Operation Manual

Transcript

Operation Manual Mixing Console (24ch/32ch/40ch) IMX-824/832/840 MIXING CONSOLE Contents Welcome Warning.........................................................................................................................................1 Unpacking ......................................................................................................................................2 Installation Environment....................................................................................................................................2 Important Safety Instructions.............................................................................................................2 Introduction .....................................................................................................................................3 Features............................................................................................................................................3 Mono Input Channel ......................................................................................................................4 Stereo Input Channel .....................................................................................................................8 Sub-Group/Aux Master ..............................................................................................................12 Mix Master/MTX Master.............................................................................................................15 EFX Return Input ...........................................................................................................................18 Monitor and Talk Back ................................................................................................................20 Cable and Connector Configurations........................................................................................23 VU-11 Meter Unit(Option)...........................................................................................................25 Applications ..................................................................................................................................26 Block Diagram ..............................................................................................................................27 Appendix .......................................................................................................................................28 Specifications ................................................................................................................................29 Service Procedures....................................................................................................................................32 Schematic .....................................................................................................................................32 Parts List .......................................................................................................................................32 Variations and Options ...............................................................................................................32 Warranty .......................................................................................................................................32 MIXING CONSOLE Welcome A personal welcome to you from the management and employees of Inter-M All of the co-workers here at Inter-M are dedicated to providing excellent products with inherently good value, and we are delighted you have purchased one of our products. We sincerely trust this product will provide years of satisfactory service, but if anything is not to your complete satisfaction, we will endeavor to make things right. Welcome to Inter-M, and thank you for becoming part of our worldwide extended family! CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK. DO NOT REMOVE COVER (OR BACK). This symbol is intended to alert the user to the presence of uninsulated “dangerous voltage” within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. This symbol is intended to alert the user to the presence of important operation and maintenance (servicing) instructions in the literature accompanying the appliance. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. WARNING To prevent fire or shock hazard, do not expose the unit to rain or moisture. Caution: To prevent electric shock do not use this (polarized) plug with an extension cord, receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure. Attentions: Pour prévenir les chocs électriques ne pas utiliser cette fiche polarisée avec un prolongateur, une prise de courant on une autre sortie de courant, sauf si les lames peuvent étre insérées à fond sans en laisser aucune partie à découvert. *Do not install this equipment in a confined space such as a book case or similar unit. *The apparatus shall not be exposed to dripping or splashing and no objects filled with liquids, such vases, shall be placed on the apparatus. *Worded: “WARNING FOR YOUR PROTECTION PLEASE READ THE FOLLOWING-WATER AND MOISTURE: Unit should not be used near water(e.g. near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc). Care should be taken so than objects do not fall and liquids are not spilled into the enclosure through openings.” IMX-824/832/840 1 MIXING CONSOLE Unpacking Please take a few minutes to read this manual to familiarize yourself with important information regarding product features, and operation. As with most electronic devices, ORIGINAL PACKAGING (OR EQUAL) IS REQUIRED in the unlikely event that the product needs to be returned for servicing. Installation Environment Never place this product in an environment which could alter its performance or reduce its service life. Such environments usually include high levels of heat, dust, moisture, and vibration. Important Safety Instructions 1. 2. 3. 4. 5. 6. 7. 8. Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. 9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. 10. Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus. 11. Only use attachments/accessories specified by the manufacturer. 12. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. 13. Unplug this apparatus during lightning storms or when unused for long periods of time. 14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped. S3125A S3125A 2 IMX-824/832/840 MIXING CONSOLE Introduction Thank you for choosing the IMX-800 SERIES professional mixing console. Your IMX-800 SERIES benefits from over 20 years of Inter-M’s professional audio design and manufacturing experience. This operation manual should quickly acquaint you with the console’s features and controls, while offering some suggestions for its use in various applications. Although we believe the information in this guide to be reliable, we do not assume responsibility for inaccuracies. We also reserve the right to make changes in the interest of further product development. Features - FLEXIBILITY OF CHOICE Three frame sizes accommodating 24, 32 or 40 Mono inputs channels. Optional VU meter-bridge. - FULL FUNCTION INPUT CHANNELS Mono channels are equipped with Individual 48-volt phantom power supply, 4-band equalizer with two swept mid frequencies, swept frequency high-pass filter, 8 Auxiliary sends with pre-fader signal switching, Direct output, Full LCR or LR+Mono routing system, 100mm high-quality fader, 4 MUTE-groups and 4 segment signal metering. - LCR PANNING All the Inputs and Sub-groups can be routed to Left, Right and Center/Mono bus providing ultimate control over sound stage positioning and construction. - 2 STEREO INPUT CHANNELS Full function Stereo Input Channels with 4-band EQ. - DUAL PURPOSE CONSOLE - “FADER FLIP” FUNCTION Audio Sub-group masters and AUX masters have a “FLIP” facility providing easy configuration for FOH and MONITOR application. - 4 MATRIX OUTPUTS 4 Matrix sends from all the Sub-groups and MIX L, C, R outputs. - MUTE GROUPS 4 MUTE Groups allows preset MUTE scenes. This advanced MUTE circuit gives silent muting. - 6 STEREO RETURNS Each Stereo Return has 3-band EQ, 2 AUX sends, full Sub-group assignment, 60mm high quality fader and solo system. - FULL TALK-BACK SYSTEM Talk-Back assignment to AUX, Groups, MIX outputs can be selected. Matrix outputs have Talk-Back enable switches. IMX-824/832/840 3 MIXING CONSOLE Mono Input Channel 1. FRONT PANEL 4 1. 48V PHANTOM POWER This provides +48V phantom power to XLR input. DO NOT use unbalanced sources with the phantom power switched on. The voltage on pins 2 & 3 of the XLR connector may cause serious damage. Please make sure the fader is at the position before switching phantom power on or off to avoid loud pops through the sound system loudspeakers (the “pop” sound may damage the loudspeaker system components). 5 2. -26dB PAD Reduces input level at both the jack and XLR sockets by 26dB. This control helps prevent high-level source signals from overloading the input preamplifier circuit. 6 3. GAIN The input signal’s gain is continuously variable from +16dB to +60dB (-10dB to +34dB with the pad enabled). The actual value of the gain required will depend upon the source and should ideally be set such that peaks in level on the input should not cause the input amplifier to overload. If the peak level indicator LED located near the channel fader flashes frequently (or is constantly illuminated), the gain is set too high. An optimal setting for the gain control is indicated by the +12 indicator LED flashing occasionally with normal program material. 1 2 3 4. POLARITY REVERSE Reverses input signal’s phase, or more accurately, polarity. This function is commonly needed where two microphones are used facing each other (for example when using a microphone on both the top and bottom of a snare drum). There are no hard and fast rules on this, but give it a whirl and let your ears decide. 5. HPF The 12dB/octave High-Pass Filter is a useful tool in combating undesirable low frequency content, such as microphone handling noise, wind noise, or bass build-up on stage. The FREQ control varies the cut-off frequency from 20-400Hz. The IN switch inserts the HPF into the signal path. 6. EQUALIZER Mixer’s equalizer is a 4-band Baxandall type. LF and HF bands are shelving response, with fixed frequencies of 80Hz and 12kHz respectively. Its two bell-response MID bands are semi-parametric, meaning that the center frequency of the curve can be varied. The IN switch inserts all four bands into the signal path, which is useful when checking the effectiveness of your EQ settings 4 IMX-824/832/840 MIXING CONSOLE 7. AUXILIARY Your IMX-800 SERIES has 8 auxiliary sends. These are commonly used for effects, stage monitors and any additional sends, e.g. camera sound. Each control varies the amount of signal sent to the related Auxiliary bus from to +6dB. Ordinarily, auxiliaries are fed post fader, meaning that the channel’s fader level will affect the level sent to the auxiliary. PRE switches in the auxiliary section change the signal source to pre fader. These are grouped to allow maximum flexibility. 7 8. BLEND Adjusts level balance between MIX L/R buses and MIX C bus. This does not affect GROUP buses. At the L/R (fully anticlockwise) position, the stereo image is made up using only the L and R buses. By turning BLEND control clockwise, the C bus is introduced. At the C (fully clockwise) position, signals panned centrally will only appear on C output. This is shown in the diagram below. 8 9 9. PAN Controls the signal’s position in the stereo image. This affects both main MIX outputs as well as any groups to which the channel is routed. Panning left sends the signal to odd numbered groups only, and panning right sends it to even numbered groups only. If, for example, you are panning from hard left to center, you will notice a 3dB drop in the left channel as you do so. This “panning law” ensures that signals sound equally loud at all pan positions. IMX-824/832/840 5 MIXING CONSOLE 10 11 12 10. MUTE This removes the channel’s signal from all MIX, group and auxiliary buses, although audio will continue to pass through any attached insert devices. If it is preferable for pre-fader auxiliary sends to be unaffected by a channel’s mute status, this can be achieved by changing an internal jumper setting. If the button is not engaged, but it is half-bright illuminated, this means that MUTE GRP, which described below, is active. 11. CHANNEL LEVEL Displays the channel’s pre-fader signal level. The “SIG” lamp indicates the presence of signal at around 12dB below nominal level. The “PK” lamp warns of signal levels approaching the upper headroom limit, which means about 3dB to the clip point. We recommend that you reduce the input gain to avoid unpleasant distortion! 15 13 14 12. BUS ROUTING SWITCHES Connects the channel signal to each Sub-GROUP and MIX buses. After-fader signal is fed via PANPOT section. GROUP 1-2, 3-4, 5-6, 7-8 behaves as stereo path by panning. ODD numbers are left, and EVEN are right. GROUP 1-2, 3-4, 5-6, 7-8 are standard L/R(STEREO) mixes that may be panned L to R. The “LCR” switch sends the signal to the MIX L, R, and C busses. The “MONO” switch sends the signal only to the MONO/C bus. When the “MONO” switch is selected, the MONO/C signal is not affected by the PAN or BLEND controls. 13. MUTE GRP These switches assign the channel to any combination of four mute groups. When a mute group master is activated, all channels assigned to that group will be automatically muted, and the MUTE switch will turn on at half bright. 14. SOLO Routes the signal to the solo bus for isolated auditioning and detailed metering. 15. CHANNEL FADER A professional 100mm fader gives you smooth, high-resolution control over the channel level. 6 IMX-824/832/840 MIXING CONSOLE 2. REAR PANEL 1 1. DIRECT OUT As standard, the direct out jack socket carries the channel’s post-fader signal at a nominal level of 0dBu. It is possible to feed this output from several points in the signal chain: PreEQ, Pre-Fader, Pre-Insertion and Post-Fader, by altering internal jumper settings. 2 2. INSERT 1/4” TRS jack for inserting external audio devices into the signal chain. The send is post-filter, pre-EQ. The tip is wired to a ground compensated send, unbalanced return is via the ring and sleeve. Nominal I/O level is 0dBu. 3 4 3. HI-Z INPUT Use this input when connecting sources such as instruments, keyboards or playback devices. This balanced input signal is summed with the XLR input, but you needn’t worry about phantom power; that will only be supplied from the XLR. Available input level is about 26dB higher than the XLR input, and impedance of this input is approximately 30k ohms. If using an unbalanced source, please make sure to link Sleeve and Ring together to avoid unwanted noise. 4. MIC INPUT Microphone inputs are on Female XLR. The impedance of this input is approximately 2k ohms. IMX-824/832/840 7 MIXING CONSOLE Stereo Input Channel 1. FRONT PANEL 1. GAIN Gain is variable from -10dB to +20dB. 2. R POLARITY INVERT Reverses phase or, more accurately, polarity of the right channel only. 1 2 3 4 8 IMX-824/832/840 3. L+R Sums left and right inputs together to make a mono signal. 4. EQUALIZER Here is a four-band traditional Baxandall equalizer. LF and HF filters have a shelving response at 80Hz and 12kHz respectively. High Mid and Low Mid bands have a bell response centered around 3.15kHz and 315Hz respectively. The IN switch inserts all four bands into the signal path, which is useful when checking the effectiveness of your EQ settings. MIXING CONSOLE 5. AUXILIARY Your IMX-800 SERIES has 8 auxiliary sends. These are commonly used for effects, stage monitors and any additional sends, e.g. camera sound. Each control varies the amount of signal sent to the related Auxiliary bus from to +6dB. Ordinarily, auxiliaries are fed post fader, meaning that the channel’s fader level will affect the level sent to the auxiliary. PRE switches in the auxiliary section change the signal source to pre fader. These are grouped to allow maximum flexibility. 5 6. BLEND Adjusts level balance between MIX L/R buses and MIX C bus. This does not affect GROUP buses. At the L/R (fully anticlockwise) position, the stereo image is made up using only the L and R buses. By turning BLEND control clockwise, the C bus is introduced. At the C (fully clockwise) position, signals panned centrally will only appear on C output. This is shown in the diagram below. 6 7 7. PAN Controls the signal’s position, or balance, in the stereo image. This affects both main MIX outputs as well as any groups to which the channel is routed. For example, with the balance control set to hard left, only the left signal will be sent to odd numbered buses. Similarly, with the balance control set to hard right only the right signal will be sent to even numbered buses. If, for example, you are panning from hard left to center, you will notice a 3dB drop in the left channel as you do so. This “panning law” ensures that signals sound equally loud at all pan positions. IMX-824/832/840 9 MIXING CONSOLE 8 9 10 13 11 12 8. MUTE This removes the channel’s signal from all MIX, group and auxiliary buses, although audio will continue to pass through any attached insert devices. If it is preferable for pre-fader auxiliary sends to be unaffected by a channel’s mute status, this can be achieved by changing an internal jumper setting. If the button is not engaged, but it is half-bright illuminated, this means that MUTE GRP, which described below, is active. 9. CHANNEL LEVEL Displays the channel’s pre-fader signal level. The “SIG” lamp indicates the presence of signal at around 12dB below nominal level. The “PK” lamp warns of signal levels approaching the upper headroom limit, which means about 3dB to the clip point. We recommend that you reduce the input gain to avoid unpleasant distortion! 10. BUS ROUTING Connects the channel signal to each Sub-GROUP and MIX buses. After-fader signal is fed via PANPOT section. GROUP 1-2, 3-4, 5-6, 7-8 behaves as stereo path by panning. ODD numbers are left, and EVEN are right. GROUP 1-2, 3-4, 5-6, 7-8 are standard L/R (STEREO) mixes that may be panned L to R. The “LCR” switch sends the signal to the MIX L, R, and C busses. The “MONO” switch sends the signal only to the MONO/C bus. When the “MONO” switch is selected, the MONO/C signal is not affected by the PAN or BLEND controls. 11. MUTE GRP These switches assign the channel to any combination of four mute groups. When a mute group master is activated, all channels assigned to that group will be automatically muted, and the MUTE switch will turn on at half bright. 12. SOLO Routes the signal to the solo bus for isolated auditioning and detailed metering. 13. CHANNEL FADER A professional 100mm fader gives you smooth, high resolution control over the channel level. 10 IMX-824/832/840 MIXING CONSOLE 2. REAR PANEL 1 1. SIGNAL INPUTS The XLR-type and TRS stereo inputs are intended for line-level signals. The TRS jacks may be used with signals that are 6dB higher in level than the signal inputs to the XLR connectors. The XLR and TRS connectors for each channel are summed together prior to the input preamplifier. The nominal input impedance of the both XLR and TRS inputs are 10k. IMX-824/832/840 11 MIXING CONSOLE Sub-Group/AUX Master 1. FRONT PANEL 1 2 3 4 5 6 1. MTX1 - MTX4 SENDS Sub group signals can be routed to the console’s 4 Matrix outputs in much the same way as a channel feeds an auxiliary output. The send source can be made pre-fader by pressing the PRE switch. In pre-fader mode, matrix sends are unaffected by the group output’s MUTE. 2. BLEND Adjusts level balance between MIX L/R buses and MIX C bus. At the L/R (fully anti-clockwise) position, the stereo image is made up using only the L and R buses. By turning blend control clockwise, the C bus is introduced. At the C (fully clockwise) position, signals panned centrally will only appear on the C output. 3. PAN Controls the signal’s position in the stereo image. If, for example, you are panning from hard left to center, you will notice a 3dB drop in the left channel as you do so. This “panning law” ensures that signals sound equally loud at all pan positions. 4. MUTE SWITCH Cuts post fader signal. This does not affect pre-fader matrix sends. 5. BUS ROUTING Groups can be routed to the main MIX outputs. “LCR” switch connects signal to MIX L, R and C bus. “MONO” switch connects signal to MIX C bus directly. The “C” or “MONO” signal by pressing “MONO” switch is not affected by PAN and BLEND control. 6. SUB-GROUP FADER A professional 100mm fader gives you smooth, high resolution control over the sub-group level. 7 12 IMX-824/832/840 7. AFL Connects the sub-group’s Post-Fader signal to mono AFL bus. You can monitor the signal on your phones and the AFL BAR METER. MIXING CONSOLE 8. 16-SEGMENT LED METER This 16-segment peak response level meter shows Subgroup or Auxiliary output level. The signal displayed is selected with the METER SELECT switch in the monitor section. 8 9. AUXILIARY MASTER - MASTER LEVEL The AUX signal level sent from each channel is controlled by this potentiometer, which has +10dB gain at the fullyclockwise position, and unity at 0 position. - AFL Connects the AUX output signal to monaural AFL bus. - GRP/AUX FLIP Reverses output of Sub-group and Auxiliary together. The signal sent from the channel to GRP1, for example, is routed to AUX1 output via the AUX1 master. The AUX1 signal from the channel is routed to GRP1 via INSERTION and the associated fader. 9 Your IMX-800 SERIES console has been designed with maximum flexibility in mind. It is equally adept to working in both Front of House and monitor mixing situations. For FOH mixing, it is often desirable to arrange channels using subgroups, to simplify mixing. On the other hand, monitor engineers prefer to have more control over Auxiliary outputs. To meet the needs of both scenarios, the IMX-800 SERIES allows either the Aux or Group outputs to use the long-throw faders and inserts. This is done for each output using the FLIP control. Please take care when using this control, as the physical output and insert sockets are also affected by your selection. See above for more details. IMX-824/832/840 13 MIXING CONSOLE 2. REAR PANEL 1 14 IMX-824/832/840 1. AUX / GRP AND GRP / AUX OUTPUTS The Auxiliary and Group outputs are arranged into two interchangeable signal paths. In normal operation, the top XLR connector is the output for the Auxiliary bus, while the lower XLR and INSERT jack are for the Group signal. When the front panel “FLIP” switch is activated, the signals to the connectors are swapped. MIXING CONSOLE Mix Master/MTX Master 1. FRONT PANEL 1 1. MATRIX SENDS MIX bus signals can be routed to the console’s 4 Matrix outputs in much the same way as a channel feeds an auxiliary output. The send source can be made pre-fader by pressing the PRE switch. In pre-fader mode, matrix sends are unaffected by the MIX output’s MUTE. 2. MUTE Mutes the After-fader signal of the channel path. Pre-fader signal, which provided to Matrix-PRE path is NOT affected by this switch. 3. MASTER FADER A 100mm stroke fader adjusts the channel signal to +10dB. level continuously from 2 3 IMX-824/832/840 15 MIXING CONSOLE 4. 16-SEGMENT LED METER This 16-segment peak response level meter shows the monitor source output level. The MIX C meter also shows AFL and PFL levels when a SOLO or AFL button is activated. 4 5 16 IMX-824/832/840 5. MATRIX MASTER - MASTER LEVEL: The Matrix master level ranges from +10dB. - AFL: Connects the MTX output to monaural AFL bus - TB: Connects talk-back signal to MTX output. to MIXING CONSOLE 2. REAR PANEL 1 2 3 1. MATRIX OUTPUT Male XLR type balanced connectors for MATRIX outputs. Nominal output level is 0dBu. 2. MIX INSERT Each MIX output has a 1/4” TRS type insert point. The tip is wired to a ground compensated send, unbalanced return is via the ring and sleeve. Nominal I/O level is 0dBu. 3. MIX OUTPUTS MIX L, R and C outputs are on male XLR connectors. IMX-824/832/840 17 MIXING CONSOLE EFX Return Input Six stereo return inputs are available for the connection of stereo devices, such as reverb processors, which do not need extensive processing, or access to the full range of auxiliaries. These inputs are, however, equipped with basic EQ and each return has access to two auxiliary sends. Returns 1-4 act feed Auxes 1&2 pre-fader, which can be used to send reverb or other effects to stage monitors. Returns 5-6 can send post-fader to Auxes 7&8. This can be useful when the console is being used for monitor purposes or for chaining effects processors together. 1. FRONT PANEL 1 6 2 3 7 1. LEVEL +4 / -10 Selects nominal input level between -10dBv (consumer and semi-pro equipment) and +4dBu (professional equipment). 2. R POLARITY INVERT Reverses phase or, more accurately, polarity of the right channel only. 3. L+R Sums left and right signals together to make a mono signal. 4 8 5 9 4. EQ HIGH and LOW shelving filters operate at 12kHz and 80Hz respectively. The bell response MID band centers on 2.5kHz. 5. AUX SENDS Returns 1-4 can be sent to Aux buses and 2, while returns 5 and 6 can send to Auxes 7 and 8. One useful application of this is sending reverb to In Ear Monitors. 6. MUTE Mutes the channel signal from all outputs. This does not include pre-fader Aux Sends. 7. LEVEL METER Displays pre-fader signal level. The lower SIG lamp starts to light green about 12dB below nominal level, and gains its brightness as to increase signal level. The PK lamp warns of signal levels approaching the upper headroom limit, which means about 3dB to the clip point. We recommend that you reduce the source’s output level to avoid nasty clipping! 8. BUS ROUTING Connects the channel signal to each of the GROUP and MIX buses. 18 IMX-824/832/840 MIXING CONSOLE 9. SOLO Connects the channel signal to SOLO bus. The master PFL/AFL selection will determine how the signal is monitored when SOLO is pressed. 2. REAR PANEL 1 1. L / R INPUT A pair of 1/4” TRS jack sockets allow balanced input. Nominal input level can be selected by a level switch on the RETURN section as -10dBv or +4dBu. Input impedance is about 10k ohms. IMX-824/832/840 19 MIXING CONSOLE Monitor and Talk Back 1. FRONT PANEL 1 2 1. LAMP DIMMER Controls brightness of Littlite lamps. Provided voltage is continuously variable from 1.5V to 12V. 2. TALK BACK MIC A Talkback Mic can be connected via this front panel XLR. Phantom power is provided by 48V switch. 3. TB LEVEL Controls talk-back microphone gain from +22dB to +60dB. 4. METER SELECT Toggles what is shown on GROUP/AUX meters. 3 4 5. OSCILLATOR - OSC/PINK: Toggles the tone generator’s output between oscillator and pink noise. - FREQ: Sweeps tone generator frequency continuously from about 50Hz to 9kHz. - ON: Activates the tone generator. - OSC LEVEL: Controls tone or noise level continuously. 6. DESTINATION Selects destination for both the tone generator and the talkback circuit. 5 7. TALK BACK This sends the talkback mic signal to the outputs selected in the above routing section. This switch is a PTT (push-to-talk) momentary pushbutton. 6 7 20 IMX-824/832/840 MIXING CONSOLE 8 9 10 11 12 8. SOLO MODE Indicates the type of SOLO currently active. The “INPUT” lights when SOLO switches are pressed on any input channel, including Returns. The “OUTPUT” LED lights when AFL switches are pressed on any Groups, Mix, AUX or MTX masters. The INPUT SOLO MODE switch always has priority over the OUTPUT SOLO MODE switch for signals going to the solo bus. 9. SOLO LEVEL Adjusts solo bus level for monitoring purposes ±15dB from its center position. 10. AFL / PFL Toggles INPUT solo function between pre-fade (PFL) and postfader (AFL). 11. MONITOR LEVEL Controls monitor output level. 13 14 15 12. MONO SUM Sums left signal and right monitor signal together to make it monaural. 13. PHONES LEVEL Gives independent control over headphone volume. 14. MONITOR SOURCE SELECT Selects monitor feed from internal or external sources. MIX L-R and C/MONO buses can be used individually or summed together. Alternatively, an external tape source can be selected which overrides the internal sources. This corresponds to the “PLAYBACK” RCA sockets on the rear panel. 15. MUTE GROUP These switches mute all channels that are assigned to the corresponding mute group. Affected channels are identified by half-bright lighting of MUTE button. HEADPHONES OUTPUT JACK 1/4” TRS STEREO JACK. These jacks (tip=left, ring=right, sleeve=GND) may be connected to external power amplifiers for headphone distribution, or you can plug your headphones directly into the jack. Use only stereo phones! When a mono connector is plugged into the stereo connector, it connects both sides of the headphone amplifier to a single load. (1/4" Phone 3-conductor Connector) (1/4" Phone 2-conductor Connector) IMX-824/832/840 21 MIXING CONSOLE 2. REAR PANEL 1 2 3 1. MONITOR Standard male XLR connectors. The signal is unbalanced, with pin 2 hot, pin 3 ground and pin 1 to chassis. Nominal level is 0dBu. 2. PLAY BACK Standard RCA sockets for stereo consumer audio equipment. This input can only route to the monitor section. This can be used to monitor the recording of a performance without the danger of creating feedback. Nominal input level is -10dBv. 3. RECORD Standard RCA sockets for stereo consumer audio equipment. This signal is a 2-channel mix of the MIX L/C/R outputs. 22 IMX-824/832/840 MIXING CONSOLE Cable and Connector Configurations The mic input accepts XLR-type connectors and is designed to accommodate a wide range of balanced low-level signals, whether from delicate vocals requiring the best low-noise performance or close-miked drum kits needing maximum headroom. White(Red)/HIGH Black/LOW 2 2 3 3 Shield/GND (XLR) 1 1 Balanced signals coming from outboard equipment also may be used with this XLR-type connector. Please make sure that HIGH signal (Tip = T) is connected to pin-2, LOW signal (Ring = R) is pin-3 and ground (Sleeve = S) is pin-1. The correct configuration of these connections will give you proper signal polarity and will minimize hum and noise. White(Red)/HIGH Black/LOW 2 T R S 3 Shield/GND 1 (XLR) An unbalanced source only has “high” (hot) and ground. Any balanced input to the Mixer always uses pin 2 and pin 3 (XLR) or tip and ring (TRS) for signal connections. When you want to use unbalanced equipment with the mixer, connect Sleeve (= ground) to both pin-3 and pin-1. White(Red)/HIGH Black/LOW 2 T S 3 Shield/GND (XLR) 1 DO NOT use unbalanced sources with the phantom power switched on. The voltage on pins 2 & 3 of the XLR connector may cause serious damage. IMX-824/832/840 23 MIXING CONSOLE The unbalanced insert point is a “break” in the signal path to permit the insertion of external signal-processing devices, such as compressor/limiters or graphic equalizers. When a TRS jack is inserted, the signal path is interrupted before the fader: the output signal leaves the console on the TIP of the TRS plug and returns on the RING. A special cable (custom-made for use as an insertion cable) is required for interconnection with external equipment, with separate send/return 2-conductor (unbalanced) plugs (as shown below): Signal Send Insert Point Screen 24 IMX-824/832/840 Signal Return Send to External Device Return from External Device MIXING CONSOLE VU-11 Meter Unit (Option) GRP 2 GRP 1 20 15 10 7 5 VU 3 0 3 20 15 10 7 5 VU 3 GRP 3 0 3 20 15 10 7 5 VU 3 GRP 5 GRP 4 0 3 20 15 10 7 5 VU 3 0 3 20 15 10 7 5 VU 3 GRP 6 0 3 20 15 10 7 5 VU 3 GRP 7 0 3 20 15 10 7 5 VU 3 GRP 8 0 3 20 15 10 7 5 VU 3 MIX L 0 3 20 15 10 7 5 VU MIX R 3 0 3 20 15 10 7 5 VU 3 C/MONO 0 3 20 15 10 7 5 3 0 3 VU The VU-11 is an optional analog VU meter assembly to be used with the IMX-800 SERIES. You may monitor the output signal levels of the eight sub-groups and the MIX L/R/C. Only use the special cable (supplied with the VU-11 assembly) to connect the VU-11 meter bridge to the console. Do not connect or disconnect the VU-11 interface cable from the console when the console is operational. Always switch off the RS-3800 power supply, or there may be loud ‘pops’ on the subgroup and MIX L/R/C outputs! - Mounting the VU-11 meter assembly to the Mixer Mounting the VU-11 meter assembly to the Mixer should read. Please note there are three areas where there are pairs of screws (six screws total) on the rear panel. Remove these screws before attempting to mount the VU-11 assembly. After you have placed the VU-11 assembly in the proper location, use the six screws to firmly attach the VU-11 assembly to the Mixer. - Meter Adjustments The VU meters are set at the factory to indicate “0 VU” for an output signal level of +4dBu. To change these settings, use a small screwdriver to turn the potentiometer controls that adjust the signal level to the VU meters. On the rear panel of the VU-11 there are 11 small holes (one for each meter) in the metal surface of the meter housing. Insert the screwdriver in the hole and adjust the control as necessary to attain the desired indication on the associated VU meter. There also is a mechanical adjustment for the meter needle position. Gently use a screwdriver to adjust the meter needle position control (this looks like a screw head on the lower front face of the meter) to attain mechanical “zero”. IMX-824/832/840 25 MIXING CONSOLE Applications Keyboard or other line level input IN OUT Reverb 1 Keyboard or other line level input IN Reverb 2 Any Line Level Input OUT ON ON Vocal Microphones OUT D.I. BOX IN DAT or Cassette Deck IN OUT IN GEQ-1231D/2231D(Graphic Equalizer) GEQ-1231D/2231D(Graphic Equalizer) OUT IN R-150PLUS/300PLUS/500PLUS (Amplifier) OUT Stereo Compressor L-800/1400/1800/2400/3000 (Amplifier) Main Speaker 26 IMX-824/832/840 Stage Monitors RS-3800 (POWER SUPPLY) Stage Monitors MIXING CONSOLE Block Diagram IMX-824/832/840 27 MIXING CONSOLE Appendix a) Signal source for DIRECT OUT on mono channels The internal signal source (as shipped from the factory) for the DIRECT OUT on each mono channel is “Post-Fader.” By selecting appropriate internal jumper settings the configuration may be changed in the field to accommodate the special needs of the user. Alternate jumper settings for the internal signal source for the DIRECT OUT are “Pre-Fader Pre-EQ” and “Pre-Fader Post-EQ.” AUX Pre SIGNAL J5 J6 Post EQ Pre EQ J2 J3 J1 Pre EQ B) Changing signal flow via jumper settings You may modify the standard signal flow in certain areas of the console based on user preferences. Post EQ If the bulbs need to be replaced use only the following approved types as designated below: Type 1815 2.4W/12V standard bulb (rated life of 1000 hours) Type Q5 5W/12V 3800mA halogen bulb (rated life of 240 hours) AUX Pre Please visit the Littlite® website for more information at: http://www.littlite.com DIRECT OUT SIGNAL Post FDR J4 A) LAMPS The lamp connector is a 4-Pin XLR-type connector (only pin 3 and pin 4 of the connector are used). The total current available from each connector is 500mA (6W/12V). J8 Yes J7 No AUX Pre MUTE d) Stereo Input AUX-Pre MUTE Aux pre signal is normally muted by pressing the MUTE switch. If you don’t wish to mute the signal, change the jumper from “YES MUTE” to “NO MUTE”. b) Signal source for AUX SEND PRE switch on mono channels As shipped from the factory, on each mono channel the signal source for the AUX SEND PRE switch is set “Pre-Fader Post-EQ.” By changing a jumper, this may be changed to “Pre-Fader Pre-EQ.” c) Muting of AUX SEND PRE on mono channels As shipped from the factory, the AUX SEND PRE signal is muted when the channel MUTE switch is activated. This may be changed so the AUX SEND PRE signal is not muted when the channel MUTE switch is activated by changing the position of an internal jumper from the standard setting of “YES MUTE” to the user preference of “NO MUTE.” J8 Yes J7 No AUX Pre MUTE 28 IMX-824/832/840 MIXING CONSOLE Specifications ......................................................*0dBu=0.775V, 0dBV=1V IMX-824 MIC INPUT Input Impedance Nominal Level Hi-Z INPUT Input Impedance Nominal level STEREO INPUT(1) Input Impedance Nominal level STEREO INPUT(2) Input Impedance Nominal level RETURN INPUT Input Impedance Nominal level PB INPUT Input Impedance Nominal level INSERTION RETURN Input Impedance Nominal level TB MIC INPUT Input Impedance Nominal level MIX OUTPUT Output Impedance Minimum load Nominal level GROUP OUTPUT Output Impedance Minimum load Nominal level AUX OUTPUT Output Impedance Minimum load Nominal level IMX-832 IMX-840 XLR 3 type female Electronically Balanced >2kΩ -60dBu to +10dBu(+30dBu Max.) TRS Jack socket Electronically Balanced >30kΩ -34dBu to +36dBu XLR3 type female Electronically Balanced >10kΩ -20dBu to +10dBu(+30dBu Max.) TRS Jack socket Electronically Balanced >10kΩ -14dBu to +16dBu TRS Jack socket Electronically Balanced >10kΩ -10dBv/+4dBu(+10dBv/+24dBu Max.) RCA pin type Unbalanced >15kΩ -10dBv TRS Jack socket Electronically Unbalanced >15kΩ 0dBu(+20dBu Max.) XLR3 type female Electronically Balanced >3kΩ -60dBu to -22dBu XLR3 type male Electronically Balanced <150Ω >600Ω 0dBu(+22dBu Max.) XLR3 type male Electronically Balanced <150Ω >600Ω 0dBu(+22dBu Max.) XLR3 type male Electronically Balanced <150Ω >600Ω 0dBu(+22dBu Max.) IMX-824/832/840 29 MIXING CONSOLE IMX-824 MONITOR OUTPUT Output Impedance Minimum load Nominal level INSERTION SEND Output Impedance Minimum load Nominal level DIRECT OUTPUT Output Impedance Minimum load Nominal level REC OUTPUT Output Impedance Minimum load Nominal level PHONES OUTPUT Minimum load Maximum power LAMP Output Voltage Operation Temperature Humidity Power Source Power Consumption Weight Shipping Weight Dimensions Frequency Response Noise Level Residual noise Ein C.M.R.R. Distortion Cross Talk IMX-832 IMX-840 XLR3 type male Unbalanced <150Ω >2kΩ 0dBu(+18dBu Max.) TRS Jack socket Unbalanced <150Ω >2kΩ 0dBu TRS Jack socket Unbalanced <150Ω >2kΩ 0dBu RCA pin type Electronically Unbalanced <150Ω >2kΩ -10dBv TRS Jack socket Unbalanced >35Ω 100mW / 35Ω XLR 4 type female(pin3=V+, pin4=V-) 1.5V to 12V (between pin 3 and 4) -10°C~+35°C 0 to 90% @35°C DC ±18V/+48V 300W(40ch, no signal) 62.7kg/138.22lb 75.3kg/166.00lb 88.5kg/195.10lb 99kg/218.25lb 116kg/255.73lb 134kg/295.41lb 1300(W)x220(H)x730(D)mm/ 1550(W)x220(H)x730(D)mm/ 1800(W)x220(H)x730(D)mm/ 51.1(W)x8.7(H)x28.7(D)in 61.0(W)x8.7(H)x28.7(D)in 70.9(W)x8.7(H)x28.7(D)in +0dB/-1dB(20Hz to 20kHz MIC to Mix O/P at +60dB input gain) <-90dB(Mix O/P with no signal assignment, 20Hz to 22kHz) <-127dBu(MIC to Mix +60dB input gain with 150 ohms termination,20Hz to 22kHz) > 80dB(@1kHz +40dB input gain) > 60dB(@20kHz +40dB input gain) <0.05%(20Hz to 20kHz, MIC to MIX O/P +16dB input gain at +20dBu output) Fader Attenuation Mute Attenuation * Specifications and design subject to change without notice. 30 IMX-824/832/840 <-90dB @1kHz <-90dB @1kHz MIXING CONSOLE DIMENSIONS 1799 43 43 307 1532 226 802 792 1265 97 IMX-824/832/840 31 MIXING CONSOLE Service Procedures Take steps to insure the problem is not related to operator error or other products within the system. Information provided in the troubleshooting portion of this manual may help with this process. Once it is certain that the problem is related to the product contact your warranty provider as described in the warranty section of this manual. Schematic A Schematic is available by contacting your warranty provider. Parts List A Parts List is available by contacting your warranty provider. Variations and Options Variations Products supplied through legitimate sources are compatible with local AC power requirements. Options Optional items available for this product are the VU-11 Meter Bridge and RS-3800 Power Supply (for redundant operation). Warranty Warranty terms and conditions vary by country and may not be the same for all products. Terms and conditions of warranty for a given product may be determined first by locating the appropriate country which the product was purchased in, then by locating the product type. To obtain specific warranty information and available service locations contact Inter-M directly or the authorized Inter-M Distributor for your specific country or region. 32 IMX-824/832/840 Inter-M, Ltd. (Korea) began operations in 1983. Since then, Inter-M has grown to become one of the largest manufacturers of professional audio and commercial sound electronics equipment in the world. Inter-M has gained worldwide recognition for its own branded products, as well as private label manufacturing of electronics sold under other names (OEM). The company is no longer just a Korean company, but rather a global company that is truly international in scope, with factories and offices in Korea and China, and sales and marketing operations located in Japan, Europe, and the U.S.A. With more than 850 employees around the globe, Inter-M is well-poised for further growth and expansion. INTER-M AMERICAS, INC. 1 EAST BEACON LIGHT LANE CHESTER, PA USA 19013-4409 TEL : 1-610-874-8870, FAX : 1-610-874-8890 Home Page : http://www.inter-m.net, E-mail : [email protected] INTER-M Corporation SEOUL OFFICE:653-5 BANGHAK-DONG, DOBONG-KU, SEOUL, KOREA TEL : 82-2-2289-8140~8, FAX : 82-2-2289-8149 Home Page : http://www.inter-m.com, E-mail : [email protected] MADE IN KOREA July 2006 9007301821