Shielding is a means of preventing RF and EMI from disturbing/distorting the signal within a cable's conductor. This is far more important in an interconnect than a speaker cable due to the relative power of the signal. RF and EMI can also be prevented from harming the signal in an interconnect by the geometry of the weave. SO - simple answer is don't bother looking for shielded speaker cables and either use a shielded interconnect or one with a proven track record of good geometry like Kimber Kable.
Is shielding necessary on interconnects & speaker cables
I have a tube cd player and a intergrated tube amp. I am getting ready to buy speaker cables and interconnects. Do I need to buy shielded or unshielded cables. What are the pros and cons of each type. Is there sonically any differences. I am leaning towards unshielded. Thanks