The 1050 will not matrix the center surround speaker on a digital DTS or DTS ES signal but will on a ANALOG DTS signal. This is done by using the 5.1 analog outs on your DVD player in conjuction with activating the "5.1 direct" button on the 1050. By going direct with the DTS analog signal, the 1050 will allow you activate the 6.1 surround mode.

There is a little blurb on it in the FAQ page about half way down.

Richard R