Soundcraft-GigRac300-mix-tm 电路图 维修手册.pdf

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1、1 GIGRAC 300/600 Technical Manual RadioFans.CN 收音机爱 好者资料库 2 GIGRAC 300/600 Technical Manual IMPORTANT Please read ALL parts of this manual carefully, particularly the Safety Instructions in the User Manual before using your mixer for the first time. Harman International Industries Ltd. 2003 All righ

2、ts reserved Parts of the design of this product may be protected by worldwide patents. Part No. ZM0287 Issue: 1 Soundcraft is a trading division of Harman International Industries Ltd. Information in this manual is subject to change without notice and does not represent a commitment on the part of t

3、he vendor. Soundcraft shall not be liable for any loss or damage whatsoever arising from the use of information or any error contained in this manual. No part of this manual may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, electronic, electrical, mechanic

4、al, optical, chemical, including photocopying and recording, for any purpose without the express written permission of Soundcraft. Harman International Industries Limited Cranborne House Cranborne Road POTTERS BAR Hertfordshire EN6 3JN UK Tel:+44 (0)1707 665000 Fax: +44 (0)1707 660742 RadioFans.CN 收

5、音机爱 好者资料库 3 GIGRAC 300/600 Technical Manual Contents User GuideSECTION 1 Schematic DiagramsSECTION 2 PCB LayoutsSECTION 3 Parts ListSECTION 4 RadioFans.CN 收音机爱 好者资料库 4 GIGRAC 300/600 Technical Manual 3 CONTENTS IMPORTANT SAFETY INSTRUCTIONS. 4 Introduction . 7 Quick Start Guide . 8 A Note on Channel

6、 Use. 14 Front and Rear Panels. 15 Master Section GigRac 600. 18 Master Section GigRac 300. 24 Rear Panel GigRac 600 . 28 Rear Panel GigRac 300 . 30 Rackmounting Your GigRac. 32 Connectors and Leads . 33 Block Diagram GigRac 600 . 34 Block Diagram GigRac 300 . 35 Warranty . 36 Gigrac 300 / 600 Speci

7、fications. 37 Your Notes: . 38 NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a comm

8、ercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful in

9、terference in which case the user will be required to correct the interference at his own expense. 4 IMPORIMPORIMPORIMPORIMPORT T T T TANT SAFETY INSTRUCTIONSANT SAFETY INSTRUCTIONSANT SAFETY INSTRUCTIONSANT SAFETY INSTRUCTIONSANT SAFETY INSTRUCTIONS CAUTIONS To avoid the risk of fire, replace the m

10、ains fuse only with the correct type and value fuse, as marked on the rear of the product. ATTENTION: - Afin de rduire le risque de feu remplacer seulement avec fusible de mme type. MAINS VOLTAGE SELECTION This setting is NOT User Adjustable. The units are capable of operating at either 230V AC or 1

11、15V AC mains voltages 10%. REPLACING MAINS FUSE Remove the mains lead from the connector. Use a small screwdriver to unscrew the fuse carrier from its location to the left of the mains power connector. Check the fuse is of the correct type and value and replace if necessary; also check that the volt

12、age rating as marked on the rear panel is correct for the mains supply level before switching the unit ON again. If the mains fuse fails repeatedly this may be because an electrical safety hazard exists. The unit must be taken out of service and referred to the Soundcraft dealer from where the equip

13、ment was purchased. THIS UNIT MUST BE EARTHED Under no circumstances should the mains earth be disconnected from the mains lead. ATTENTION: - Cet appareil doit tre branch la terre. The wires in the mains lead are coloured in accordance with the following code: UK dont worry, this is perfectly normal

14、. Note: Be careful not to point the microphone at the loudspeakers or you could accidentally create unpleasant feedback sounds. A note on Condenser Microphones If your microphone is a condenser microphone that requires phantom power you will need to switch on the 48V phantom power switch (3) located

15、 to the left of the Graphic Equaliser. Before doing this make sure that the Main Volume control (2) on the chosen channel is turned fully off to avoid causing an unpleasant sound that might damage your speakers. 12 3.Adding Treble or Bass to the signal The GigRac offers simple Treble and Bass contro

16、l for changing the tone of the signal. Treble (5) To add or remove some brightness or sparkle to or from a signal, use the Treble control. In the center click position (0) the Treble control has no effect. Turning it clockwise will boost the treble frequencies making the signal sound brighter. Turni

17、ng it anti-clockwise will have the opposite effect by removing the treble frequencies and making the signal sound less bright. The Treble control is handy for adding some sparkle for example to an acoustic guitar, or for reducing the s sound from sibilant vocals. Bass (6) To add some bass thump to a

18、 signal or remove some boominess or rumble, use the Bass control. In the center click position (0) the Bass control has no effect. Turning it clockwise will boost the Bass frequencies making the signal sound punchier and more bassy. Turning it anti- clockwise will have the opposite effect by removin

19、g the bass frequencies and making the signal sound less boomy. The Bass control is useful for making a bass drum sound punchier, or alternatively could be used for reducing explosive b and p sounds from a vocal signal. 13 4.Plugging in an Acoustic Guitar, Stereo Keyboard or CD Player The GigRac will

20、 happily receive signals from instruments with either mono or stereo outputs such as guitars (Mono) or stereo keyboards and CD Players (Stereo) Before plugging in, make sure the Main Volume control (2) for the chosen channel is turned fully off to avoid accidental damage to your speakers. Acoustic G

21、uitars Set the Main Master Volume control (1) to about halfway. Make sure the Main Volume control (2) on the channel you are about to use is turned fully down. Plug the guitar lead into the jack socket in the center of the combination input socket (7) on the channel of your choice. Turn up the volum

22、e control on your guitar to about halfway, and then gradually turn up the Main Volume control (2) until you hear the guitar signal appearing in the loudspeakers.You should also see activiity on the Main Ouptut meter (4). Stereo Keyboards and CD Players The GigRac offers four channels that can receiv

23、e stereo inputs. Two of these channels are equipped with RCA/Phono connectors (Channel 5 and 6) (8) and two with Jack connectors (Channels 7 and 8) (9). Connect up the Left and Right outputs of your CD player or Cassette deck to the Left and Right RCA/Phono inputs on either Channel 5 or 6 of the Gig

24、Rac. Turn up the Main Master Volume control (1) to about halfway, and then turn up the Main Volume control (2) on the chosen channel until you hear the signal appearing in the loudspeakers. Connect up the Left and Right outputs of your Stereo Keyboard to the Left and Right Jack inputs on either Chan

25、nel 7 or 8 of the GigRac. Set the volume control of your keyboard to about halfway. Turn up the Main Master Volume control (1) to about halfway, and then turn up the Main Volume control (2) on the chosen channel until you hear the signal appearing in the loudspeakers. You may now use the Treble and

26、Bass controls as mentioned above to change the tone of the signals. 14 5.Apply one of the 8 GigFX digital effects to the signals The GigRacs GIGFX Processor (10) has a choice of 8 studio quality digital effects that can be added to any individual or group of signals running through the mixer. Usuall

27、y vocals require some digital reverb or echo to be added to them in order to create a more spatial sound that is pleasing to the listener. Make sure the FX On button is selected To try this out simply select one of the 8 GigFX presets such as Hall Reverb using the selector knob (14). Make sure the B

28、ypass switch (11) is not selected. Turn the FX to Main control (12) to about halfway and then gradually turn up the individual FX send control (13) on the channel you wish to add the effect to. As you turn up the FX send level you should hear the signal change. By pressing the FX On (11) switch to t

29、he off position you can compare the original dry signal with the wet effected signal. You can now turn the selector knob (14) to select different types of effects for comparative purposes A Note on Channel UseA Note on Channel UseA Note on Channel UseA Note on Channel UseA Note on Channel Use Channe

30、ls 1-4 are the most sensitive. It is better to use these channels for microphones (particularly if your microphones are fitted with jack plugs), and guitars with passive pickups. It is likely that you will need to have the pad buttons pressed in if you use mics fitted with XLRs. Channels 5-8 are les

31、s sensitive, they are ideal for line-level devices such as keyboards, CD players and tape players. They will also work with guitars with active pickups. Microphones fitted with XLRs will also work (unless they need phantom power). 15 FrFrFrFrFront and Rear Panelsont and Rear Panelsont and Rear Panel

32、sont and Rear Panelsont and Rear Panels Front Panel (GigRac 300 and 600) Input channel The GigRac has a total of 8 channels. Channels 1-4 are designed to handle mono microphone or mono line level signals only. Channels 5-8 are designed to handle mono microphone and mono line level signals but will a

33、lso accommodate stereo signals as well. (The GigRac 300 and 600 are mono devices and therefore any stereo signals connected will be automatically summed to mono before being output.) (1)Input Connector This connector is a combination Jack/3 Pin XLR connector and can receive any of the following type

34、s of input connectors Microphone cables with Jack connectors Microphone cables with 3 pin XLR connectors Line input cables with Jack connectors (e.g. guitars, keyboards etc.) Line input cables with 3 pin XLR connectors. 1 3 4 6 7 5 2 Input Channel 16 (2) P(2) P(2) P(2) P(2) PAD switch (Channels 1-4

35、only)AD switch (Channels 1-4 only)AD switch (Channels 1-4 only)AD switch (Channels 1-4 only)AD switch (Channels 1-4 only) Pressing the PAD switch reduces the input level by 20dB allowing line or mic level signals that would normally be too loud for the Input stage to handle to be connected without a

36、ny audible distortion. (3) Main V(3) Main V(3) Main V(3) Main V(3) Main Volume Controlume Controlume Controlume Controlume Contrololololol The Main Volume Control determines the amount of level sent from the channel to the main output mix. This allows each channels relative volume level to be blende

37、d together to create the final mix whose overall level is then controlled by the Main Master Volume control (8) . (4) Mon V(4) Mon V(4) Mon V(4) Mon V(4) Mon Volume Controlume Controlume Controlume Controlume Contrololololol The Monitor (Mon) Volume Control determines the amount of level sent from t

38、he channel to the Monitor (Mon) Output (20) and also the Phones Output(18) This allows each channels relative volume level to be blended together to create a separate monitor mix whose overall level is then controlled by the Mon Master Volume control (9). This feature is used mainly for creating a f

39、oldback mix for the musicians and would normally be sent to a monitor speaker with its own amplifier. (This could also be used for creating a headphone mix) The Mon Volume Control operates independent of the Main Volume Control and will therefore not be affected if the Main Volume Control is turned

40、up or down. (For the more technically minded, the signal is sourced Pre- Fader and Post EQ) (5) FX Control The FX Control determines the amount of level sent from the channel to the GigFX digital effects processor and also to the FX Bus output connector (21) This allows each channels relative level

41、to be blended together to create a separate effects mix whose overall level is then controlled by the FX to Main (24) and FX to Mon (25). The FX Bus Output connector could also be used to connect to other external devices such as effects processors or recorders. 17 (6) Bass Contr(6) Bass Contr(6) Ba

42、ss Contr(6) Bass Contr(6) Bass Contrololololol The Bass Control is set at 80Hz and allows you to either add or remove the low frequency content of the signal by 15dB. Rotating the control clockwise will boost the signal, rotating the control anticlockwise will cut the signal. This control is useful

43、for adding more thump to low frequency signals such as bass guitars and kick drums but can also be used to remove unwanted rumble or boominess from signals such as vocal or instrument microphones. (7) T(7) T(7) T(7) T(7) Tr r r r reble Contreble Contreble Contreble Contreble Contrololololol The Treb

44、le Control is set at 12kHz and allows you to either add or remove the high frequency content of the signal by 15dB. Rotating the control clockwise will boost the signal, rotating the control anticlockwise will cut the signal. This control is useful for adding crispness or sizzle to signals with a lo

45、t of high frequency content such as guitars and cymbals but can also be used to remove unwanted sibilance from signals such as vocals. 18 Master Section GigRac 600Master Section GigRac 600Master Section GigRac 600Master Section GigRac 600Master Section GigRac 600 19 (8) Main Master Volume Control Th

46、is control determines the overall level that is sent to the internal amplification and to the Main Output socket.(19) (9) Mon (PHONES) Master Volume Control This control determines the overall level that is sent to the Monitor Output (Mon Output) and Phones socket. (10) Phantom 48V switch This switc

47、h turns the 48v phantom power On/Off for the 3 pin XLR sockets on channels 1-4. When the switch is turned On the red LED will illuminate. 48V phantom power is used to power condenser microphones and DI boxes. NB! To avoid possible damage to your loudspeakers, make sure that the Main and Monitor Master Volume controls are turned down fully before switching on the 48V phantom power. (11) Graphic Equaliser The Graphic Equaliser is divided into 7 frequency bands. Each frequency band can be used to either cut or b