[ Acoustic membranes; ] Amplifiers; [ Calculating machines and data processing equipment; ] Digital voice signal processors; [ Horns for loudspeakers; ] Loudspeaker systems; Loudspeakers; Megaphones; Microphones [ ; Neon signs ]

[ Acetylene burners; ] Film stage lighting apparatus; [ Fluorescent lamp tubes; ] High intensity search lights; Light diffusers; Lighted party-themed decorations, electric light decorative strings; [ Luminous house numbers; ] Projector lamps; Wall lights