When loud parts happen in certain movies I get a horrible crackling from my speakers. Same thing happened when I had a cheaper soundbar, the tv speakers, and now I have nicer Yamaha 5.1. I have teste...
Thank you for the replies. @Bruce no I made sure to test different HDMIs with the box. Even went as far as to take a HDMI and use it going from the PS4 to the receiver and test a blu-ray. Then take the same HDMI go from the cable box to the receiver and test the same movie but from the cox box, the movie happens to be on one of the movie channels and I have the blu ray. Did this with 2 different movies and the results are the same. The movies I used that have loud sound effects for this are Master and Commander and Apollo 13. When the cannons are firing in Commander and when the rocket is launching in Apollo 13 it sounds like pure garbage when watching it on the cable box, like so bad I am scared it's damaging my new speakers. Put the same movie in a blu-ray player and it sounds great. Sadly I just think this is the quality of hardware and/or software from Cox and there is nothing to be done for it, I seem to remember this happening with a different box at my last address, but I will try trading in for a different box and hope for the best.
Some used to call those brief passages of loud audio dynamic bursts. I don't think it's called that anymore but I always felt it well described those brief passages. Dynamic bursts of audio! aka Peak Power.
I'd always first point to a cable-box before I'd blame my components. However, worn pins and receptacles in cables can cause "floating grounds" and the physical thump during a dynamic burst could cause momentary disconnects. I was just eliminating your cable.
This problem is with the setup in your bedroom? It's a Mini Box > HDMI > AV Receiver > 6 Speaker Cables > 6 Speakers with a Blu-ray player also connected to the AVR? Your on-demand programming (Master and CC, Apollo) come from a Contour box? I'm unsure how Mini Boxes and "Main" Boxes interact.
I'll assume the Main Box has to decrypt the signal from Cox due to piracy concerns. Does a Mini Box also decrypt or does a Mini Box just rely on the Main Box to retrieve your channels and programs? I don't know and probably unimportant.
However, if the problems persists after swapping the Mini Box, you may need to also swap the Main Box. Something from somewhere in this Cox daisy-chain of audio decoding and processing is screwing up your dynamic bursts.
If there is a Cox setting for PCM audio, I'd select it on everything because...with your setup...you don't want a cable-box processing your audio.