I know EXACTLY what you mean by "more of the sound"...Oh yeah....
I read you like a book
What you need my friend is the MULTICHANNEL STEREO SETTING on your receiver. There are a couple of dedicated threads on a different forum that gets into vast amounts of technical detail on it, if i remember (invokes the Floyd Toole book, etc). But, keep it simple for now. You can get 2 more of your speakers and this setting sends the same stereo signal to all....You will feel like you are enveloped & immersed....more of everything...oh yeah
Stereo doesn't cut it for everyone's mood at all times. That's why other multichannel music modes were invented. I, for one don't always want my musicians upfront on a front stage fiddling away quietly....I want my musician minions to circle me, envelope me...come at me from all directions....all directions for ME, THE EMPEROR!!