User manual BEHRINGER GEQ3102

[. . . ] ULTRA-GRAPH PRO GEQ3102 Users Manual Version 1. 1 July 2000 ® www. behringer. com ENGLISH ULTRA-GRAPH PRO GEQ3102 SAFETY INSTRUCTIONS CAUTION: To reduce the risk of electric 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 electric 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. [. . . ] For example, intelligibility is more important in speech applications: here, you should apply a slight roll-off in the bass range, because below the frequency range of voices there are no wanted frequencies but only interference (rumble, etc. ). In general, extremely low and high frequencies are transmitted with much lower amplitudes. There is no sense in forcing a small full-range speaker to reproduce frequencies below 50 Hz; apart from a need for higher power reserves, speaker damage will be the most likely result. + You should always take the physical limits of your system into account, no matter which settings you choose. Once the system has been adjusted as precisely as possible to produce the desired response curve, you should walk around the room to get an impression of the sound produced in various places. Remember to make regular breaks during these listening tests and to play back various music and speech programs, so that you get a feel for the response characteristics of your system and of the room. 2. APPLICATIONS 9 ULTRA-GRAPH PRO GEQ3102 + Good equalizer settings require time and patience!If you need to use extreme EQ settings to achieve an acceptable frequency response, the reason might be some serious misalignment of sound reinforcement system or room acoustics. Equalizers cannot make up for poor audio systems, but they are extremely useful and efficient tools for making musical fine-adjustments, as this often produces astounding improvements in terms of acoustic power and overall sound quality. 2. 2 Equalizer in the monitor path To use the ULTRA-GRAPH PRO in the monitor path, you should basically follow the same procedure as described in section 2. 1. On stage, you should keep volume levels as low as possible, because: 1. make it easier to create a well-balanced FOH sound. Often, the volume of the monitors is raised during concerts. Use concert pauses to reduce the levels of all monitor paths by about 3 dB. The musicians on stage will hardly notice this reduction (or even not at all), because their hearing, too, can relax a bit during the break. This method will give you valuable headroom. Extremely low frequencies are usually faded out completely, to avoid a stage sound that lacks transparency due to low frequency feedback. Apply the low cut filter until extremely low-end feedback frequencies are eliminated and the overall transparency of the monitors is improved. Fig. 2. 2: Several ULTRA-GRAPH PROs as part of a monitor system This illustration gives you an example of how to use several ULTRA-GRAPH PROs in an 8-way monitor system. 2. 2. 1 Tuning in of a monitor system Tuning in describes the process of detecting and suppressing feedback frequencies. Once all microphones and monitor speaker (plus power amps) have been set up and adjusted, you should turn up all Aux Send controls in those channels of your console that you will need for the monitor mix. Then, turn up the master Aux Send control until the first feedback occurs. Turn the control down a bit and leave it where there is no feedback. Now turn up the single slide controls on your ULTRA-GRAPH PRO, one after the other. Whenever feedback occurs, set the slide control of the respective frequency range to maximum cut. When there is no feedback, leave the control in mid-travel position. [. . . ] This also applies to defects caused by normal wear and tear, in particular, of faders, potentiometers, keys/buttons and similar parts. 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. [. . . ]