Adding sub question

I thought about the y connector but my Classe has both balanced and single ended outputs, I am currently using balanced to the ARC, I was going to hook the single ended outputs to the sub inputs, but was hesitant about doing this as my main speakers would still be getting a full range signal. Would this still be ok to have the full range go to mains and set the low pass on sub at say 80 hertz or so? I love the Classe and hate to get rid of it as it sounds awesome with the ARC(and is a solid 8/10 condition)would it get too `busy` in the low end doing it this way? Reason for wanting to add a pair of subs is I kind of like alot of low end, and I have to push the Tylers a little to get them to go deep like the are able to do.

Thanks for all the input after talking with the higher up in the household(wife). I am going to try taking the Nordost cables out of the equation first and see if that helps, I too remember reading about the Blue Heaven cables being a little lean, I purchased those cables from the same guy I purchased my Vandersteen 2ce sigs from a while back. As I have also read the same about the ARC D130 as far as bass goes. Any inputs on cables or amps? The one thing I know for sure is the Tylers are staying put.

Here is how I got to where I am today, when I first purchased the Tylers I was running them with a Rotel RSX 1065(don`t laugh!), and an off the shelf Sony blue ray player, with the Nordost cables, was very harsh at the top end on while `pushing` the Tyler to get the low end. Then along came the ARC D130, I was still using the Rotels` pre out driving the ARC got better in the low end but still a little too harsh on top end while trying to obtain the low end I wanted, then I found a deal on the Classe, seemed a little better, but still harsh and shallow on low end. Last weekend I hooked up the Sony along side of the Jolida, playing the same tune it ironically sounded near the same, just the Jolida was a little better in midrange, go figure a $100 blue ray player versus the Jolida, not much difference. Strange maybe cables not the source, but still could be amp related.

thanks for all the input, I am leaning towards starting with cables and also using the Sony to see if those 2 combined would help. BTW I when I stated `push` the Tylers I did mean turn volume up to get the low end louder, but like I stated top end got real harsh, I have tried moving speaker in from side walls and out from rear walls, helped some also. Will keep all posted after cable and source are done. Would an Audysee unit do room correction?

I think I found the answer!!! Went to a local dealer in WI speaking to him of my issues, he sent/loaned me a pair of Analysis oval speaker wires, they are their demos so the are broken in, a voila! 80% harshness gone. Way more pronounced on the low end, just may be the ticket! BTW these we not a biwire pair, What are your thoughts on putting jumpers in and running single wires instead of biwire(fyi the Tylers are setup for triwire) I currently have a jumper between the tweeter and midranges.