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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

Live Sound/PA


AKG WMS40 Pro Universal Set Single Wireless Guitarbug System

Price: 250.00
Retail Price: 348.00

The GB 40 guitarbug is probably the easiest way to turn a guitar, bass, or portable keyboard into a wireless instrument!...Read More


Fender 1270P Powered Stage Monitor

Price: 259.00
Retail Price: 399.99

Everything you would expect in a small monitor: rugged, lightweight, small, and loud. ...Read More


Samson Airline 77 UHF TD Wireless with AG1 Guitar Transmitter

Price: 259.00
Retail Price: 369.00

Samson Airline 77 UHF Wireless systems are an unbeatable combination. Samson Concert 77 UHF True Diversity Half-Rack Receivers matched up with Samson'...Read More


Samson Airline 77 UHF TD Wireless with AX1 Transmitter and Q7 Microphone

Price: 259.00
Retail Price: 369.00

Samson Airline 77 UHF Wireless systems are an unbeatable combination. Samson Concert 77 UHF True Diversity Half-Rack Receivers matched up with Samson'...Read More


Yamaha BR15M PA Monitor Cabinet (400 watts, 15 in.)

Price: 259.00
Retail Price: 339.00

The new BR-Series from Yamaha combines affordability with high performance. Five BR models are designed to fit the budgets of performing musicians, sm...Read More


Nady PEM500 16-Channel UHF Wireless In-Ear System

Price: 269.00
Retail Price: 349.95

The PEM500 Personal Ear Monitor System, offers all of the advantages of wireless in-ear monitoring such as mobility and freedom from feedback. For the...Read More


Peavey PVI8B Powered Mixer

Price: 270.00
Retail Price: 349.99

PVi Powered Mixers are easy to use and transport, and are designed with exclusive Peavey techonology!...Read More


Eminence Kilomax 15 Bass Speaker (1250 Watts, 15 in.)

Price: 270.00
Retail Price: 289.99

Designed for high power applications in main PA systems and sub-woofers, there is nothing that shakes the house like a KILOMAX. A massive 109 oz. cast...Read More


Behringer DCX2496 Ultra-Drive Pro Digital Crossover System

Price: 270.00
Retail Price: 339.99

The Ultra-Drive Pro DCX2496 is the ultimate digital loudspeaker management system with an unheard-of audio quality and feature list. It is an indispen...Read More


Nady UWS1KGT UHF Guitar Wireless System

Price: 270.00
Retail Price: 329.95

Unsurpassed UHF performance with 120dB dynamic range and operation up to 500 feet line-of-sight....Read More


Nady UWS1KHT UHF Handheld Wireless System

Price: 270.00
Retail Price: 329.95

Unsurpassed UHF performance with 120dB dynamic range and operation up to 500 feet line-of-sight....Read More


Nady UWS1KLT UHF Lavalier Wireless System

Price: 270.00
Retail Price: 329.95

Unsurpassed UHF performance with 120dB dynamic range and operation up to 500 feet line-of-sight....Read More


Alesis RA300 Power Amp

Price: 279.00
Retail Price: 359.00

Alesis' RA100 power amplifier has long been a favorite choice of musicians, hobbyists, and professionals alike. Now Alesis extends the RA's range thro...Read More

 

 
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¹ Taken from Wikipedia Article: Public address