Sound bar issue

Not sure this is the spot to ask but here goes. I have a Philips soundbar, series 5000. i have to crank it up to hear anything but if i just use my TV, I don’t have to put the volume as loud to hear. I got hte soundbar because my TV wasn’t always loud enough. I’ve tried HDMI, AUX in, and bluetooth. they all work but none make the volume very loud.