A Word About Acoustic Feedback
All PA systems have a potential for feedback, which occurs when sound from the speakers returns to the microphone and is then re-amplified and sent through the speakers again. This generally manifests itself as a sharp, sudden high-volume piercing sound which can damage the loudspeakers' high-frequency horns or tweeters - and audience members' hearing.
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Sound engineers take several steps to prevent feedback, including ensuring that microphones are not pointed towards speakers, keeping the onstage volume levels down, and lowering frequency levels where the feedback is occurring, using a graphic equalizer, parametric equalizer a combination of both devices, or a notch filter.¹
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Ion Audio iPA03 Portable PA System with iPod Docking Adapter - Ion Audio's iPA03 is the perfect portable speaker system for traveling musicians, entertainers and event coordinators. A long-lasting rechargeable battery, sturdy construction and portable design, make certain the iPA03 can be taken anywhere and everywhere. It features a high-efficiency amplifier with four inputs for connecting microphones, instruments, CD/MP3 players, and a universal dock for iPod. This powerhouse sound system makes every mobile event a success. |
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Roland Cube Monitor / PA - Versatile and portable, the new CM-30 CUBE Monitor delivers 30 watts of audio punch through a rugged, high-quality 6.5" coaxial 2-way speaker with stereo preamp. The CM-30 is ideal for home-studio and wide-ranging monitoring applications, but it can be used for live monitoring onstage as well. |
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Hisonic Rechargeable & Portable PA Wireless System, HS110R - The newly released HS110R is an invaluable tool for professionals who place heavy demands on their voices, including auctioneers, teachers, tour guides, trainers and trade show presenters. It can also be used by prople who are speech challenged (very soft speaking voices or esophageal speech). It is extremely helpful for people with Parkinson's, MS and other conditions that cause a strain on the larynx. This unit comes with a wireless belt-pack transmitter with a range of 100 feet without cutting in and out, you can choose either a lapel or a headset microphone to use at a time, if additional microphone needed, you can use the microphone input jack to plug in. Though this unit is compact in size and weighs only a little over a pound, it can amplify your voice up to a peak power of 25 watts. A carrying bag is included for excellent portability. You can also use it to play music by connecting your CD player, MP3 player or ipod to the audio input jack. One unique feature of this system is its 20-second digital recorder, you can record your message and play it over and over simply by pressing a button. |
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Behringer EPA40 Portable Handheld PA System - The EUROPORT EPA40 portable PA system has been designed for public address applications, projecting to a crowd of up to 100 people, while you strap it conveniently on your shoulder. This is the ideal PA system for business meetings, tour guides, classrooms and outdoor activities?ultra-compact, portable and easy to operate. It features a 5" full-range loudspeaker with 40 Watts of power, an integrated battery pack for 8 hours of continuous operation, Mic and Aux inputs as well as a high-quality dynamic microphone and accessories such as charger and cables. Get carried away by this cool and portable PA system! |
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Behringer 802 8-Input Mixer - A shade larger than the UB502, the UB802 features 2 INVISIBLE MIC PREAMPs (IMPs), 6 balanced high-headroom line inputs, 1 post fader FX send per channel for external FX devices and 1 stereo aux return for FX applications or as separate stereo input. There is also an effective, extremely musical 3-band EQ on all channels. The UB802 is well-suited for use with fixed audio and video installations as well as keyboards, samplers and computer application. |
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Behringer 502 5-Input Mixer - Introducing XENYX: Premium Analog Mixers from BEHRINGER With close to one million units sold, the UB mixer series has become one of the most popular mixer series of all times that has no doubt connected musicians all over the world. Our new XENYX mixers will take you to an even higher plane. The XENYX 502 has 5 inputs and main mix, stereo CD/tape plus separate headphone outputs. Additionally, assignable CD/tape inputs have been incorporated for routing flexibility. The new XENYX Mic Preamp matches the sound quality, transparency, headroom and even the dynamic range of boutique-style, stand-alone mic preamps. Our neo-classic "British EQ" brings back the warmth and musicality of those '60s and '70s mega-console desks that made music history. |
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Behringer 1202FX Xenyx Premium 12-Input 2-Bus Mixer with Xenyx Mic Preamps, British Eqs And 24-Bit Multi-Fx Processor
Product Features
Premium ultra low-noise, high headroom analog mixer
4 state-of-the-art XENYX Mic Preamps comparable to stand-alone boutique preamps
Neo-classic "British" 3-band EQs for warm and musical sound
Studio-grade 24-bit stereo FX processor with 100 awesome presets including reverb, chorus, flanger, delay, pitch shifter and various multi-effects
FX send control per channel for internal FX processor and/or as external send
Premium 12-Input 2-Bus Mixer with Xenyx Mic Preamps, British EQs and 24-Bit Multi-FX Processor.
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Behringer 1204 Xenyx Premium 12-Input 2/2-Bus Mixer with Xenyx Mic Preamps, British Eqs And Usb/Audio Interface
Product Features
Premium ultra low-noise, high headroom analog mixer
4 state-of-the-art XENYX Mic Preamps comparable to stand-alone boutique preamps
Neo-classic "British" 3-band EQs for warm and musical sound
USB/Audio Interface included to connect directly to your computer. Free audio recording and editing software downloadable.
2 aux sends per channel: 1 pre fader for monitoring applications, 1 post fader for external FX devices
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¹ Taken from Wikipedia Article: Public address
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