A speaker's wire plugs are generally red (positive) and black (negative). Red wires connect to red plugs, and black wires connect to black plugs. If a speaker's wires contain different colors, the wires should be matched to their plugs by their positive and negative symbols. Full Answer >.
Finding wall studs. Wall studs in modern homes are spaced 16 inches on center -- that is thedistance from the center of one wall stud to the center of the next is 16inches. In older homes, studs may be 24 inches apart, or spaced irregularly.
There are also some other limits that must be met for shear stud connectors: 1  The diameter of the stud, dsc, cannot exceed 2.5 times the thickness of the beam flange (dsc < 2.5 tf). 2  There must be at least 1 of lateral concrete cover. This means that the clear distance between studs must be at least 1.