Have any of you recent happy CHT-15 owners who have connected via low level used a Y spitter for the input on the sub, and if so have you noticed any difference in performance. I am aware that this is to prevent the sub going into 'sleep' mode during quieter scenes when in auto mode, however, I think I noticed somewhere a mention that this also improved the response time of the sub, is this right or have I got it wrong again! If this is a worthwhile investment (though it's hard to beleive how I could improve the sound of this great sub) what is a good splitter to use and where is a good place to buy. I tried my local store yesterday and the guy convinced me that I did not need to use this, you'd think he would want my money! thanks for any help guys. P.S. Here's another silly question. What is the Audio/Video switch at the back of the sub for, I never had one of these on my old rel q200e, I really hope this is not a daft question.