I am uncertain if this was the correct place to post this question, but I figured I would give it a shot; if it isn't, please forgive me (perhaps mods can move it if deemed necessary)...
I am running an Onkyo TX-SR605 in a 5.1 channel configuration, with R20 mains, a CSi30 center, PSW10 sub and R15 surrounds. I am having issues with my '605's "handling" of Dolby Surround EX and DTS-ES tracks on some DVDs, and was wondering if someone could assist with an explanation to some of them; whenever I play a title that carries a Dolby EX or DTS-ES track, the indicator on the front of the Onkyo NEVER indicates "DTS-ES" or "Dolby D EX"...it always simply illuminates as standard "Dolby D" or "DTS"...I am wondering if this is because based on how the receiver is set up, with no back surround channel(s) (it's only 5.1), the receiver "knows" this, and thus plays these tracks back as Dolby Digital or DTS.
Under my Onkyo's setup menu, I have the "Dolby EX" setting set to "Auto" but still EVERY disc in my collection with an EX or ES track will not display on the receiver as "EX" or "ES" -- I know some discs don't carry the flag to tell these receivers or processors to play back this way, but this happens on EVERY title I own with these tracks...can this be because I don't have the back surround channel(s) and therefore the receiver just "knows" to run these tracks as Dolby D or DTS?
Furthermore, what happens to these "EX" or "ES" signals when played back on speaker arrays without the back channel(s) to properly hear it? In other words, I have a 5.1 setup, so I can't really "experience" that "ES" or "EX" effect from these tracks -- but from what I understand, the matrixed signals in these tracks are simply collapsed into the standard surrounds anyway, so is that what's basically happening...the EX or ES signals are "collapsed" into the 5.1 soundstage and into the standard surrounds? Would this affect how the receiver is not displaying "EX" or "ES" properly?
Thank you in advance to anyone that could help!