can speaker cables help?

Just to add to the good info from the previous posters -- EVERYTHING-- matters and contributes-- once the speakers are set up. Be it cables or the components themselves. Then there is room treatments. Got them first reflection points treated?--Big help,to be had.--Corners of the ceiling,etc.-- just like the ladys of the night--you gotta work the room!!

My brief experience in this hobby agrees with George's statements. I have and haven't noticed changes both good and bad to my system's sound by altering components, cables/cords, isolation tweaks, power conditioning and positioning.

But that being said, I apologize Claude for possibly adding confusion to your question. Cables whether they be interconnects, speaker cables or power cords can have an effect on soundstaging. It would help if you could list your components, then maybe some recommendations would follow.

I've found Monster M1000 interconnects to dramatically enhance the illusion of depth....IN MY SYSTEM.

I fully agree with the remarks posted by George above.
Speaker cables certainly can make a difference in the
sound of your system. So can speaker placement, the type
of interconnects you use, and the various components in your
audio system. Mostly what it comes down to is matching the
right components with the right connections. It certainly
helps a lot if you have rather revealing speakers - such
as Wilson or Thiel - which tend to show up the shortcomings
in your sources or interconnects.