I'm in desperate need here...
I've got a $80 Sony deck which works okay I presume but everything sounds crappy just like when I had my Alpine deck. My speakers aren't connected to a amp neither do I think I want to install one due to the cost.

Could someone PLEASE look at my setup and fix it up so everything sounds nice before I head off on vacation?
I got JBL front speakers and JVC speakers in the back, the backs rattles so bad its disgusting. I want to get dynamat but doubt it'll help.

Someone please help.. I'll come to you at your earliest convince. I'm not rich but I want my system to sound NICE and SOLID.. Installing sat radio tomorro.