I currently have a 5.1 speaker setup with my Yamaha RX-V1400 receiver. This receiver can auto detect the soundtrack and selects either the EX or ES mode on a DVD. I'm wondering about which mode to use when watching movies that have either a DDEX or DTS ES soundtrack. I know these modes are great for a 6.1 or 7.1 setup but do they work well for 5.1? Should I allow the receiver to detect these modes or turn them off since I don't have the rear surround speakers and go with just the Dolby Digital 5.1 track instead?
I think the receiver will adjust itself automatically. If you have only 5.1 speaker the receiver will split the rear back and chennel them into the SR and SL. So basically you can ignore it.