24v to +- 24v

[thedarkrs]

Hey there guys.

I am very new to electronics, so please excuse me if I might sound like an idiot.
I need a little help with a project that I have started.
I made an audio amplifier, and tested it, and it seems to work.
Now I need to make a power supply for it.
It asks for +-20-48V.
I would be very happy if I can supply it with 40+ volts, because this way it will output the most power (I believe so).
I tested it with a transformer that has 3 wires coming out of it, and a rectifier.
But the thing is that I want to be able to use it in my truck, and it has 24v system.
So I cant use a transformer without a power inverter.
Is there a more simple way?
I did try to use 2 boost converters, 1 generating 26V and the other 52V so this way I have 0, 26, 52. Use the 26 as ground. and I got something that looks like +-26V.
It DID work, but the voltage would not stay stable on one of the boost converters, for some reason it would go up when I turn the volume up.
I did try to google for a solution for DAYS, and I didn't find anything that helped me

PLEASE HELP !!

[hamdi.tn]

i think you can use the 52V boost only and create a dual 24V from it

[PeterFW]

Now I need to make a power supply for it.
It asks for +-20-48V.
I would be very happy if I can supply it with 40+ volts, because this way it will output the most power (I believe so).

The only thing i can think of the top of my hat are two isolated 24v to 48v DC-DC converters, wired in series with a "center tap".
But they are rather pricey.
The other way around is cheaper, 24v to 12v DC-DC converter in the same configuration.

Is there a more simple way?

The simple way would have been to take the available power supply into consideration and to design a amplifier that works of a single 24V power supply with low loads
A Class-D amp with a full h-bridge output stage.

[Stephen37]

+- 24V = 48V DC with a stable center tap (that means you are in a big problem), you'd better switch to an automobile amp that takes only 24/12V or lower, it is way cheaper.

The only rational solution is to get a 1:2 transformer (110V->220V or inverse for example) with an inverter (a simple 555 circuit) that doubles 24V with a center tap and rectify it, any other solution gets way over 50$.

A single 50V boost converter can be split with a virtual ground circuit but you better avoid such a solution as much as possible especially if you want more than a few milliamps.

[peter.mitchell]

something like this would also work; http://www.ebay.com.au/itm/DC12V-To-dual-32V-Boost-Power-Supply-Board-For-HiFi-Amplifier-Car-Amp-350W-/201270963543?pt=LH_DefaultDomain_0&hash=item2edcaf2d57