Crest_Audio_Century_Series_GT,_SP,_TC_Owners_Manual电路图.pdf

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1、CENTURYSERIES SP TC GT 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

2、 your new 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 y

3、ou with trouble-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

4、07652 USA TEL: 201.909.8700 FAX: 201.909.8744 Printed in USA RadioFans.CN 收音机爱 好者资料库 PAGE1 Feature Overview2 A brief description of design, features and functions. Wiring Conventions3 Contains diagrams indicating how connectors for Crest consoles are wired. Power Supply4 A brief description of the r

5、ack-mountable Century Series consoles power supplies. Power Connections5 A brief description of Crest console power connections. System Connections6 Contains diagrams illustrating conventional system connections. SP Input Module8 Profiles the SP input module. TC Input Module10 Profiles the TC input

6、module. GT Input Module12 Profiles the GT input module. GT Stereo Input Module14 Profiles the GT stereo input module. SP/TC Group Module17 Profiles the SP/TC group module. GT Group Module18 Profiles the GT group module. Matrix Module21 Profiles the matrix module. SP/TC Master Section23 Profiles the

7、SP/TC master section. GT Master Section25 Profiles the SP/TC master section. Technical InformationAppendix A Includes dimensions, specifications, console access details, user options, console block diagram, and rear panel layout. GlossaryAppendix B The specific details of console operation are descr

8、ibed here. SchematicsAppendix C Lists available schematics for SP/TC/GT Console Modules consoles with frame sizes of 40, 44, 52, or 64 modules use supply model XCVA06. Power Supply C O N S O L E S +20V -20V +48V +24V Press to Reset 4A ON Designed while the upper knob controls the center frequency ad

9、justed by the inner knob. These center frequencies are printed on the chassis around the upper knob. EQ IN Switch Inserts the EQ section into both L and R input channel sig- nals at once. An associated LED illuminates when the switch is down. AUX Level 13 / 24 Adjusts audio level of a mix for use as

10、 a monitor or an effect send. The signal source for this mix may be selected pre or post fader by an associated switch. The left channel is sent to the odd Auxes, and the right channel is sent to the even Auxes. POST/PRE Switch Selects the Aux 13 and Aux 24 signal sources between post and pre fader

11、positions. STEREO Switch AUX 5-8 Individual Level Controls normally send a summed (L+R) signal to the AUX outputs. When the STEREO switch is depressed, AUX 5 and 6 become a right send and left send respectively. This can be used for a stereo effects send. SP / TC / GT PAGE14 CENTURYSERIES +48V LINE

12、80 EQIN STEREO POST 5 6 7 8 XLR PAD 13 24 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 WID REVSTR MONO 1616 88 O + 1616 88 O + HF LF 100 40 150 300 6 1K 600 300 1K 3 5 8K 3 1K 5 10 15 20K 1616 88 O + MID GAIN 20 1

13、0 6 30 60 20 10 6 30 60 STEREO POST MUTE MONO 1- 2 3- 4 5- 6 7- 8 PFL SCENE MUTE SELECT A B C D PEAK SIG 5 6 7 8 SAFE 0 5 10 30 40 20 L- R 13 24 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 1 BAL WID REVSTR MONO A

14、UX 5 - 8 Individual Level Controls Adjusts audio level of a mix for use as a monitor or an effect send. The signal source for these mixes may be selected pre or post fader by an associated switch. WID(TH) Control When used together with the BAL control, the WID control provides a unique way to confi

15、gure stereo panning. When turned all the way counter-clockwise, this control convention- ally assigns the left signal to the left (odd) channel assignment, and the right signal to the right (even) channel assignment. When adjusted to the twelve oclock position, left and right signals are panned stra

16、ight up the middle, effectively summing them to mono. When this knob is turned all the way clockwise, the left and right signals are flip-flopped, left being assigned to the right (even) side, and the right side being assigned to the left (odd) side. BAL Control Positions the entire channel image be

17、tween the left (odd) and right (even) channel assignment. Together with the WID con- trol, this gives total control of the stereo image. MUTE Switch with LED Mutes the channel and all send functions. This switch does not affect the PFL switch or the Peak and Signal Present LED indi- cators. The LED

18、illuminates when the channel is muted from the local mute switch. MONO Bus Assign Switch Assigns the input signal directly to the Mono Clean bus. Bus Assign Switches (L/R, 1-8) Assigns the post Pan Signals to mix bus in odd/even pairs. Pan controls assignment between these two mix buses with extreme

19、 left pan assigning signal exclusively to the odd mix bus and extreme right pan assigning signal exclusively to the even mix bus. When the pan is in its center position, signal is fed equally to the odd (left) and even (right) mix bus. When used in stereo applications, the channel signal may be loca

20、ted anywhere with- in the stereo image as controlled by the Pan control. PFL Switch Samples the channels signal pre-fader and allows for monitor- ing within the master section of the console. This signal is not affected by the Mute Switch. When depressed, the signal level can be seen on the Left/Rig

21、ht meters, and heard via the mixers headphone or local monitor output. When this PFL Switch is depressed, the channel PEAK LED indicator illuminates at a lower intensity. When used as a status indicator of switch posi- tion, the Peak LED indicating circuit remains fully operational by illuminating a

22、t a much higher intensity than its use as a PFL status indicator. PEAK/PFL LED Indicator Illuminates RED when any of the points monitored come with- in 3db of the clipping point. Signal is sampled after the input preamplifier stage, after the EQ section, and after the fader. This LED also serves as

23、a PFL ON indicator, but at a much lower intensity than when it is used to indicate clipping. SIGNAL PRESENT LED Constantly displays level activity of the input channel by vary- ing in intensity. 100mm Fader Used for control of all outputs of the channel except those Aux output sections selected by s

24、witch to a pre fader position. (The Insert output level is not affected by the fader position.) Scene Mute Assignments Assign the input channel to any of the four scene mute groups. Scene mute combines with the modules local mute button, and actuates the local mute LED. Scene Mute Safe Switch Disabl

25、es any selected scene mute assignments. An associated green LED indicates the channel is in a safe state. Rear Connections Direct Out This jack provides the direct output signal (post fader i.e., one becomes the other and vice versa. Group PFL Allows for Pre Fader Listening of the Group signal. Grou

26、p Peak see AUXILIARY 34 SWITCH for more info on toggling between 1,2 and 3,4. Aux Sends 5-8 (green) are typically used for effect sends. Each effect return section has Aux 1-4 Send controls, which could be used for adding effect return signal to the monitor mix. Internal jumpers select between pre/p

27、ost EQ. Bus Assignment Switches Wherever these switches occur, they assign the post Pan pot signals to odd and even mix buses. The Pan pot controls assignment between odd and even mix buses with extreme left assigning signal exclusively to the odd mix bus and extreme right the even mix bus. It is a

28、common practice to assign all effect return channels to a sub group channel. This enables the overall amount of effect signal to be controlled from a single fader location. Between musical numbers, it is possible to turn off the effects with this group fader or group mute switch or to vary the amoun

29、t of overall effect return in reference to the dry original signals, using the group fader control. DC Power Indicators Each Century Series console uses a variety of electrical volt- ages which are fed to the console from the power supply. The status of each operating voltage (+20, -20, +48, +24) is

30、 indicat- ed by four LEDs on the master module. If the console ever behaves abnormally, first check these LEDs to make sure that the power supply is providing the proper voltages. Dim Switch This GT Master Section switch produces a -12dB attenuation in signal to the local monitor. This feature is us

31、eful for tempo- rary lowering of local monitor levels without actually adjusting any pots or faders. (Local monitors are automatically dimmed when Talkback button is pressed.) Direct Out Jack Each input module has an unbalanced 1/4 direct out jack. The output from this jack is post-fader unless the

32、AUXILIARY 8 DIRECT switch is depressed. When this switch is down the output is controlled by the Aux 8 pot. See AUXILIARY 8 DIRECT for more information on that switch. Effect Auxiliary Level Control See AUXILIARY SEND CONTROL Effect Return EQ Each effect return section has a two-band fixed EQ. These

33、 High and Low frequency controls are centered at 10kHz and 80Hz respectively. Effect Return Gain This control adjusts the gain on the signal returning from the effect. Use the effect return signal present and peak LEDs to set the gain properly. Effect Return Subgroup Assignments Much like the switch

34、es on each input module, these switches assign the corresponding effect return to any or all subgroups. The Pan control operates in the same fashion, that is; extreme left assigning signal exclusively to the odd mix bus and extreme right the even mix bus. EQ In Switch This input module switch, when

35、depressed, inserts the EQ sec- tion into the signal path and illuminates a green LED to the left APPENDIXB SP / TC / GT APPENDIXB CENTURYSERIES of the switch. With the switch in the up position, the input sig- nal bypasses the EQ section and continues unmodified. EQ Sections These controls are used

36、to modify the tonal quality of an audio signal. All Century Series consoles have a four-band EQ sec- tion on each input module. The effect return sections, within the group modules, have two-band EQ sections. Within an input module, the EQ section will affect the signal only if the EQ IN button is d

37、epressed. EQ Control knobs - Fixed EQ: When there is only one knob, it controls the boost or cut of a fixed frequency range. The SP input modules and all effect return sections have these single knob/fixed EQ controls. EQ Control knobs - Sweep EQ: When there are two knobs, the inner knob controls th

38、e boost or cut as in the fixed EQ, while the outer knob controls the center frequency adjusted by the inner knob. These center frequencies are printed on the module around the outer knob. The GT input module has the frequency sweep knobs on all four bands, while the TC input module has them only on

39、the mid-frequen- cies. EQ Sweep Control See EQ SECTIONS External Talkback Input Switch This switch disconnects the two regular talkback microphone inputs and switches on the external talkback input XLR found on the rear panel of the GT master section. External Talkback Output Switch This switch acti

40、vates the external talkback output XLR. The signal fed to the connector is the same signal being sent to the talkback assignments. Fader The fader is used for primary level control of the channel, except those Aux output sections selected to a pre-fader posi- tion. (The Insert output level is not af

41、fected by the fader posi- tion.) Optimum noise performance is achieved when the fader is operated near the 0 fader position and all gain controls are properly set. This does not mean that all channels should be set at 0 . Proper mixing requires varying of at least some of the faders. The 0 point sho

42、uld be considered a reference, with all volume changes taking place between the -10 and 0 reference points at normal desired levels. For effect, faders may be oper- ated below this level, provided no faders within the group or master section are increased in level to compensate for the inputs lower

43、fader setting. Fader Reverse Switch This switch swaps roles between the Effect Return Level pot and the Subgroup Fader. When depressed, this switch causes the Effect Return Level to be controlled by the Subgroup fader, and the Subgroup level to be controlled by the Effect Return Level pot. If you wa

44、nt the control of the fader when setting effect returns, this switch is particularly helpful. A red LED indicator is provided to the left of the switch and illuminated when the switch is depressed (reverse mode). Gain Control This knob adjusts input gain circuitry for proper electrical operation. Ad

45、just this control by monitoring signal present (green) LED for bright intensity, with peak (red) LED flashing only occasionally when the loudest program material is pre- sent. When a PFL switch is depressed on an input channel, this signal can be observed on the Left/Right monitor meters within mast

46、er module. When using this method for adjustment of the Gain Control, normal signal level should be adjusted to show a level between -9 VU and 0 VU. Constant distortion on an input channel could mean that the input channel is being overdriven. Check for improper input gain adjustment first. Group As

47、signments See BUS ASSIGNMENT SWITCHES Group Meter Located at the top of each subgroup module, this ten-segment LED meter monitors the post-fader output of the group. Similar meters on the Master Section monitor Left and Right outputs. Group XLR Switch This switch assigns the post fader group signal

48、to the group out XLR located on the rear panel of the group module. Headphone Jacks Located at the top of the master section and under the right side of the hand rest, these jacks provide a pre-fader stereo headphone level output of the Left and Right outputs. When anything on the console is PFLd or

49、 AFLd, the R+L output is replaced by whatever is PFLd/AFLd. Headphone Level Control This control adjusts the level of the signal fed to the two head- phone jacks; located in the upper right portion of the master section, just below arm rest on the far right side. HF Peak/Shelve Switch This switch is used for switching the high frequency EQ con- trol between the normal shelving setting to a peak setting. High Pass Switch See 80Hz HIGH PASS SWITCH HMF EQ Control See EQ SECTIONS Insert Jack This jack allows you to access a point in the channels electri- cal circuit for inserting