User manual BEHRINGER MX9000

[. . . ] MX9000 User´s Manual Version 1. 1 July 2002 EURODESK ® www. behringer. com ENGLISH 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. This symbol, wherever it appears, alerts you to important operating and maintenance instructions in the accompanying literature. [. . . ] If youve got more than 5 or 6 stereo dynamics/EQ processors, you might spill over onto another dedicated bay, or alternatively have to find some suitable extra space somewhere else in the patchfield. Remember, most dynamics processors also have sidechain/KEY inputs, and therefore require 3 holes per channel. + 30 Enhancers are usually applied across INSERTS like compression and EQ etc. , but most BEHRINGER enhancers have a SOLO mode, in which they can be addressed via an aux send and blended back into the main mix like any other reverb. Fig. 8. 1: Example of patchbay configurations 31 Bay 8: L7 & R8 equals the L/R recording input to the 2-tracks. On Bay 8 we have hard-wired these to recording outputs 1 to 6 in order to drive all recorders simultaneously. Copying from any 2-track source to all recorders may be done by patching the source outputs into L7 and R8. We have assumed you have a HiFi amp available to enable a variety of secondary sources to be condensed into the XTRN (external) input for easy monitoring selection via the HiFi amps input selector switch, if you want to record from any of these sources, best patch direct from the individual outputs (17 to 22) rather than the HiFi amp mix (15 and 16) for the cleanest result. (The exception being vinyl, which will need to use the HiFi amps RIAA pre-amp to present the mixer with a flat response signal). Fig. 8. 2: Wiring for bay 8 (for advanced wiring scheme refer to section 11) 8. 3 Looming problems Loom wiring is an art in itself, and it is worth taking time out to get it right. First, it is important to avoid earth loops. (A looped wire acts as an arial, picking up electromagnetic radiation. ) Think of a tree: Every part of that tree is connected to every other part, but only by one route. Thats how the total earth picture for your entire studio should look. Dont take the earth off your power cable plug to reduce audible 50 Hz mains hum (or its harmonics). Rather you should be looking at disconnecting the signal screen somewhere. You could do worse than ensure that all screens are commoned at the patchbay in which case all unearthed equipment would pick up earth from this point via a single screen (more than 1 route = an earth loop), while mains-earthed equipment would have all screens cut at the equipment end. + Some quality equipment has an independent signal and mains earth. In this case, at least one and possibly all screens should carry earth to the equipment. Sometimes the only way to find out is suck and see. Take care to ensure that using the patchbay does not disturb the studios earth architecture. Always use short as possible patch leads with the screen connected at both ends. If youre really serious about hum levels, you could run balanced lines wherever appropriate. The earth wiring scheme would be the same as before. By shorting the ring to the barrel for all balanced jack sockets connected to unbalanced equipment, you could use balanced patch leads throughout. (There is no percentage in wiring a balanced output to a balanced input with a mono patch cord!) (See section 12 (UN)BALANCED LINES. ) Having designed mains hum out of the system, make up your cable looms from the patchbays outwards, and use cable ties, flexible sheaths, multicores etc. Its going to get very busy in there, and loose cables will inevitably mean lost signals. [. . . ] Damages/defects caused by the following conditions are not covered by this warranty: s misuse, neglect or failure to operate the unit in compliance with the instructions given in BEHRINGER user or service manuals. s connection or operation of the unit in any way that does not comply with the technical or safety regulations applicable in the country where the product is used. s damages/defects caused by force majeure or any other condition that is beyond the control of BEHRINGER. Any repair or opening of the unit carried out by unauthorized personnel (user included) will void the warranty. [. . . ]