Windows 10 speakers at events?

I have to play background music on a laptop at an event. The problem is that when I play the sound, then the sound comes from my laptop speakers AND the big speakers. Of course I can adjust the volume of the speakers via the mixer, but if I adjust the volume on the laptop, this will affect both output devices. Since the speakers are connected via (3.5mm) jack, Windows detects no difference and there's only 1 output device available in the settings. The laptop is running Windows 10 (normal, no changes).

So I just want the sound coming from the big speakers and NOT from my laptop.

Can someone help me?

Via the headphone output from the PC into an amplifier AUX and from there via the amplifier volume, etc. Rules. Connecting speakers to the amplifier. So I did it with me:-)

Thank you for your prompt reply. I'll see, but I think that unfortunately no amplifier is available. I'm currently connecting the laptop via AUX to a mixer connected to the speakers. Is there perhaps another solution (preferably via software)?

So, with me in the PC is the (see picture.) That appears when I click on the speaker in the bottom right of the taskbar. Since you can also fix some things with. If you also have an ASUS, look again, if this can be done with it.