Recently while taking my car out from winter storage, I noticed my speakers cutting in and out. Specifically, my tweeters continue to work while my mid/bass speakers cut in and out intermittently. Does anyone have any idea whats going on? I'm suspecting there might be an issue with the amp connection or maybe behind the pcm. Does anyone know where the amp is located on the car? Its an 07 gt3. Thanks in advance.

 

My car has the exact same problem! It came out from a 3 months hiatus. While the tweeters & mid ranges are fine, bass on both door speakers are cutting in & out intermittently. Hope someone can advise on the possible cause as well as solutions? It's also a '07 997.1 GT3.