Recently I noticed middle pitched “chirps” when playing any 5.1 sources through the Playbase. After a bit of messing around I found the culprit to be a passive optical switch I was using to switch between the TV and PS3. When linked direct to the source device everything is fine.
It seems that an active switch is the way to go, which makes sense. Weirdly I’ve had the passive switch for a long time and the Playbase for about a year but only noticed this recently so either something has changed recently to make the Playbase more susceptible to noise, the switch has developed a fault, or I’m a bit deaf Tested all the cables direct and they were fine.
Anyway, thought I should post in case anyone else had a similar issue and it might help.
Before I get an active switch I was wondering if there is a device (at a reasonable price) which can combine the HDMI and Optical from the PS3 into a HDMI only to the TV. The TV is setup to send DD 5.1 to the Playbase but the PS3 only seems to be able to trans-code DTS to DD when using optical. I’ve messed about on the TV as well and as yet haven’t found a way for it to trans-code DTS to DD.