This means that a speaker with a “nominal impedance” of 8 ohms and a program rating of 350 watts will need a power amplifier that can deliver 700 watts into an 8-ohm load. The industry says, buy a PA power amplifier that can deliver power equal to twice the speaker’s program power rating. If you want musicality then the BishopSound BP2k, BP4k and BP44k amplifiers are the best value and the most reliable on the market today.
#WHAT IS POWER AMPLIFIER PROFESSIONAL#
Suppliers tell the customer to buy amplifiers that are double the power of the speaker because most professional PA Power amplifiers are rated in RMS and speakers are often rated in Program Power.įinally in this section, note that “RMS power” and “watts RMS” are actually misnomers. RMS is the real pro-audio figure to concentrate on Therefore, if RMS is 100w, Program Power is 200w and Peak Power is 400w: You will see PMPO or Peak Power printed on colour packaging on speakers made for Car Audio, consumer products and some brands like Alto and Mackie where getting the sale is more important and innocent buyers who are not informed often take the bait.
Program Power is a figure that is double the RMS/AES.RMS or AES or Continuous is the exact rating of the speaker – RMS = route means squared and AES = Audio Engineering Society who publish a standard for the measurement of PA speakers which is generally a 2-hour test using pink noise at a constant level.Here is a quick guide to ensure your power amplifier matches your speakers and is the correct type of amplifier to give the power needed when the occasion or music asks for it. You will hear people tell you that a power amplifier needs to be double the speaker power but take care as it depends on what ratings you are reading! Read below.