The linear electroelastic equations for small dynamic fields superposed on a static bias obtained from the general rotationally invariant nonlinear electroelastic description are presented. Since these linear equations are obtained from a properly invariant description, they may be and, indeed, are referred to the known reference coordinates, which are convenient to use because they never change with any bias. Intrinsically linear descriptions must be referred to the changed position coordinates when any bias, even a homogeneous temperature bias, is present. These coordinates are inconvenient to use and can lead to and, indeed, have led to unnecessary errors. It is shown that the linear equations referred to the known reference coordinates result in a far more accurate description of the behavior of electroelastic devices subject to different biases, including homogeneous thermal, than the intrinsically linear equations.