We all know the modern complaint: movie sound sucks now unless you have a high-end sound system. Frantically turning down the volume after turning it up to hear the dialogue only to need to turn it up again can be frustrating. Now, this doesn’t solve the underlying problem, but why not have a “Volume A” and “Volume B” you can easily set and toggle between with the simple press of a button?
There is a hardware device, called a compressor that would solve the problem. Basically it reduces the loudest parts of audio on a gradual curve, which allows you turn up the overall volume.
Affordable ones range $100-$250, which should get the job done. Personally, I wouldn’t go either direction out of that range, more expensive ones will be overkill and cheap ones could sound bad or lack the controls to set it up right)
If you can get analog audio out of the TV in to a speaker/sound bar, it’s easy to setup.
So with a cheaper sound bar and a compressor, you could accomplish this for about $250-$400 depending on how much money you can to throw at the problem,
(Edit, some else pointed out if you use a PC for all your content, you can have software compressor on the PC instead of extra hardware)
I run a software compressor on my sff PC that I use as a media player. No expensive sound system required.