* We present results of high-resolution numerical simulations of compressible 2D turbulence forced at intermediate spatial scales with a solenoidal white-in-time external acceleration . A case with an isothermal equation of state , low energy injection rate , and turbulent Mach number M \approx 0.34 without energy condensate is studied in detail . Analysis of energy spectra and fluxes shows that the classical dual-cascade picture familiar from the incompressible case is substantially modified by compressibility effects . While the small-scale direct enstrophy cascade remains largely intact , a large-scale energy flux loop forms with the direct acoustic energy cascade compensating for the inverse transfer of solenoidal kinetic energy . At small scales , the direct enstrophy and acoustic energy cascades are fully decoupled at small Mach numbers and hence the corresponding spectral energy slopes comply with theoretical predictions , as expected . At large scales , dispersion of acoustic waves on vortices softens the dilatational velocity spectrum , while the pseudo-sound component of the potential energy associated with coherent vortices steepens the potential energy spectrum .