Wireless Subwoofer Connection - No loss of fidelity?

For normal speakers...there is a fair amount of fidelity loss when you hook up a wireless kit to them, but I do not think there is the same kind of loss for a subwoolfer since it is powered?

Is that true? False? Can I go wireless without reducing my sound fidelity with a subwoofer?

Probably showing my ignorance again...but I thought because the wireless bandwidth was limited...you don't get a full sound range via wireles...it gets truncated somewhat? Thus the fidelity loss?

Just wanted to make sure subs dont have the same problem.. Unless this is all just in my head and I can go ahead and do subs or speakers or anything else i need without worring about it?