I just completed the install of my Zenith DVB-318. Now, every time a DVD starts, there is a loud popping sound from the sub just before the commencement of the audio. After the loud popping/cracking sound, the audio plays perfectly, it's just annoying and startling to my family and guests.
It is probably your subwoofer turning itself on upon recognizing a signal. What subwoofer and sub-amp are you using and what receiver/pre-pro do you use?
The sub is a Cambridge Soundworks Basscube 12, and Receiver/processor is a Sony ES series DA - 880 (i think?). I didn't have this issue when I was using my JVC DVD player, and it only started after installing the DVB-318.
Now that I think about it, there was one change in connections through this process. The single RCA cable from the receiver out to the sub was split and connected to the left & right channel connections on the sub, rather than just being connected to either the L or R connection on the sub. Could this be an issue?
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