My subwwoofer is 5 years old, it worked fine up till one day and then the standby light came on (red) and no sound would come from it. well one day I decided to take it out of th closet for fun to see if it would work and BAM! it worked fine again. Then I put it away for a few months, took it back out and now it doesnt work again only noise it makes it a small thump when i turn the power on. I know its not the reciever cause i just bought a brand new reciever yesterday since my old one stopped working. I know all the subwoofer settings are fine so i think its def somehting internal on the subwoofer (amp or something) although it worked fine then stopped and then worked again (???) weird, i know. so if anyone knows whats wrong please help otherwise let me know what is the best subwoofer I can get under $300. Thanks.