US Patent 11915675 Communications system, retrofit cabling kit, and retrofit connector interface

A retrofit cabling kit is suitable for use connecting an organ and a speaker, wherein the organ may be one of a Hammond® brand, model B3 or C3 organ and the speaker may be one of a Leslie® brand, model 122 or 147 speaker. The kit may include interfaces for attachment to each of the organ and the speaker and cables connecting the interfaces.