Thank you for your reply. The change of the sound is unquestionable since I listened the system last time. It is is possible though that the change in weather (almost constant rain and 20F drop in temperature) has an effect.
Thank you for your reply. The change of the sound is unquestionable since I listened the system last time. It is is possible though that the change in weather (almost constant rain and 20F drop in temperature) has an effect.