User manual BEHRINGER DSP110

[. . . ] SHARK DSP110 Userss Manual Version 1. 2 April 2001 ® www. behringer. com ENGLISH SHARK DSP110 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. [. . . ] vocals) or subgroups of your mixing console!Route all channels that are susceptible to feedback (e. g. all vocal mics) to one or several subgroups, in which you insert one or several SHARKs. In this way, all channels that are less liable to produce feedback (e. g. those carrying line-level signals, or instrumental microphones with lower volumes) can pass the console unaltered, while only critical microphone channels are controlled by the DSP110. Thus, you can protect your sound reinforcement system against feedback and still use wanted feedback sounds. APPLICATIONS 15 SHARK DSP110 Fig. 2. 5: The SHARK in the insert path 2. 1. 6 Automatic tuning in of P. A. and monitor systems With the DSP110 you can improve the protection against feedback even before a concert begins, simply by tuning in your sound reinforcement system: once the system has been installed and set up, open all microphone channels and monitor paths, then enable FILTER LEARN mode on your DSP110. The SHARK generates short feedbackcausing signals, which are then sent back to its input and suppressed by the filters. These filters are permanently assigned and can be reconfigured as free searching filters only by means of a RESET. Without the SHARK you could raise the overall volume level only until the first feedback occurs. But with the DSP110 youve got considerably more headroom!Please note that the FILTER LEARN mode is limited to about 15 seconds. If you are using not just one DSP110 for the monitor path, you should employ some additional units to safeguard critical signal paths. Experience has shown that during a concert the musicians on stage usually want their instruments made louder in the monitors. With the SHARK you can raise the volume without running the risk of feedback. When the concert begins the DSP110 automatically tracks and removes varying feedback signals produced by moving vocal microphones. 16 2. APPLICATIONS SHARK DSP110 2. 2 The Feedback Destroyer in the SHARK The SHARK identifies feedback by splitting the entire frequency spectrum (20 Hz to 20 kHz) into sections of 1/60 of an octave and determining the level of each of these bands. The values calculated are then referenced to the level of the overall signal. The resulting level difference determines whether or not a filter is set. The SHARK allows you to adapt these decisive parameter to your needs: within a range from 1 through 100 you can edit the feedback detection sensitivity. [. . . ] 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 s misuse, neglect or failure to operate the unit in compliance with the instructions given in BEHRINGER user or service manuals. 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. damages/defects caused by force majeure or any other condition that is beyond the control of BEHRINGER. s 5. [. . . ]