Today I was playing with the HFL phone book in the driveway - no engine noise.

There was some serious hiss coming out of all of the speakers. I switched back to radio mode and noted that at low volume settings, I could still hear it. At 0 it was the same as in phone mode.

Any thoughts?

On a tangent, I stuck in the 5th Element Sountrack CD - WOW! :wow: It blew me away - wonder what that would be like in DVD-A.

 

Bad ground?

 

what kind of phone do you have? i know some of the motorola's were having problems.

 

SE T610 - I turned it off, too. No change.

To add, the hiss is what youy might expect from a cassette player playing a blank tape.

Could it be the command/voice mic in the car is always hot?

 

I have it on mine also, even with engine off and radio off, no phone paired, a hiss comes out of the radio, but, it has to be very quiet.

Definately in all cars, tried it in 3 demos.

Very high frequency, not all will hear it, some will just due to human ear sensitivity.

 

Just a thought, but I can see that noise being the cause for some of the dulling of the output quality on the XM reception.