I have a really old (1995) Legacy 300w amp, it used to sound perfect for what I need but over the years it seems like there is less and less power. There are times when it seems like my 6x9's are putting out more bass, then all of the sudden it will have a ton of bass, then back to where I can't tell if it's doing anything at all. I have 1 10" Pioneer Sub hooked to it and the amp is bridged. I checked all my connections and they are secure, does anyone have any ideas? Is this something that can be serviced for cheap or should I look at a new amp? Like I said I don't need a whole lot, but I do like to be able to hear the bass.