How is This Possible???

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johnviera

Member
2011-08-04 2:54 pm
How can this speaker run on portable power consisting of 8 AA's batteries?

is it 3 watts? does it have a hidden 12V SLA battery? or does it run for 10 minutes?

I don't get it?

410mA draw?

Current Draw 410 mA

Expected battery life under continuous use Alkaline: approx. 8 hours (MAX), approx. 12 hours (ECO)
Nickel-metal hydride: approx. 10 hours (MAX), approx. 15 hours (ECO)
* These figures will vary depending on the actual conditions of use

BA-330 :: Products :: Roland


Roland BA-330 Stereo Portable PA System | Musician's Friend
 
Yeah, it's a very efficient 2-channel class D or T 5 watt mostly vocal speach P.A. using small efficient speakers and horns, without much bass. Average power is probably a fraction of a watt, thus the optimistic battery life figures. Now if you play compressed music loud then battery life will be very very poor. The power supply is 12 V but the 8 AA give 17.6 at 2.2 each X quantity 8. It appears to be stereo.

Could be cool for a street performer with an Optima car battery.
 
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