Make sure your inverter is *Pure* sine wave - not modified sinewave. To avoid nasty buzz noise, and for better efficiency. The power needs of music amps are usually massively over-stated https://invertero.com/ I have a client that is a "track" singer and his PA is a 200 watt head with two 12 inch speakers. He uses a deep cycle marine battery and a 500 watt inverter and can run his PA for right at two hours when he does an outdoor street gig.
Purchasing a Battery and Inverter to Run My PA
Hello Forum!
I've not posted before but am in need of some guidance and hoping I might find it here . . .
I am preparing to purchase a deep-cycle battery, along with a pure-sine power inverter, to run a pair of Yamaha MSR100 speakers during outdoor performances. I've done a good deal of research but I'm concerned that I may not full understand the power consumption of the speakers.
Both are 100w speakers, and the specs say that they each have a power consumotion of 70w. At a total of 140 watts, I caculated that the speakers consume ~ 12 amps, and that a 50 amp-hour battery could therefore power these speaks for ~ 4 hours (without factoring in % efficiency of the power inverter).
Is 70w correct, or is it only the "idle" power consumotion? Do they draw more than 140 watts when in use?
I'll need to know this in order to purchase the right battery and the right power inverter. Thanks so much if any one you can offer some input!
-Lou
I've not posted before but am in need of some guidance and hoping I might find it here . . .
I am preparing to purchase a deep-cycle battery, along with a pure-sine power inverter, to run a pair of Yamaha MSR100 speakers during outdoor performances. I've done a good deal of research but I'm concerned that I may not full understand the power consumption of the speakers.
Both are 100w speakers, and the specs say that they each have a power consumotion of 70w. At a total of 140 watts, I caculated that the speakers consume ~ 12 amps, and that a 50 amp-hour battery could therefore power these speaks for ~ 4 hours (without factoring in % efficiency of the power inverter).
Is 70w correct, or is it only the "idle" power consumotion? Do they draw more than 140 watts when in use?
I'll need to know this in order to purchase the right battery and the right power inverter. Thanks so much if any one you can offer some input!
-Lou