Battery powered DC plugs.

N

notbradsohner

Compression Addict
I am trying to make a mobile setup for video, but I need a preamp that runs on batteries. If I picked up one of those little ART, Rolls, or Behringer pres that take DC adapters for power, is there some kind of battery pack that feeds a DC plug that I could run these things from? Basically, a wall wart that runs on batteries instead of AC power.
 
You'll need to do a little math but you might get away with a UPS. You can find them at Best Buy or CompUSA. They come in different sizes and can be fairly portable.

Something like this maybe http://www.bestbuy.com/site/olspage.jsp?skuId=8022935&st=UPS&type=product&id=1157067061643

or like this; http://www.compusa.com/products/product_info.asp?pfp=cat3&product_code=298348&Pn=Back_UPS_1500_UPS

or a little bigger; http://www.compusa.com/products/pro...3&product_code=305898&Pn=Back_UPS_XS_1500_UPS

If you shop around I'm sure you can find better prices...just bone up on the specs...some companies make it hard to compare apples to apples.

Good luck!
 
notbradsohner said:
Ok, let me ask you this. You many 9v's would I need to power a 700ma 9v unit for say, an hour?
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Probably just a couple of alkalines, I would think. :confused:

Edit: As I recall, my Boss DD3 digital delay stomp pedal draws about 350mA and it will suck the life out of a new 9V battery in about 2 hours.

The more 9V batteries you wire in parallel, the more life you'll get out of them. I should be easy enough to do a couple of trials for you to see how far you can get.
 
Yeah, that'll probably do it.

If this is something that you plan on doing a lot, you could buy rechargeable batteries. They cost more up front but will save you $$$ in the long run.
 
So let me just make sure, I can never have too many batteries? Am I correct in understanding that the unit will only draw as much as it needs?
 
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