I just saw the link posted by Max in post #12.
So TS bought a system from Ali without knowing the specifications.
Was there any additional info that came with the system?
This is a switching power supply. Can it accept a range of input voltages?

 

Here is a very similar PSU.
Input voltage: 200-240VAC

TS bought the wrong PSU for his amplifier.

https://www.thanksbuyer.com/llc-600...-high-sound-quality-for-power-amplifier-69467






LLC-600W LLC Switching Power Supply Board 600W ±55V Efficient High Sound Quality For Power Amplifier

Version Introduction:
There are two output voltages, single and dual, and the default is dual output ±55V. If you need other voltages, please choose the type you want when purchasing.

There are optional main output voltages, including 24V, 32V, 48V, 60V, 70V, 80V, ±25V, ±30V, ±35V,±40V, ±45V, ±50V, ±55V, ±60V, ±70, ±80V. Due to the use of different voltage capacitors, component parameters are different, and the actual product shall prevail.

Read Before Purchasing:
1. This product is a bare board that has high voltage circuits and must be purchased by someone who can use it. Our store does not bear all consequences caused by use!
2. For commercial purposes, some circuits and components are polished and encrypted, and schematic diagrams, PCB and technical support are not provided! Please make sure that you don't mind before purchasing.
3. For long-term high-power use, please add fan air cooling. The power supply has overheating, overcurrent and short circuit protection. Over-current and short-circuit protection are lock-up protections. AC power supply must be disconnected, and the main filter capacitor voltage will drop to 0V before powering on again. This power supply is a real LLC power supply, and the resonance circuit is a high-frequency sine wave, which is not an ordinary square wave switching power supply. It is very suitable for power amplifiers and has good effects.
4. Each power supply is tested before shipment. The board is continuously upgraded and revised. The component circuit may be changed, please refer to the actual delivered ones.

Parameters:
- Input voltage: AC200-240V
- Output: Single voltage 55V/10.91A; Dual voltage ±55V/5.45A; independent 12V/0.5A (unregulated, lower as the main voltage becomes lower, used in less demanding occasions, such as powering fans, etc.)
- Attention: Since the switching power supply only stabilizes the main voltage, the current of independent and auxiliary output must be less than the current of main voltage output; for example, the current of the main voltage at the time is 10mA, and the auxiliary and independent cannot carry loads above 10MA;
- Voltage stabilization accuracy: main no-load ±3%, loaded ±3%; (when AC220V input)
- Continuous power: 300W (continuous work at 25°C ambient temperature)
- Rated power: 600W (continuous work for about 5 minutes at 25°C ambient temperature, long-term work plus fan cooling)
- Instant power: 800W (power generated during dynamic signal impact, time is less than 100 milliseconds)
- Conversion efficiency: Max. 98%
- Dimensions: 116*67*40mm/4.6 x 2.6 x 1.6" (LxWxH)
- N.W.: 265g

Package Included:
- 1 x Switching Power Supply Board

 

That is not what I am saying.
We have been given no data on the board so we don't know what the board does.
Without that information I say get rid of the board.
You are saying that your audio equipment needs +/- 65VDC and +12VDC. Then give it that.
240VAC is a red herring.

If it is a 12 volt feed for the fan the why does the picture say AC 220v??With a description like that, I WOULD NOT BUY IT EVEN IN A STORE WHERE I KNEW FOR CERTAIN THAT THEY WERE HONEST.
That description drawing does not match the words, not even close.

Thanks for all your help.

 

What I see in that figure is 220 volts AC connected to what others say is a 12 volt output for a cooling fan. If that is the quality of support available from that site, you are in danger of starting a small fire very quickly.
I read that one information sheet stating that technical data is not provided, and that part numbers are removed. That tells me there is something to hide.
Unless the TS has the technical skill set to examine the assembly and understand the actual connections, I suggest avoiding that source completely.

 

One additional caution is that the picture shows a 500 watt amplifier feeding a single 8 inch speaker. I predict that leading to rather rapid destruction of the speaker.

 

One additional caution is that the picture shows a 500 watt amplifier feeding a single 8 inch speaker. I predict that leading to rather rapid destruction of the speaker.

Why can't anyone just answer my simple question? I don't need everyone's two cents about anything else. Wich was how can I getting 240vac from the 120vac I have

 

Why can't anyone just answer my simple question? I don't need everyone's two cents about anything else. Wich was how can I getting 240vac from the 120vac I have

The answer was given to you in post #2. The simpler solution is to replace the power supply with universal 100-240VAC input.

 

The answer was given to you in post #2. The simpler solution is to replace the power supply with universal 100-240VAC input.

And my even simpler solution is to try the power supply on 120 volts and see how well it delivers the power you need. I suggested this in an earlier post, here it is again.