Tweeters used as part of a DJ setup

A set six tweeters or speakers attached to a metal front plate made by Miyako. Each tweeter is secured to the plate by four screws (one screw is missing). The tweeters are visible through the circular cut-outs in the plate. The back of the tweeters shows their conical shape and in between each tweeter is a piece of foam. The back of each tweeter has two metal fasteners attaching red and black coated wires. At the base of the tweeters’ cone there is white text that reads: [MIYAKO]. There is a metal and plastic transistor attached to the back of the last proper right tweeter.