crestvxman11-3-97电路图.pdf

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1、CENTURYSERIES OWNERSMANUAL RadioFans.CN 收音机爱 好者资料库 Congratulations on your purchase of a Century Series console. All of us at Crest Audio in Paramus, New Jersey, USA, support your decision, knowing your console contains the finest combination of design and manufacture in the industry. While your new

2、 Century Series console is one of the most feature-packed available, great effort has been put into making it simple to operate. This manual explains the functions of your new console, how they operate and how they relate to each other. If properly cared for, your new console will provide you with t

3、rouble-free, sonically accurate mixing clear into the next Century and beyond. Please keep the following contact information on hand: Crest Audio Customer Service Dept. 100 Eisenhower Drive Paramus NJ 07652 USA TEL201.909.8700 FAX201.909.8744 Crest Audio Inc. 100 Eisenhower Dr., Paramus NJ 07652 USA

4、 TEL: 201.909.8700 FAX: 201.909.8744 Printed in USA RadioFans.CN 收音机爱 好者资料库 Feature Overview2 A brief description of the Vx design, features and functions. Mixing with VCAs3 Adapted from “Mixing with VCAs,” by Mark Smith, in LIVE SOUND! Magazine. Wiring Conventions5 Contains diagrams indicating how

5、connectors for Crest consoles are wired. Rear Connections6 Details the rear panel input and output connections to be made to the Vx console. Power Supply8 A brief description of the rack-mountable Century Series consoles power supply. Power Connections9 A brief description of Crest console power con

6、nections. Console Cooling9 A brief description of the dual-fan cooling setup. System Connections10 Contains diagrams illustrating conventional system connections. Input Module12 Profiles the Vx input module. The module and rear panel are illustrated, and described. Stereo Input Module14 Profiles the

7、 Vx stereo input module. The module is illustrated, and described. Optional Multi-Input Module17 Profiles this optional double-module, which provides four stereo inputs, summed together to create a stereo sub-mix. Group Module19 Profiles the Vx group module. The module is illustrated, and described.

8、 Master Section21 Profiles the Vx master section. The modules are illustrated, and described. Meter Bridge23 This section profiles the Vx meter bridge. Each type of meter is illustrated and described. Special Facilities24 This section profiles Vx console expansion and LCR Panning Technical Informati

9、onAppendix A Includes dimensions, specifications, console access details, user options, console block diagram, and rear panel layout. SchematicsAppendix B Lists available console and power supply schematics. TABLE OFCONTENTS PAGE1 RadioFans.CN 收音机爱 好者资料库 Feature Overview The Century Series has the a

10、udio quality, features, and func- tions demanded by the modern music professional. The Vx is the first Crest Console to use VCAs, includes all of the basic features found in other Century Series consoles and adds an extensive meter bridge and a set of advanced new features to accommodate more demand

11、ing applications. Vx features: Mixing flexibility via 8 conventional Audio Groups B)the Lead Vocal is assigned directly to the LEFT OR 2) Turn up all Aux sends on the drum inputs 10dB (not desirable); OR 3) Turn up all Drum inputs 10dB on the input faders. The reason that one of these options must b

12、e chosen is because effects busses (aux busses) do not and will never increase or decrease in level when an Audio Submaster is turned up or down. This alone is the most critical aspect of why Audio Submasters are not acceptable for controlling a mix. What has been described here is a drum solo situa

13、tion; imagine the prob- lems encountered when adding the other Submasters! A common solution used when using Audio Submasters is to mix on the input faders. This way all effects will “follow” the moves made on the faders in direct proportion. Although it is a painful way to mix, some engineers will

14、always mix on the input faders. (continued on page 8) VX PAGE3 CENTURYSERIES Mixing with VCAs (adapted from Live Sound! magazine) One of the major benefits of VCAs is that any move made on a VCA Subgroup will cause all inputs assigned to that Subgroup to move in direct proportion with it. Inherently

15、, all effects assigned (or turned up) on any input modules that are controlled with VCAs will “follow” any moves made in the exact proportion also. If a subgroup is moved “3db”; then all effects will move “3db”. The wet/dry blend always remains the same. Wet / Dry Blending The word “blend”, is used

16、to describe the relationship between the dry “mix” (all inputs minus the effects) and the wet “mix” (all the effect returns). There is no such thing as Wet/Dry Blending when using Audio Submasters, unless mixing is done on the inputs. Any time an Audio Subgroup is moved the wet/dry blend is destroye

17、d, as there is no Mix Integrity or True Post Effect Sends. The only true way to change the wet/dry blend would be to adjust the Master Output on any effect send. This is also an undesirable way to adjust a mix. With VCAs assigned as in the previous example, it is a simple task to adjust the balance

18、between the dry and the wet by simply moving VCA Subgroup 6. Any moves made with the Band Master VCA (Subgroup 8) will cause everything will fol- low in direct proportion. The same is true for the background vocal mix (on VCA Group 7). If VCA Group 7 is moved up or down, all reverbs and delays turne

19、d up on all background vocal inputs will remain in the exact proportion you have estab- lished. Therefore, once a wet/dry blend is established, it can never be changed by moving VCA groups. Now it is possible to mix with 4 faders, or if you will, 4 VCAs: Lead Vocal, Background Vocals, Band and Effec

20、ts. Of course, there will always be small adjustments that need to be made on the input faders from time to time to tweak a mix. It has been suggested that when attempting to mix on VCAs for the first time, the operator turn off the sound system and monitor with headphones. All the subtle nuances ac

21、hieved can then be heard, and the ability to easily control a mix will become obvious. C This “VCA Mixing” section was adapted from an article enti- tled “Mixing with VCAs,” written by Mark Smith, which appeared in LIVE SOUND! Magazine. Anthony McLean is the editor of LIVE SOUND! You can contact him

22、 by Fax at (913) 677.6621, by e-mail at CIS 75300,3141 or by snail-mail at: LIVE SOUND! Magazine 4741 Central #222 Country Club Plaza Kansas City, MO 64412-1533 U.S.A. VX PAGE4 CENTURYSERIES VX PAGE5 CENTURYSERIES Wiring Conventions Crest consoles are wired with connectors that are used throughout t

23、he professional audio industry. Wiring is as follows: 12 3 PIN 1 = GROUND PIN 2 = POSITIVE PIN 3 = NEGATIVE OUTPUT XLRINPUT XLR PIN 3 PIN 1 PIN 2 PIN 3 PIN 2 PIN 1 TIP - POSITIVE RING - NEGATIVE SLEEVE - GROUND INPUT TIP - LEFT RING - RIGHT SLEEVE - COMMON Headphone Connections: Bal Input, Bal Outpu

24、t, Direct Out, Insert Send, Bal Insert Return, Tape In Connector: Headphone Output Standard TRS (Tip - Ring - Sleeve) 1/4 Plug Standard TRS (Tip - Ring - Sleeve) 1/4 Plug TIP - SEND RING - RETURN SLEEVE - GROUND INSERT Connector: Stereo Input Module Insert L, Insert R Standard TRS (Tip - Ring - Slee

25、ve) 1/4 Plug Rear Connections The rear connections facilitate the numerous inputs and outputs necessary for successful mixing. Since the console is of little use until it is wired into a whole system, an understanding of what each input and output does is necessary before it can be properly connecte

26、d. Use the descriptions and diagrams on the next two pages to plan your cabling scheme. Levels Unless specified, nominal levels are: O VU = +4dBu = 1.23V RMS Max Level = +28 dBu balanced, +22dBu unbalanced Impedances Mic In - 4k Line In - greater than 10k Outputs -140 Input Module Connections Direct

27、 Out This unbalanced 1/4 TRS jack delivers the direct output signal (post fader the outer knob con- trols the center frequency. Center frequencies are indicated around the outer knob. PEAK/SHELVE HF Switch Used for switching the high frequency EQ between the nor- mal shelving setting to a peak setti

28、ng. SWITCHABLE Q on HI MID and LO MID EQ Q is switchable between .8 (switch up) and 1.8 (switch down). PEAK/SHELVE LF Switch Used for switching the low frequency EQ between the nor- mal shelving setting to a peak setting. EQ IN Switch w/LED Inserts the EQ section into the input channel (post insert,

29、 pre fader). An associated green LED illuminates when the switch is down. PRE 7 8 9 5 2 0 1 3 46 10 1 2 3 4 5 6 7 8 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 100 40 200 4 6 800 PEAK HPF EQ

30、 IN HM LM HF LF GAIN40 30 20 50 70 3 1.5K 8 15 20K 40 20 80 150 300 400 PAD LINE +48V Q 2 100 4 1K 2K 6 1K 400 2 4 6 8K 6 INSERT PAN DIR OUT PEAK Q A U X S E N D S P U S H O N - O F F INPUT MUTE SOLO PRE SAFE 8 9 2 0 1 10 2 3 4 5 6 7 8 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 1

31、0 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 PAN PK +8 0 -6 SIG L C R P A N DIR OUT M L R 1 3 5 7 2 4 6 8 VCA 10 0 5 10 20 30 15 40 60 V C A G R O U P S 1 - 8 M U T E G R O U P S A - D A U X S E N D S P U S H O N - O F F 1 1 2 3 5 4 6 7 8 A B C D VX PAGE1

32、3 CENTURYSERIES AUX SENDS 1- 8 Individual Level Controls These Push-On/Push Off pots adjust signal level sent to respective Aux buses. Pushing the switch down turns the send on or off. An associated two color LED indicates status: OFF indicates an off state; GREEN indicates the Aux send is on, and n

33、ot muted; RED indicates the Aux send is on, but muted. The signal source for these mixes may be selected (by Aux bus) to be pre or post fader by the GLOBAL switches located in the Vx Master section. Aux 8 DIR OUT Switch w/LED Removes the Aux 8 signal from the Aux 8 bus, and assigns the signal to the

34、 direct out 1/4 connector on the rear panel, instead of the normal post fader Dir Out signal. AUX 8 PRE Switch w/LED Switches the Aux 8 signal source between pre and post-fader. PAN CONTROL Positions the channel image between left and right or between left-center-right; operates with groups when pan

35、 switch is selected. (See L-C-R Switch). In LCR mode, continuous variation is available between full level to left only (pan full counter-clockwise position) full level to right only (pan full clockwise) and center position (full level to mono/center, no output to left or right). MUTE Switch w/LED T

36、urns off the channel audio to outputs. LED on = audio off. Both pre and post fader audio is muted. When pre-fader sends should not mute refer to USER OPTIONS. MUTE responds to the local switch, the Mute Groups, and VCA Group Mute (internal user option). MONO Bus Assign Switch Assigns the input signa

37、l to the Center / Mono bus. If L-C-R is selected then PAN adjustment will be effective. L-C-R Switch Changes the PAN function from normal L-R to L-C-R opera- tion. The mix to the L,R while the upper knob controls the center frequency adjusted by the lower knob. Center frequencies are indicated aroun

38、d the upper knob. EQ IN Switch w/LED Inserts the EQ section into both L and R input channel signals at once. An associated green LED illuminates when the switch is down. AUX SENDS 1- 8 indiv. level controls The Aux Individual Level Controls send a summed (L+R) sig- nal to the AUX outputs. These Push

39、-On/Push Off pots adjust signal level sent to respective Aux buses. Pushing the switch down turns the send on or off. An associated two color LED indicates status: OFF indicates an off state; GREEN indicates the Aux send is on, and not muted; RED indicates the Aux send is on, but muted. The signal s

40、ource for these mixes may be selected (by Aux bus) to be pre or post fader by GLOBAL switches located in the Vx Master section. 1616 88 O+ 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5

41、 2 0 1 3 46 10 HPF EQ IN GAIN 40 30 20 50 70 40 20 80 150 300 400 PAD LINE +48V INSERT LR BAL STEREO A U X S E N D S U S H O N - O F F P 1 2 3 4 5 6 7 8 2 1K 5 12 18 20K 1616 88 O+ HF 100 40 300 500 6 1K 600 300 1K5 4 5 8K MID LF IMG WID MONO 1616 88 O+ STEREO MUTE SOLO SAFE 8 9 2 0 1 10 7 8 9 5 2 0

42、 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 LR BAL PK SIG L C R S U M STEREO M L R 1 3 5 7 2 4 6 8 A U X S E N D S U S H O N - O F F P 2 3 4 5 6 7 8 VCA IMG WID L R PK SIG STRREV MONO 10 0 5 10 20 30 1

43、5 40 60 1 V C A G R O U P S 1 - 8 M U T E G R O U P S - D A LCR BAL VX PAGE15 CENTURYSERIES STEREO Switch w/LED Like the AUX 1-6 controls, AUX 7 overload = red. PFL switches with indicators for the L Red=Peaking Signal SOLO Switch w/LED This switch sends the associated Matrix signal to Solo. MATRIX

44、OUT Level w/LED This rotary fader controls the master level of the associated Matrix to the rear XLR connector. GROUP Section PAN CONTROL Positions the Group image between left and right or between left-center-right. L-C-R Switch Changes the PAN function from normal L-R to L-C-R opera- tion. The mix

45、 to the L, R one becomes the other. Group Mono Assign Assigns the associated Group signal to the Mono bus. Group L-R Assign Assigns the Group signal to the Left and Right buses. Matrix Pre/Post w/LED Switches the Matrix send between pre and post-fader settings. Group Peak this is different to input

46、mute. (Can be changed to function as an input mute via an internal jumper.) UNITY LED Indicates when VCA control fader is at “Unity Gain”, a posi- tion where any inputs subsequently assigned to that VCA will not receive any gain change upon assignment. This permits assignment of inputs to VCAs on th

47、e fly, without affecting the mix at the fader stage. HEADPHONES TB MIC 7 8 9 5 2 0 1 3 46 10 LEV 1KHZ 100HZ 10KHZ PINK NOISE 5X2 ON EXT TB IN 7 8 9 5 2 0 1 3 46 10 LEV EXT TB OUT MONO L - R GROUPS 1 3 5 7 2 4 6 8 7 8 9 5 2 0 1 3 46 10 DIM MUTE SOLO DEFEAT CENTER L - R TAPE LEV TALKBACK OSCILLATOR +

48、MASTER ADDITIONAL JACKS LOCATED BELOW ARMREST SUM MONO TB/OSC ASSIGN FREQ AUXES 7 8 9 5 2 0 1 3 46 10 LEV LEV 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 STEREO PROGRAM IN SUM MONO 7 8 9 5 2 0 1 3 46 10 MUTE LAMP DIM AUX 1 2 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 1616 88 HF - 0 + 1616 88 LF - 0

49、 + MONO LEFT AUX + CENTER PRE MUTE SOLO SIG/PEAK 7 8 9 5 2 0 1 3 46 10 L - R MONO +24 -20 +20 DC POWER IN +48 ALT GAIN AUX 3 4 AUX 5 6 7 8 9 5 2 0 1 3 46 10 AUX 7 8 7 8 9 5 2 0 1 3 46 10 BAL LEV 7 8 9 5 2 0 1 3 46 10 LEV 1616 88 HF - 0 + 1616 88 LF - 0 + MUTE L R MONO STEREO AUX IN A SOLO GLOBAL PRE MUTE SOLO MUTE LEV 7 8 9 5 2 0 1 3 46 10 SOLO GLOBAL PRE AUX OUT 3 MUTE SOLO AUX OUT 5 GLOBAL PRE MUTE 7 8 9 5 2 0 1 3 46 10 LEV AUX OUT 7 SOLO GLOBAL PRE AUX OUT 1 7 8 9 5 2 0 1 3 46 10 LEV LEV 7 8 9 5 2 0 1 3 46 10 7 8 9 5 2 0 1 3 46 10 RIGHT AUX 1616 88 HF - 0 + 1616 88 LF -