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<blockquote data-quote="GammaRadiation" data-source="post: 7587666" data-attributes="member: 638609">This sounds like a good idea in theory, but in reality you&#039;ll spend almost as much on a 12v power supply that can handle an amp as you would on a plate amp of similar power output. That is, you spend more in the long run. Since music is dynamic you can use a battery and a charger. I&#039;d recommend a sealed battery and a ****** charger if you&#039;re going to go this route.Beware, it&#039;s difficult to perfectly rectify 110/220 AC into 12-14v DC. Thus, there is a high chance of there being some noise you can not get rid of (without some mondo diodes which wouldn&#039;t be good for efficiency). This is why the highest end 12v supplies for test beds cost thousands of dollars.In highschool I took 3 350w ATX power supplies, modified them to just output 12v, and wired them in parallel. It worked. Ran a 400w RMS amp pretty well. Cost me $50 for the amp and $0 for the supplies (were burnt out at 5 or 3.3v or from trash computers). However, there was a 60Hz buzz always, independent of gain or volume. //content.invisioncic.com/y282845/emoticons/blackeye.gif.66a1670f5aaf7f406e783a63e3387dc5.gif</blockquote>

[QUOTE="GammaRadiation, post: 7587666, member: 638609"] This sounds like a good idea in theory, but in reality you'll spend almost as much on a 12v power supply that can handle an amp as you would on a plate amp of similar power output. That is, you spend more in the long run. Since music is dynamic you can use a battery and a charger. I'd recommend a sealed battery and a ****** charger if you're going to go this route. Beware, it's difficult to perfectly rectify 110/220 AC into 12-14v DC. Thus, there is a high chance of there being some noise you can not get rid of (without some mondo diodes which wouldn't be good for efficiency). This is why the highest end 12v supplies for test beds cost thousands of dollars. In highschool I took 3 350w ATX power supplies, modified them to just output 12v, and wired them in parallel. It worked. Ran a 400w RMS amp pretty well. Cost me $50 for the amp and $0 for the supplies (were burnt out at 5 or 3.3v or from trash computers). However, there was a 60Hz buzz always, independent of gain or volume. [IMG]//content.invisioncic.com/y282845/emoticons/blackeye.gif.66a1670f5aaf7f406e783a63e3387dc5.gif[/IMG] [/QUOTE]

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