Charlize regulated PS

[Rafal]

Hi folks,

I just ordered me a charlize amp and I'm looking for a PS. How can I tell that a power supply is regulated?

Cheers,

Rafal

[theAnonymous1]

Measure its output........ put a load on it........ measure its output again.

[Rafal]

That sounds fine, but I'd like to know if there is a way to find out if the PS is regulated before purchasing it. There is a place in my town that will likely have a 12v PS but they will likely have no clue if I ask them if it is regulated or not.

Also, would 13.8V work too or will I end up frying the amp?

[Rafal]

would something like this work?
http://cgi.ebay.com/Pyramid-PS4KX-RE...QQcmdZViewItem

http://www.fcsurplus.ca/shopping/shopexd.asp?id=125

Also how come power supplies that put out 13.8vdc are actually called 12vdc?

[vt4c]

Rafal,
Both the link mentioned 'regulated'; so it's suitable to use either one to power your Charlize.

Powering it with 13.8V DC regulated voltage is fine as long as the voltage going into her does not breached 14.6V or so. In-fact, I found higher voltage (not too much) sounded much better.

[Rafal]

Awesome. Thanks,

I think I'll use that Puramid PS. The price is decent and it looks pretty robust.

I can hardly wait. This will be awesome. I also have a pair of visation B200's coming destined for open baffle.

[theAnonymous1]

Rafal, both the supplies you linked to are linear supplies. These will work fine, but they are bulky and heavy. Try searching for a switching supply. There are tons of them out there for the same price or cheaper that work just as well.

Also, as far as what voltage is "safe" for these amps, Tripath actually gives the "high power" rating at 14.6v so its obviously safe.

High Power: 25W @ 4 Ohm, 10% THD+N, VDD=14.6V

[Pano]

I run my AMP6 boards at 14.6V. Same chip as the Charlize. If you heat sink the chip to a metal case, you will have no problems.

The reason that the 13.8V supplies are labeled as 12V has to do with wheels. And the big metal boxes on top of them. You know, cars.

Automotive battery voltage has been nominally 12V for many decades now, but when a battery is fully charged, it is a little higher. And when the alternator is running, it is often putting out somewhere near 13.8 volts. That's why the supplies are at that voltage. It's a car thing.

[Rafal]

Thanks everybody.

Now, I have trouble finding a rotary switch but I found a toggle switch with On / Off / On configuration? Can I use that for the soft start? With this switch the current will have to be interrupted when going from soft start to on. If that is done quickly, will it be ok?

[Pano]

Should be OK.