Highly annoying problem, hiss!

T16 · 16th July 2014, 22:39

So..

My car has a Mk4 BMW satnav, and the BMW 16:9 widescreen, also the full MG Rover Harmon Kardon system in.

Everything seems to work lovely, apart from the fact that with the key in the ignition and the engine off, I get a hiss from all four tweeters.

Once you have noticed this, you CANNOT unnotice it, and its incredibly annoying.

As soon as I pull the key from the ignition, and the headunit switches off/does whatever, the hiss instantly disappears and peace to my sensitive ears is restored.

Is there ANYthing I can do about this?!

16th July 2014, 22:39	#1
T16 I really should get out more....... ZT CDTi 135, ZT260SE Join Date: Feb 2011 Location: Dundee Posts: 2,877 Thanks: 10 Thanked 331 Times in 213 Posts	Highly annoying problem, hiss! So.. My car has a Mk4 BMW satnav, and the BMW 16:9 widescreen, also the full MG Rover Harmon Kardon system in. Everything seems to work lovely, apart from the fact that with the key in the ignition and the engine off, I get a hiss from all four tweeters. Once you have noticed this, you CANNOT unnotice it, and its incredibly annoying. As soon as I pull the key from the ignition, and the headunit switches off/does whatever, the hiss instantly disappears and peace to my sensitive ears is restored. Is there ANYthing I can do about this?!