I just bought the Pioneer 03 and it works great.. I see what everyone was raving about..Everything works great, cd player, cd jukebox, cable box, PS3, I pod, USB drive.. All controlled flawlessly by Harmony 1000.. It also detected all my speakers in a 7.1 system with PCM showing on the display.. My question is how to get to THX surround EX? I press the THX button but only get: Movies Cinema and Games.. thanks in advance
Its encoded in the dd soundtracks and was implemented as the "6th" surround channel. Try one of the lucas star wars films. Your manual will state the THX processing

from pioneer
• THX Surround EX
THX Surround EX - Dolby Digital Surround EX is a joint development
of Dolby Laboratories and the THX Ltd. In a movie theater, film
soundtracks that have been encoded with Dolby Digital Surround EX
technology are able to reproduce an extra channel which has been
added during the mixing of the program. This channel, called
Surround Back, places sounds behind the listener in addition to the
currently available front left, front center, front right, surround right,
surround left and subwoofer channels. This additional channel
provides the opportunity for more detailed imaging behind the
listener and brings more depth, spacious ambience and sound
localization than ever before. Movies that were created using the
Dolby Digital Surround EX technology, when released into the home
consumer market may exhibit wording to that effect on the
packaging. A list of movies created using this technology can be
found on the Dolby web site at
www.dolby.com.
Only amplifier and controller products bearing the THX Surround EX
logo, when in the THX Surround EX mode, faithfully reproduce this
new technology in the home.
This product may also engage the “THX Surround EX” mode during
the playback of 5.1 channel material that is not Dolby Digital
Surround EX encoded. In such case the information delivered to the
Surround Back channel will be program dependent and may or may
not be very pleasing depending on the particular soundtrack and the
tastes of the individual listener.