Using　3-Dimensional　(3D)　sound　sources　as　secondary　sources　to　2-Dimensional　(2D)　sound　field　reproduction,　it　is　termed　2.5-Dimensional　(2.5D)　sound　field　reproduction　which　is　currently　drawing　broad　interest　in　acoustic　signal　processing.　In　this　paper　we　propose　a　method　to　reproduce　a　2D　sound　field,　using　a　circular　array　of　3D　High　Order　(HO)　loudspeakers,　which　provides　a　mode　matching　solution　based　on　3D　wave　field　translation.　Using　the　spherical　addition　theorem,　we　first　obtain　a　spherical　harmonics　representation　of　a　2D　sound　field　reproduced　by　an　array　of　HO　loudspeakers.　Then,　the　corresponding　relationship　between　the　reproduced　sound　field　and　the　desired　sound　field　is　established　by　spherical/cylindrical　harmonic　expansions.　Finally,　the　modal　weights　of　HO　loudspeakers　are　designed　by　using　a　least　squares　method.　Simulation　results　show　that　the　proposed　method　extends　the　reproduction　region　and　significantly　reduces　the　required　minimum　number　of　loudspeakers　over　the　other　referenced　methods.