Fender Passport P150 Owners Manual - Page 13
Microphones & Speaker Systems - manual
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MICROPHONES & SPEAKER SYSTEMS Take the time to study the potential audience area to be covered with careful attention to the horizontal and vertical angles the speakers will have to cover. The height of the speakers above the audience is critical to effective sound coverage and optimum quality. For maximum sound quality and minimum room interference, Passport's speakers have been specially designed to work with tripod and speaker support systems. Using the optional Passport Tripod kit, set the speakers at the maximum safe height that will allow listeners at the rear of the audience area to get a clear "view" of the speaker systems. Nothing absorbs sound better that a few hundred people between you and the speaker system. Always set up speaker support and tripod systems in strict accordance with the owner's manuals and safety requirements of those devices. It is very important that the speakers are aimed and positioned as far away from and in front of the microphones as cables allow. A microphone is designed to pick-up any and all sounds. Your Passport P-51 microphones have a cardioid pick-up pattern that is designed to reject as much sound coming from the sides and rear of the microphone as possible. If the loudest sound the microphone picks-up is the sound from the speaker systems, destructive feedback-howling will result. Position the speakers and the microphones so the minimum amount of amplified sound gets back to the microphone(s), and the maximum amount of the sound you wish to reinforce is input. In this way greater volume before feedback can be realized and disruptive howling-feedback reduced or avoided. For music and other types of entertainment, place the speaker systems symmetrically either side of the stage, in relation to the audience. For effective "stereo" reproduction, all of the audience must hear both speakers. For mono and speech applications, consider placing the speakers as close together as possible and angled for coverage of the audience area. In this way greater output levels can be reached and a more natural single point source is created for the sound. Again, placement of the speakers is a critical element in the successful use of your sound system. Take time to carefully consider the variables and by all means experiment. There is no absolute right and wrong in sound, just what works best for your application. Finally, consider the proximity of the users to the microphones. For example: a person holding a microphone close to their mouth and talking/singing even at a medium level, inputs literally hundreds of times more signal power than one using the mic at a distance of one meter (three feet). The resultant difference in control settings between these two examples will significantly effect the quality and quantity of sound you will achieve with your system. 13