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| Re: Battery Powered "Biggish" PA System [message #320852 is a reply to message #320839 ] |
Thu, 08 May 2008 11:24   |
 John Chiara
Messages: 1405
Registered: April 2004
Location: Troy, NY |
Has No Life |
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A friend just told me that he saw a presentation at the Colosium in Rome..and it was all battery powered...not sure what or who but it worked well..he claimed.
"mix is a verb, not a noun" Sooo, as Aunt Bea would say.."Get to it!!!"
John A. Chiara aka. Blind Johnny
Albany Audio Associates Inc.
Troy, NY
518-961-0069 - cell
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| Re: Battery Powered "Biggish" PA System [message #320874 is a reply to message #320839 ] |
Thu, 08 May 2008 12:15 |
Jonathan Wade
Messages: 31
Registered: April 2004
Location: Georgia |
Should Get Out More |
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As someone said, you may be able to get it done with a car battery and an AC invertor. For the past several years, I have done sound on a float in a parade. Using a two pairs of powered speakers, a mixer, an EQ, several microphones, and a CD deck, it has run flawlessly for four hours continuously. (I have always kept a spare car battery as a safety backup, never have needed it) The AC invertors at auto supplier stores are rated via watts, so you would need to do some calculations to see if that is feasible for you.
Nice thing about it on a float is no gennie noise/gasoline fumes, etc. YMMV
jon
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| Re: Battery Powered "Biggish" PA System [message #320883 is a reply to message #320839 ] |
Thu, 08 May 2008 12:32 |
Dick Rees
Messages: 2523
Registered: September 2007
Location: St Paul, MN |
Has No Life |
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| jason misterka wrote on Thu, 08 May 2008 10:56 |
It needs to be rack mount.
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that's gonna be one big BIG rack
Does this set-up really require the ability to supply a 20 amp draw for 20 minutes?? Or does it just have to handle an intermittent heavy draw? What kind of program material are you talking about? You'll need to figure all this out.
you could use:
1. Batteries and inverter.
2. Quiet generator.
3. Fuel cell.
4. Magic beans.
[Updated on: Thu, 08 May 2008 12:44]
Neo-Luddite, Rocket Surgeon
"Less is mo"
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| Re: Battery Powered "Biggish" PA System [message #320909 is a reply to message #320880 ] |
Thu, 08 May 2008 13:15 |
jason misterka
Messages: 74
Registered: April 2004
Location: Virginia |
Should Get Out More |
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Yeah,
I know it's a weird request, but it's not bullshit.
College marching band. It is for stadiums, some of them 50,000 plus people. They play only to one side, however.
Our company provides the audio for the home games, a lot of PA (turbosound aspects and qsc wideline). We tie into a panel box for electrical.
They are looking for something for their away games. They know that there is no way they will be able to do anything like what we do for them.
They are looking for a 10 percent increase above what they have, not looking to perfectly cover 60,000 people or anything.
For away games, there is no guarantee that they will be able to have even 1 20amp circuit all to themselves, but this rig should be able to run on that since it is not at 2 ohms and not doing anything below 70hz.
It is for soloist - sometimes big deal guest artists (trumpeters, sax, etc) as well as for their midi percussion rigs (http://www.alternatemode.com/malletkat.shtml) So I don't have to have subs, but I do have to be able to pull some low frequency from time to time, and very percussive low frequency.
I am figuring this isn't possible without a generator or 3k of equipment. That's fine. I just need to let them know that I checked into it.
Anyone have any further ideas?
Thanks!
Jason
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