Is your listening room acoustically treated?

[audio_engr]

Since you mentioned Jim Smith however, take a look at the final item in his Quarter Notes Volume 2 Issue 1 from early 2010. That recommendation is a shameless personal plug and some of my ideas have changed since then but it does discuss things you can do to treat a room without going out and buying acoustic treatments.

Thank you for the tips @David A

I will look up the Quarter Notes ... 

"the better your starting point the less you have to "correct" and the better the result will be so getting the room setup as good as possible should always be your first priority".

I have always believed in this and continue to fine-tune my setup in an otherwise extremely difficult room that is square in dimensions with low ceilings & differing ceiling heights. Its quite a challenge.