No bass!!! ( shaker 500)
 

Although I love the sound of the loud exhaust, i really like my music. Lately, when i turn on my radio it's loud for a second or two and then drops down to a quieter level. I have the bass cranked and the volume all the way up and it sounds as though I have a getto blaster in my car!!!! All the speakers seem to be working.
Not to much into the audio so, i have no idea where to start. Any ideas would be greatly appreciated. Thanks

I wonder, do we have that thing where when you are in traffic the volume goes up etc

Sorry, I forgot to mention that I had already tried that one.