The two basic acoustic baffles available for use to relatively large depths (i.e., nominally about 2500 feet) in the ocean without pressure compensation are the compliant tube and spring plate types. Both have unique acoustic and stress/failure characteristics with some expected similarities. Within the frequency range in which these baffles are generally used the acoustic transmission is largest when the incident radiation is normal to the baffle plane. For this case we can easily generate aTnetwork circuit model for each type of baffle. Different layers that have periodically related spatial construction to one another can be interfaced by joining appropriate terminals to accommodate a circuit format for the composite multilayered baffle. This paper is a brief on the background physics and analysis of the two baffles, their circuits, and a comparison of their various physical/spectral features.