AVS Forum Special Member
Join Date: Apr 2004
Location: Waterloo, Ontario, Canada
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From Jim Peterson at Lumagen on the Lumagen thread (last week):
Concerning audio dropouts after an update:
I can say from experience that if you do an update and then get any dropouts, this comes down to the HDMI cabling. The different releases can have slightly different output jitters. The Pro has some of the lowest jitter measurements of any HDMI device I know about, but the low jitter does vary from release to release by a small margin. However, this should not affect either audio or the video. If it does check your cables:
- Make sure you did not loosen a HDMI plug while updating. It happens. I did this to myself on the latest release. I had a drop out in video and then discovered a plug slightly moved out. Plugged it back in and no more dropouts.
- Make sure all passive HDMI cables are 2 to 3 meters long and 18 GHz Certified. Very important. Cables under 2 meter can cause issues with the signal being "too hot" and audio goes first due to the IMO poor decision that it is carried as a non-coherent data stream on top of video. I solve issues in the field all the time by getting people to replace their 1 meter cables with 2 meter cables.
- I recommend the Tributaries UHDP passive HDMI cables, but there are a few other good HDMI cables available. Getting people to switch to the UHDP has solved issues on a number of occasions.
- Might even help to clean the contacts. Pull each end of every HDMI cable half way out and push back in five times. This cleans the contacts and better forms the contacts together. This little trick has resolved a lot of issues in various systems.
Theater 1: LG OLED55E6P, Oppo UDP-203, Apple TV 4K, Dune HD Solo 4K
Theater 2: Sony VPL-VW885ES, Seymour Premier 16:9 128", Lumagen 4242, Oppo 103D (CFW) & 203, Apple TV 4K, Sony MDR-DS7500 Wireless Surround Headphones & Denon AVR-X6500H (7.1.4)