Version 1.1 March 2001 EURORACK ® www.behringer.
EURORACK MX2004A SAFETY INSTRUCTIONS CAUTION: To reduce the risk of electrical shock, do not remove the cover (or back). No user serviceable parts inside; refer servicing to qualified personnel. WARNING: To reduce the risk of fire or electrical shock, do not expose this appliance to rain or moisture. This symbol, wherever it appears, alerts you to the presence of uninsulated dangerous voltage inside the enclosure—voltage that may be sufficient to constitute a risk of shock.
EURORACK MX2004A FOREWORD Dear Customer, Welcome to the team of EURORACK users and thank you very much for expressing your confidence in BEHRINGER products by purchasing this unit.
EURORACK MX2004A MX2004A Ultra low-noise 20-channel, 4-bus mixer s 4 stereo input channels with balanced TRS connectors s 2 additional multi-functional stereo aux returns s Pre and post-fader aux sends for external effects devices and monitoring s Master aux sends with gain control s Extremely high headroom—offering more dynamic range s Ultra low-noise discrete microphone preamps with +48 V phantom power s Balanced inputs and main outputs EURORACK s 8 mono input channels with gold-plated XLRs and phone
EURORACK MX2004A TABLE OF CONTENTS 1. INTRODUCTION..................................................................................................................... 7 1.1 Architecture .................................................................................................................................... 1.2 Before you begin ............................................................................................................................. 1.2.1 PSU (power supply unit) ..............
EURORACK MX2004A 7. TECHNICAL BACKGROUND .............................................................................................. 20 7.1 Mixing ........................................................................................................................................... 20 7.1.1 Equalization ........................................................................................................................ 20 7.1.2 Gain optimization ...................................................
EURORACK MX2004A 1. INTRODUCTION Congratulations. In purchasing our EURORACK you have acquired a mixer with incredible versatility and audio performance. Your EURORACK is built to the same outstanding quality as our top-of-the range console, the BEHRINGER EURODESK MX9000. Later we will see how adding the BEHRINGER ULTRALINK PRO MX882 to your system can inexpensively expand the capacity and flexibility of you mixing power even further.
EURORACK MX2004A 1.2 Before you begin 1.2.1 PSU (power supply unit) Any amplifier circuit is limited in its transient response by the available current. Every mixer has numerous line level operational amplifiers (op-amps) inside. When being driven hard, many desks begin to show signs of stress due to power supply limitations. Not so with the EURORACK MX2004A.
EURORACK MX2004A For level-setting (as opposed to localized listening) select the mono PFL bus rather than the post-fader (postchannel pan) stereo solo bus (CHANNEL MODE global switch up). PFL/solo never interrupts the mix at the main recording outputs. It follows that aux sends must also be unaffected, since they contribute directly to the main mix. In addition to switchable PFL/solo metering, a channel LED illuminates when a channel is going into overload.
EURORACK MX2004A 2.5 Insert Insert points are useful for adding dynamic processing or equalization to a channel or the mix. Unlike reverbs etc., which are usually added to the dry signal, dynamic processing is normally applied across an entire signal. Here an aux send would be inappropriate. Instead the signal is intercepted somewhere along the channel, fed through the dynamics processor and/or EQ, then returned to the console at the same point where it left. The insert point is normalized, i.e.
EURORACK MX2004A 4.2 Stereo aux returns There are two additional stereo line inputs (aux returns 1 and 2) on your MX2004A. Aux returns 1 is permanently assigned to the main mix. If you connect a jack to the left socket only, the aux return 1 operates in mono. Aux return 2 can be switched between the main mix and the cue feed (aux send 1) via a switch FX TO AUX 1 . This enables you to provide a wet (signal with effect i.e. reverb) cue mix for the headphones or foldback speakers.
EURORACK MX2004A 4.5 2-track input and output Input A 2-track input, on RCA connectors semi-professional audio equipment. / , provides easy connection to DAT and other professional or The 2-track input is primarily for auditioning mix playback from tape. The switch 2 TK the monitors and/or phones. routes this signal to However, it can also be routed to the main mix via the switch 2 TK TO MIX and will act as an additional input for tape playback, MIDI instruments etc.
EURORACK MX2004A 5. SETTING UP 5.1 Selecting inputs 1) + Mono channels accept microphone or line inputs. If you are using the microphone input, make sure nothing is connected to the line input (and vice-versa). The microphone inputs are more sensitive than the line inputs. Do not connect microphones with phantom power switched on. Never use unbalanced mic cables with the phantom power switched on ever! Shorting 48 V to earth can cause serious damage.
EURORACK MX2004A 5.5 Multitrack initialization Set up the multitrack so that any track in “record ready” condition has its input monitored when the tape is stationary. Place all tracks to be recorded into “record ready” status. (Once a recording has been made, these tracks should automatically switch to tape playback. Check that the input levels to each track are optimized before recording commences). 5.
EURORACK MX2004A Source MIDI Instrument #1 MIDI Instrument #2 MIDI Instrument #3 MIDI Instrument #4 MIDI Instrument #5 MIDI Instrument #6 MIDI Instrument #7 MIDI Instrument #8 MIDI Sampler #1 MIDI Sampler #2 MIDI Synth #1 MIDI Synth #2 Effect #1 Effect #2 Aux out 1 Aux out 2 Main Mix out L Main Mix out R Monitor out L Monitor out R Keyboard Mixer Mic/Line Mono/Stereo Line Mono Line Mono Line Mono Line Mono Line Mono Line Mono Line Mono Line Mono Line Stereo Line Stereo Line Stereo Line Stereo Stereo Stere
EURORACK MX2004A muddy FOH sound, as well as causing a reduction in feedback thresholds. Don’t forget to notch out troublesome frequencies using a graphic or parametric equalizer, or feedback destroyer (see the BEHRINGER ULTRA-CURVE PRO DSP8024 or the FEEDBACK DESTROYER PRO DSP1124P, which do all of these and more). Use the low-cut filters to eliminate floor rumble, mics popping etc. Switching logic for this setup is: and up, and down, down for channels 1 to 8 except 6. 6.
EURORACK MX2004A Fig. 6.1: Project studio setup example 6.4 Patchbay A patchbay allows to patch the audio signals of most components in your studio from a central point and send them to other units, which makes your entire cabling better structured and is indispensable for professional work. If you want to use your studio as effectively as possible then it is preferable to use a complete patchbay wiring scheme, but even less sophisticated patchbay solutions will benefit smaller studio configurations. 6.4.
EURORACK MX2004A 6.4.2 Parallel Fig. 6.2: Patchbay mode “parallel” In this mode, all terminals of one module are interconnected. This configuration doesn’t make sense at first glance but is used to split up and send one audio signal (e.g. aux send) to several destinations (e.g. effects devices). 6.4.3 Half-normalled Fig. 6.3: Patchbay mode “half-normalled” In this configuration, the contacts of the two jacks on the rear are interconnected.
EURORACK MX2004A and outputs are positioned on top of each other. Basically, the inputs are routed to the bottom and the outputs to the top rear-wall connectors. Avoid routing digital signals over a patchbay as the pulse signal used for the transmission of such signals causes heavy interference in analog signals. Additionally, normal patchbays change the impedance of the digital cable route, which causes interference in the digital path.
EURORACK MX2004A thus allows for recording both to the DAT recorder and the tape deck, simply by patching it accordingly. Modules 19 & 20 (tape deck) are open, because it does not make sense connecting the inputs and outputs of the tape deck. 21 & 22 are normalled and route the DAT recorder outputs to the 2-track inputs of the mixing console. So it always is possible to control the recorded data on the 2-track from the mixing console.
EURORACK MX2004A voices punch through a mix in a slightly unnatural but exciting way. In general corrective EQ usually involves broadband (slope) contouring, together with narrowband notching of unwanted resonances. The narrower the notch or “Q”, the less the total signal will be affected. Finding bad resonances is made easier by first frequency sweeping in BOOST mode. “Motown” EQ is achieved by applying boost in a fairly broadband way.
EURORACK MX2004A AC Power In. For connecting the mixer to the power supply unit (PSU). Always connect mixer and PSU before you connect the PSU to the mains supply. POWER switch. Once the PSU is connected to the mains supply, you may switch on your EURORACK. Allow one minute after powering up for the system to equilibrate before setting input gains. + PHANTOM switch. When using condenser microphones, +48 V DC can be switched globally on or off for all microphone channels.
EURORACK MX2004A Fig. 8.1: Different connector types 8.
EURORACK MX2004A 8.3 Modifications The following modifications require you to do some soldering. Attempt only if you are experienced in using an iron on PCBs. Otherwise, refer to qualified personnel. After modification the BEHRINGER warranty becomes discretionary. Links should not be threaded into holes on the PCB. They should be soldered to the tinned areas around the holes, and bowed slightly upwards in between. Mono channel aux send 2 > pre-fader Mono channel aux sends 2 are post-fader.
EURORACK MX2004A 9. SPECIFICATIONS Mono input channels Mic input Frequency response Distortion (THD & N) Mic E.I.N. (22 Hz - 22 kHz) Gain range Signal-to-noise ratio electronically balanced, discrete input configuration 10 Hz to 60 kHz, +/- 3 dB 0.007% @ +4 dBu, 1 kHz, bandwidth 80 kHz -129.5 dBu, 150 Ohm source -117.3 dBqp, 150 Ohm source -132.0 dBu, input shorted -122.
EURORACK MX2004A 10. WARRANTY § 1 WARRANTY CARD/ONLINE REGISTRATION To be protected by the extended warranty, the buyer must complete and return the enclosed warranty card within 14 days of the date of purchase to BEHRINGER Spezielle Studiotechnik GmbH, in accordance with the conditions stipulated in § 3. Failure to return the card in due time (date as per postmark) will void any extended warranty claims.
