Midas xl4-b-op-man电路图.pdf

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1、Contents Introduction Features Overview and Statistics Technical Specification Block Diagrams Rear Panel Midas XL402 Input Pod Midas XL401 Input Module Midas XL405 Stereo Input Pod Midas XL404 Stereo Input Module Midas XL403 Input VCA Fader Midas XL414 Group Module Midas XL412 Group Pod Midas XL413

2、Grand Master A VCA Fader Midas XL421 Master Module Midas XL422 Master Pod Midas XL431 Communications Module Midas XL441 Matrix Module Midas XL443 Automation Central Control MIDAS XL4 BROADCAST CONSOLE 1 3 13 21 25 7 9 15 19 29 33 38 41 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 XL4 Introduction

3、 The XL4 is the pinnacle in the current range of Midas consoles. Designed around the classic high quality associated with analogue circuitry which was proven with the XL3 Live Performance and Theatre console. The requirements associated with the broadcast environment was designed into the original X

4、L4 specification. These include, moving faders on all 48 Inputs and 12 VCAs including remote machine starts, instant access to AFL/PFL, Snapshot automation to include audio follow video, direct outputs on each input, 16 Mic/Line level returns with VCA routing for total control over effects and ambie

5、nt microphones as well as full communications module. Acknowledgments Thank you to: Gottfried Duren-Fisgus Christian Gobbel from Sono Studiotechnik Jean Pascal Lefort from Visual Technology Phillipe Monteau RadioFans.CN 收音机爱 好者资料库 Masters & Comms Modules 20 x 8 Matrix 24 Input Channels Automation pa

6、ckage capable of memorising:audio, VCA, mute group routing,status of all input channel switches, plus: midi, smpte, RS-232 ports 2 Grand Masters 16 mic/line level returns 10 VCA sub groups on moving faders 24 Input channels each with direct output, 4band parametric e/q, 16 mono aux (post panpot) 8 s

7、tereo groups and stereo masters 16 Audio Sub Groups Aux Send MastersInput Pots Midas XL4 Features 48 Mic Inputs. Direct Outputs. 16 audio sub groups. Line inputs. Equaliser. Inserts. Input metering. Audio busses. VCA and mute busses. The XL4 features a new mic amplifier which further improves on the

8、 XL3 design giving increased gain range and lower distortion whilst retaining the XL3s constant HF bandwidth topology which assures excellent amplifiers stability, RF rejection and noise performance at all gains. Every input module is fitted with a direct output as standard with its own level contro

9、l and front panel switching which selects the source from post fader, pre fader or pre insert and equaliser. The 16 main audio groups can be assigned to any of the 8 automute groups and to VCA control from any combination of the 2 motorised grand master faders. A safe switch is again included for ea

10、ch group. The input for the groups is normally derived from the 16 group busses but for monitor applications the fader change over routes the 16 mono aux busses to the group faders. A separate Hi Z line input with its own dedicated gain control is incorporated which is ideal for playback of recorded

11、 material. Global change over from mic (record) to line (playback) is easy because it is under automation control. The sonic performance of the legendary XL3 equaliser is maintained including the full parametric mids and traditional Midas bass and treble shelving responses. In addition the treble an

12、d bass sections now have an extended frequency range and are switchable to full parametric operation. Each channel has a half normalised fully balanced insert send and return point which can be switched in or out from the front panel and set as either pre or post equaliser. These peak reading meters

13、 cover a 60dB range in 3dB steps and can be switched globally to monitor pre fader signals or pre insert and equaliser signals. Each channel can be routed to any combination of 42 audio busses comprising of 16 mono auxes, 8 stereo auxes, 16 stereo groups and 2 stereo masters. All this is switchable

14、on the module front panel but also via the automation control. Each channel can be controlled by any combination of the 10 motorised VCA master faders and 8 mute masters. Assignment of these busses is again switchable on the module front panel or by the automation control. A safe switch disconnects

15、the channel from all mute groups and an isolate switch removes the channel from all VCA control. Group aux inputs. Master. Matrix. Output meters. Automutes. 10 input VCA faders. Automation. An additional 16 inputs with treble and bass equalisation can be routed directly to the groups or via a pan to

16、 the masters mix and can be further controlled by assignment to any of the 10 VCA masters. The stereo master module provides the main left and right console outputs plus 4 more record outputs and a mono output. A solo to master facility is incorporated on the left, right and mono outputs to aid the

17、engineer at sound checks. As standard the 8 matrix outputs derive their signals from the 16 audio groups, left and right masters creating a 18 X 8 matrix. The module also houses the stereo aux masters which have their own outputs at all times but which can be routed directly into the matrix giving a

18、n additional 48 X 8 matrix sourcing direct from the input channels. 28 peak reading meters (each covering a 60dB range in 3dB steps) are used to monitor all the main outputs i.e. 16 groups, 8 matrix, 2 masters and 2 local outputs. They and can be switched globally to monitor pre fader or post fader

19、signals and can also be used to monitor the 24 aux outputs. The 8 automute masters can be assigned to any input or audio group and act on pre fader and post fader signals. Apart from assignment the operation of these mutes is entirely independent of the automation system. 10 motorised VCA master fad

20、ers control the channel and aux inputs whilst a further 2 VCA grand master faders control the audio groups. Each VCA master has a solo switch which gives the engineer an opportunity to monitor the signals within the VCA subgroup. Also incorporated is a VCA mute which act on post fader signals only a

21、nd effectively adds a further 12 automute scenes to the existing dedicated automutes. The automation system can store and recall up to 2000 scenes. All channel routing and major functions are automated as well as all major output mutes. The 12 motorised VCA master faders give dynamic control of sign

22、al levels within the console and all automation information can be exported or imported in a variety of different mediums for storage or console and system linking. XL4 Specification Overview and Statistics. 1. The XL4 is a 45 buss console with an additional 18 X 8 output matrix. The busses are as f

23、ollows:- 16 mono aux=16 16 audio sub groups=16 4 stereo aux=8 1 stereo master=2 1 stereo AFL=2 1 mono PFL=1 TOTAL=45 2. The XL4 has 8 automute sub groups, 10 input channel VCA sub groups which include VCA sub group muting and 2 grand master VCA sub groups with VCA sub group muting. 3. The XL4 has 48

24、 input channels with separate line and mic inputs plus an additional 16 aux line returns. 4. The XL4 has a total XLR input count of 171 as follows:- 48channel line inputs 48channel mic inputs 24aux bus inject inputs 16audio group bus inject inputs 16aux line returns inputs 8matrix bus inject inputs

25、3solo bus inject inputs 2master bus inject inputs 1comms mic input ( headset ) 1comms input ( and output ) 1talk mic input 1talk bus inject input 1midi input 5. The XL4 has a total XLR output count of 111 as follows:- 48input channel direct outputs 24aux outputs 16audio group outputs 8matrix outputs

26、 4record outputs 3master outputs 3solo outputs 2local outputs 2midi outputs 1talk output 6. The XL4 has a total bantam jack field count of 158 as follows:- 56input channel insert sends ( 8 spare for stereo module up grades ) 56input channel insert returns ( 8 spare for stereo module up grades ) 16au

27、dio group insert sends 16audio group insert returns 8matrix insert sends 8matrix returns 8parallel links ( 2 sets of 4 ) 3master insert sends 3master insert returns 7. The XL4 has 12 motorised moving faders for the VCA masters. 8. The XL4 has a total of 2539 automated switch functions as follows:- 9

28、60input channel aux send on off switches 480input channel VCA sub group assign switches 384input channel audio sub group assign switches 384input channel mute sub group assign switches 48input channel EQ on off switches 48input channel stereo master on off switches 48input channel phase switches 48i

29、nput channel insert on off switches 48input channel mic line switches 48input channel mute switches 16audio sub group mute switches 16aux line return mute switches 8matrix mute switches 3master mute switches 9. The XL4 has a total of 77 peak program meters with 20 LED segments each and monitoring 28

30、2 signal points within the console. XL4 Technical Specification. Input ImpedanceMic2K Balanced Line20K Balanced Input GainMicContinuously variable from ( all faders at 0dB )+ 15dB to + 70dB Mic + PadContinuously variable from - 5dB to + 50dB ChannelContinuously variable from Line Input- 20dB to + 20

31、dB All other Line Inputs0dB Maximum Input LevelMic+ 6dBu Mic + Pad+ 26dBu Channel Line inputs+ 26dBu All other Line Inputs+ 21dBu CMR at 1KHzMic ( gain + 60dB ) 70dB Mic + Pad ( gain + 40dB ) 50dB Line 60dB Frequency Response ( 20 to 20KHz )Mic to Mix ( gain + 60dB )+ 0dB to - 1dB Line to Mix+ 0dB t

32、o - 1dB Noise ( 20 to 20KHz )Mic EIN ref. 150 Ohms ( gain + 60dB )- 129dBu Line EIN ref. 150 Ohms ( gain + 10dB )- 100dBu System NoiseSumming Noise ( 20 to 20KHz )( 12 channels routed with faders down )- 86dB Line to Mix Noise ( 12 channels routed at 0dB, pan centre )- 81dB Summing Noise( 48 channel

33、s routed with faders down )- 80dB Line to Mix Noise ( 48 channels routed at 0dB, pan centre )- 75dB Distortion at 1KHzMic to Mix ( + 60dB gain, 0dBu output ) 0.03% Line to Mix ( 0dBu ) 0.03% Crosstalk at 1 KHzChannel to Channel - 100dB Mix to Mix - 90dB Channel to Mix 90dB Output ImpedanceAll Line O

34、utputs50 Ohms Balanced Source to drive 600 Ohms HeadphonesTo drive 8 Ohms Unbalanced Comms ( Bi - directional )600 Ohms Nominal Unbalanced Maximum Output LevelAll Line Outputs+ 21dBu Headphones+ 21dBu ( 8W into 8 Ohms ) Comms ( Bi - directional )- 10dBu Nominal Signal LevelMic- 70dBu to + 5dBu Chann

35、el Line Inputs- 20dBu to + 5dBu All other Line Inputs and outputs0dBu Headphones+ 10dBu Comms- 20dBu Comms and Talk Mic- 50dBu to - 20dBu ( auto gain ) Headroom at all stagesComms, Talk and Headphone 10dB All other signals 20dB MeteringType20 led peak reading Range- 36dBu to + 21dBu Colour GreenUp t

36、o + 9dBu Normal signal Colour Yellow+ 12dBu to + 15dBu High signal Colour RedOver + 18dBu Signal Too High Quantity77 ( Monitoring all main Inputs and outputs ) EqualiserLow pass slope12dB / Oct. Low pass frequencyContinuously variable - 3dB point from 1K to 40K Hi pass slope12dB / Oct. Hi pass frequ

37、encyContinuously variable 3dB point from 10Hz to 400Hz Treble GainContinuously variable + 15 dB to - 15 dB Centre detent = 0dB Treble Shelving Freq.Continuously variable - 3dB point from 1K to 20K Treble Bell Freq.Continuously variable centre from 1K to 20K Treble Bell BandwidthContinuously variable

38、 0.1 Oct. to 2 Oct. Centre detent = 0.5 Oct. Hi Mid GainContinuously variable + 15 dB to - 15 dB Centre detent = 0dB Hi Mid Freq.Continuously variable centre from 400Hz to 8K Hi Mid BandwidthContinuously variable 0.1 Oct. to 2 Oct. Centre detent = 0.5 Oct. Lo Mid GainContinuously variable + 15 dB to

39、 - 15 dB Centre detent = 0dB Lo Mid Freq.Continuously variable centre from 100Hz to 2K Lo Mid BandwidthContinuously variable 0.1 Oct. to 2 Oct. Centre detent = 0.5 Oct. Bass GainContinuously variable + 15 dB to - 15 dB Centre detent = 0dB Bass Shelving Freq.Continuously variable 3dB point from 20Hz

40、to 400Hz Bass Bell Freq.Continuously variable centre from 20Hz to 400Hz Bass Bell BandwidthContinuously variable 0.1 Oct. to 2 Oct. Centre detent = 0.5 Oct. XL401 INPUT MODULE BLOCK DIAGRAM XL402 INPUT POD BLOCK DIAGRAM XL403 INPUT FADER MODULE BLOCK DIAGRAM INSERT POINT RETURNSEND AUXILIARY SEND 1

41、OF 16 STEREO AUXILIARY SEND 1 OF 4 STEREO MASTERS SEND STEREO GROUP SEND 1 OF 8 SOLO LEFT SOLO SWITCH VCA FADER SOLO RIGHT PRE FADER LISTEN FOUR BAND FULLY PARAMETRIC EQUALISER DIRECT OUTPUT TO POD INPUT FROM POD PRE FADER SIGNAL TO POD AUTOMATION TO POD TEST INPUT (SERVICE USE ONLY) pre pre ins. &

42、eq. direct o/p 0 +10 1515 6 6 0 hi-mid width +/- 20.1 1 0.3 1515 6 6 0 treble width +/-2 0.1 10.3 1515 6 6 0 bass width +/-2 0.1 10.3 1515 6 6 0 lo-mid width +/-2 0.1 10.3 bell bell freq 1k 3k8k 20k freq 400 1k3k 8k freq 100 300800 2k freq 20 60160 400 + - + _ pre insert eq EQ pan l r c pre fade ON

43、+6 aux 1 pre ON st aux 1&2 0 +6 ST INS mute BALANCING OPTION TRANSFORMER BALANCING OPTION TRANSFORMER BALANCING OPTION TRANSFORMER +70 +25+35 +15 mic / O 48V -20 0 0 +20-20 30100 10400 hi-pass +21 +18 +15 +12 +9 +6 +3 0 -3 -6 -9 -12 -15 -18 -21 -24 -27 -30 -33 -36 DIR ECT PHANTOMGAIN HI-PASS FILTER

44、40k 10k 1k 3k lo-pass LO-PASS FILTER line MIC / LINE SELECT PHASE REVERSE PEAK - + - 1 2 3 4 5 6 7 8 9 10 group assign switches 1&2 3&4 5&6 7&8 9&10 11&12 13&14 15&16 safe solo iso 5 5 0 VCA GROUP 1 2 3 4 5 6 7 8 9 10 MUTE GROUP 1 2 3 4 5 6 7 8AUDIO GROUP 1&2 3&4 5&6 7&8 9&10 11&12 13&14 15&16 P AUT

45、OMATION PARALLEL BUS MUTE AUTOMATION ASSIGN SWITCHES MAY FUNCTION IN ANY ONE OF THREE WAYS AS SHOWN. FUNCTION IS DEPENDANT ON ASSIGN MASTER SWITCHES. SOLO CLEAR METER PRE FADER START RELAY = ANALOGUE SIGNALS = D.C. SIGNALS = AUTOMATION SIGNALS SIGNAL PATH KEY XL4 INPUT BLOCK DIAGRAM SOLO XL441 MATRI

46、X MODULE BLOCK DIAGRAM STEREO AUX LEFT OUTPUT METER PRE LEFT SOLO LEFT METER POST LEFT METER POST RIGHT METER PRE RIGHT + - METER PRE IN METER BRIDGE STEREO AUX LEFT INJECT STEREO AUX RIGHT INJECT STEREO AUX BUS LEFT STEREO AUX BUS RIGHT NOISE REF BUS TALK TO AUX STEREO AUX RIGHT OUTPUT + - 0 +10 st

47、ereo aux master o o MUTE MATRIX LEFT INJECT METER PRE RIGHT METER POST RIGHT SOLO RIGHT PFL SOLO LOGIC INS INSERT POINT RETURNSEND + - + _ VCA TALK mute 0 masters left +6 o o 0 masters right +6 o o global pre ON 5 5 0 TALK TO MATRIX PRE POST MASTER LEFT MASTER RIGHT GROUP 1 (1 OF 16 SHOWN) MATRIX LE

48、FT OUTPUT + - 0 +6 mix 1 o o solo MATRIX INJECT RIGHT METER PRE LEFT METER POST LEFT AUTOMATION INS INSERT POINT RETURNSEND + - + _ VCA TALK mute 0 masters left +6 o o 0 masters right +6 o o global pre ON 5 5 0 TALK TO MATRIX PRE POST MASTER LEFT MASTER RIGHT GROUP 1 (1 OF 16 SHOWN) MATRIX RIGHT OUT

49、PUT + - 0 +6 mix 1 o o solo MTX STEREO AUX TO MATRIX +21+ +18+ +15+ +12+ +9+ +6+ +3+ 0 -3- -6- -9- -12- -15- -18- -21- -24- -27- -30- -33- -36- change over matrix STEREO AUXILIARY SECTION XL4 MATRIX MODULE BLOCK DIAGRAM METER PRE SOLO ON SOLO LEFT SOLO RIGHT MASTER LEFT INJECT MASTER RIGHT INJECT TALK TO MASTER L TALK TO MASTER M MASTER AUX BUS LEFT MASTER AUX BUS RIGHT METER PRE RECORD METERS READS HIGHEST LEVEL OF LEFT OR RIGHT MUTE ALL SOLO I/P PFL AFL LEFT AFL RIGHT HEADPHONES LEFT HEADPHONES RIGHT MASTER LEFT OUTPUT MASTER MONO OUTPUT MASTER RIGHT OUTPUT RECORD