Figure F.6a illustrates a generic two-port description of the series adaptor.
The derivation can proceed exactly as for the parallel junction in §F.2.1, but with force and velocity interchanged, i.e., , and with impedance and admittance interchanged, i.e., . In this way, we may take the dual of Eq.(F.14) to get
as diagrammed in Fig.F.6b. The one-multiply form is now
General Series Adaptor for Force Waves
General Parallel Adaptor for Force Waves