Ross,
I ended up getting a Samsung sound bar with subwoofer as a quick and decent fix to the problem you are experiencing.
The sound is surprisingly good for music and movies. Plus, it gives me a center speaker for TV and movies, which I didn't have.
We got this one because DW found it on sale at Walmart and brought it home.
http://www.bestbuy.com/site/Samsung...bolsp-app01-35?id=1218523234061&skuId=4755873
Plugs directly into any source with 1 wire. Has HDMI, Optical, or RCA's. Also play music from any Bluetooth device
We looked at a bunch of different ones at Best Buy and some sound a little better than others. Some are also a lot more money.(Bose, Klipsch etc.) This one was a good bang for the buck.
I suggest you take a look. I was surprised at how good some of them are for music. This setup leaves my factory speakers in the dust.
I mounted the bar directly over the TV and put the woofer in a corner. (It's wireless.) Took me about 20 minutes to do the whole works.
I left my other speakers alone so I can still play them independent, or with the soundbar setup. Trace