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Old 30th July 2007, 12:20 AM   #1
ark is offline ark  United States
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Default Powering three Chalize amps - Invisus

As you may have read in an earlier post. I bought three Charlize amps that I plan to mount in a rack mount case above A DCX2946 *digital crossover.

What would be the best solution for powering these three at once?
keep in mind each will handle a different frequency range.

I was thinking of battery power.. one very large battery powering them..

Any suggestion on a good battery for powering three at once?

then I started looking at these.

Audiocom Invisus

Would one of these be sufficient to power these three amps at once?

If so, which model? the 12v positive or the 12v negative?

and how would you wire it.. do you wire AC to the Invisus unit (with a fuse and switch between) and then wire the three amps to it?

Pricey. yea.. but it would seem pretty elegant, and beat fooling with wall warts and batteries..

Any thoughts?
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Old 30th July 2007, 03:46 AM   #2
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Default Re: Powering three Chalize amps - Invisus

Quote:
Originally posted by ark
.......then I started looking at these.

Audiocom Invisus

Would one of these be sufficient to power these three amps at once?

If so, which model? the 12v positive or the 12v negative?

and how would you wire it.. do you wire AC to the Invisus unit (with a fuse and switch between) and then wire the three amps to it?

Pricey. yea.. but it would seem pretty elegant, and beat fooling with wall warts and batteries..

Any thoughts?
Hi,

These are just fancy DC regulators and rather expensive too! They require a DC supply and regulate that down to 12V (or other voltage).
Look at their max current capability: 250mA or 500mA with (5V output)

Version A

Heatsink height = 20mm

Maximum available current = 250 Milliamp (DC input 12V, DC output 5V)


Version B

Heatsink height = 38mm

Maximum available current = 500 Milliamp (DC input 12V, DC output 5V)

I thought that they might do maybe 800mA or 1000mA but even that's still not ideal for your application ....... and paying for three of these things ......... ouch!

Regards,
Martin
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Old 30th July 2007, 04:38 AM   #3
ark is offline ark  United States
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Aha! scratch that.

A battery it will be (for now).

thanks!
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Old 30th July 2007, 01:41 PM   #4
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Don't put all your faith into a battery. A battery isn't the be all, end all of power supplies. IMHO they are more trouble then they are worth.

I have some 12v adjustable 12.5A switching supplies if your interested. 12.5A is more than enough for three Charlize.

http://www.emtel.com/product_p/61-emv15012v.htm
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Old 30th July 2007, 09:36 PM   #5
preiter is offline preiter  United States
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High quality 12V regulated switch mode power supplies are cheap as dirt these days.

Any surplus old PC power supply will have more than enough juice to do the job. You just need to put a load on the 5V output.

You can also get cheap inline supplies meant for all sorts of computer gear (laptops, LCD monitors, etc.), but you may need to buy one for each amp.
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