Completed speakers are just that - Fully assembled loudspeakers that are ready to play. Kits include the speaker drivers, the connector panel, hook up wires, "π" logo decal and a printed copy of the plans. For larger speakers that incorporate a compression tweeter and crossover network, kits also include the crossover, tweeter compensation cable assembly, Zobel woofer damper, and all cable assemblies are completed and ready to install. Every kit containing a compression driver also includes the horn flare and the bolts to mount the driver to the horn. So basically, a kit is everything you need except the cabinet, and the idea is that you will build them yourself or have a local cabinetmaker build them for you. Then you just install the components and you're ready to go.