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.
1 A bottom plate or sole plate is a horizontal wood member at the base of the wall, fastened to the floor frame. 2  Studs are vertical wood members, spaced evenly apart, and attached to both bottom and top plates. 3  Typical spacing is 12, 16, or 24â on center.