  Topological systems furnish a powerful way of localizing wave energy at edges
of a structured material. Usually this relies on Bragg scattering to obtain
bandgaps with nontrivial topological structures. However, this limits their
applicability to low frequencies since that would require very large
structures. A standard approach to address the problem is to add resonating
elements inside the material to open gaps in the subwavelength regime.
Unfortunately, one usually has no precise control on the properties of the
obtained topological modes, such as their frequency or localization length. In
this work, we propose a new construction to couple acoustic resonators such
that acoustic modes are mapped exactly to the eigenmodes of the
Su-Schrieffer-Heeger model. The relation between energy in the lattice model
and the acoustic frequency is controlled by the characteristics of the
resonators. This allows us to obtain Su-Schrieffer-Heeger topological modes at
any given frequency, for instance in the subwavelength regime. We also
generalize the construction to obtain well-controlled topological edge modes in
alternative tunable configurations.
