - Page 6 The bass, lo-mid, hi-mid and treble bands use dual concentric rotary controls. The outside ring controls the band cut and boost

21、in the range -15dB to +15dB. The inner ring of the dial controls the bandwidth of the filter in the range 0.1 to 2 octaves (with a centre detent at 0.5 octave). EQ section freq (bass) control: Selects frequency at which the bass equaliser band acts; continuously variable from 20Hz to 400Hz. bass dua

22、l concentric rotary control knob: bell Bass band gain/attenuation adjustment is via inner control knob. Bass bandwidth is adjusted using the outer control ring, enabled viaswitch (immediately below). bell (bass) switch: Conventional latching switch enables/disables parametric EQ for the bass band. W

23、hen switch is in fully in position, equaliser band will work in full parametric mode. Otherwise, equaliser band acts like a traditional MIDAS shelving response EQ. freq (hi-mid) control: Selects frequency at which the hi-mid equaliser band acts; continuously variable from 400Hz to 8kHz. eq switch: E

24、nables/disables equaliser in the signal path. freq (lo-mid) control knob: Lo-mid control selects frequency at which the lo-mid equaliser band acts and is continuously variable from 100Hz to 2KHz. lo-mid dual concentric rotary control knob: Lo-mid band gain/attenuation adjustment is via inner control

25、 knob. Lo-mid bandwidth is adjusted using outer control ring. hi-mid dual concentric rotary control knob: Hi-mid band gain/attenuation adjustment is via inner control knob. Hi-mid bandwidth is adjusted using outer control ring. treble dual concentric rotary control knob: bell Treble band gain/attenu

26、ation adjustment is via inner control knob. Treble bandwidth is adjusted using outer control ring, activated by switch (immediately below). bell (treble) switch: Conventional latching switch enables/disables parametric EQ for the treble band. When switch is in fully in position, equaliser band will

27、work in full parametric mode. Otherwise equaliser band acts like a traditional MIDAS shelving response EQ. freq (lo-cut) control knob: lo-cut Lo-cut filter control selects the HPF frequency and is continuously variable from 20Hz to 400Hz. Enabled by theswitch. lo-cut switch: Conventional latching sw

28、itch that enables lo-cut filter when switch is on, that is, in its fully in position. freq (treble) control: Selects frequency at which the treble equaliser band acts; continuously variable from 1KHz to 20KHz. Front PanelFront Panel XL42 Operators Manual - Page 7 Output section level/pan dual concen

29、tric rotary control knob: PANPAN PAN Adjusts pan or output level. Pan control places the input within a stereo (left/right) mix and has a constant power law such that, at its centre position, each output is attenuated by 3dB. Pan control is enabled by theswitch (immediately below) and is adjusted us

30、ing the outer control ring. With switch off, the XL42 is essentially two independent channel strips. Withswitch on, the output signal from each input strip is distributed between the two outputs. The output level, adjust by the inner control knob, controls the output level in the range - (infinity)

31、to +10dB. ? INS switch: Note: Selects whether the insert circuitry is patched into the audio signal path. When the switch enabled (on, fully in position) then the insert jacks are patched into the audio signal path. the insert point can be configured internally using jumpers to be pre- or post- EQ.

32、The factory default setting is Pre-EQ. MUTE switch: Mutes the channel outputs. Mute may also be controlled via the Automute link selected via the REMOTE CONTROL AUTOMUTE ASSIGNS DIP switches on the rear panel Output peak level meter: Monitors the level of the channel. By default, this is post-output

33、 level and pan, although it may be internally set to be pre-level pan and insert. PAN switch: level/pan Enables the pan control on the dual concentric rotary control knob. Front PanelFront Panel XL42 Operators Manual - Page 8 Left and right inputs Left and right link inputs Left and right outputs Le

34、ft and right insertion points Left and right remote control Automute assigns Automute input and link Supply voltage selector switch IEC Power Inlet. Your XL42 should come complete with the correct IEC mains lead for the country in which it was intended for sale. If replacing the mains lead, replace

35、with a recommended part and ensure that the fuse is of the correct type. The XL42 must be earthed. The XL42 rear panel houses both the input and output sockets as well as the insert points, remote control and Automute sockets, and power inlet and selector. TO REDUCE THE RISK OF FIRE, REPLACE FUSE WI

36、TH THE SAME TYPE AND RATING FUSE5X20mm 115V T315mAL250V 230V T160mAL250V 115 / 230V 50-60Hz 40W REMPLACER PAR UN FUSIBLE DE MEME TYPE ATTENTION RISQUE DE CHOC NE PAS ENLEVER WARNING DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOiSTURE CAUTION THIS EQUIPMENT MUST BE EARTHED SUPPLY VOLTAGE LEFT INPUTRIGHT

37、 INPUTLEFT LINK INPUTRIGHT LINK INPUTLEFT OUTPUTRIGHT OUTPUTRETURNRETURNSENDSEND RIGHT 1995 RIGHT LEFT LEFT INSERTION POINTS AUTOMUTE ASSIGNS REMOTE CONTROL AUTOMUTE INPUT AUTOMUTE LINK PUSHPUSHPUSHPUSH 230 NRTL/C Rear PanelRear Panel XL42 Operators Manual - Page 9 LEFT INPUTRIGHT INPUTLEFT LINK INP

38、UTRIGHT LINK INPUTLEFT OUTPUTRIGHT OUTPUT PUSHPUSHPUSHPUSH Left and right link inputs: When used in a daisy chain, the link input is summed with the output from the XL42s input channels to the output so that the daisy chain may continue. A much larger console can be created by adding extra XL42s usi

39、ng the output from the last XL42 in the chain as the master output. Input impedances:20kOhm Balanced Maximum input level:+21dBu The Left and Right link inputs may be configured using internal jumpers to sum with the channel input Pre- or Post- Output Level, Pan and Mute. The factory default setting

40、is post Output Level, Pan and Mute. Left / Right Output: Balanced XLR output from the channel strip. The output signal will be a combination of the link input plus the output from the XL42s input channels. If pan is selected on either of the inputs, the outputs will be a stereo combination of the in

41、put channels plus the link input. If pan is disabled on the channels, the output will be a combination of the input channel and the link input only. Please note that if one input channel has pan enabled and one does not, the channel with pan enabled obeys the pan law of the pan pot. However, no sign

42、al is introduced into the other output. Only when both channel pan switches are enabled does the unit enter full stereo mode, that is, either output can be a combination of either input. Maximum output level:+21dBu The Left and Right Outputs may be internally configured using jumpers to be pin 2 or

43、pin 3 hot. Factory default setting is pin 2 hot. XL42 Operators Manual - Page 10 Rear PanelRear Panel Left and right inputs: Balanced XLR input to the channel strip from microphones, DI boxes, line etc. Input impedances:Mic:2kOhm Balanced Mic (with PAD):3kOhm Balanced Maximum input level:Mic:+6dBu M

44、ic (with PAD):+31dBu Automute link/Automute input: Automute link socket can be used to extend the Automute connection to other XL42s in the daisy chain. Automute input should be wired according to diagram below. Left and right insertion points: Insert points can be used to add additional processing

45、into the signal path, for example, Dynamics Processors, Graphic EQ, Effects, etc. Input impedance:20kOhm Balanced Maximum input level:+21dBu The insert send and return are on independent balanced Bantam Jacks. The insert point can be configured internally using jumpers to be pre- or post- EQ. The fa

46、ctory default setting is Pre-EQ. Remote Control Automute Assigns: The 9-pin plug for the Automute system allows up to 8 Automute channels. The input channels of the XL42 can be set to mute on one of these 8 Automute channels by switching on the corresponding channel number on the DIP switch for the

47、XL42s input channels. Supply voltage selector switch: Caution! The supply voltage selector switch must be set BEFORE plugging the unit into the mains. UNDER NO CIRCUMSTANCES should the switch be changed whilst the unit is plugged in. The supply voltage is switchable between 115VAC and 230VAC, and sh

48、ould be set to the mains power supply available in the country in which the unit is to be used. WARNING DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOiSTURE SUPPLY VOLTAGE RETURNRETURNSENDSEND RIGHT 1995 RIGHT LEFT LEFT INSERTION POINTS AUTOMUTE ASSIGNS REMOTE CONTROL AUTOMUTE INPUT AUTOMUTE LINK 230 NR

49、TL/C 1 2 3 4 5 5 4 3 2 1 6 7 8 9 9 8 7 6 Pin 1 Automute 1 Pin 2 Automute 2 Pin 3 Automute 3 Pin 4 Automute 4 Pin 5 Automute 5 Pin 6 Automute 6 Pin 7 Automute 7 Pin 8 Automute 8 Pin 9 Common 115 / 230V 50-60Hz 40W XL42 Operators Manual - Page 11 Rear PanelRear Panel XL42 Operators Manual - Page 12 Rear PanelRear Panel The XL42 is a versatile expansion to any system, or a complete system on its own. You can use it: As a Plug the microphone or DI box into the XL42 and the output into the line input of your console. You can also use the XL42 EQ and bypass your consoles EQ. Set PAN t