"The tops and bottoms are wrong. So are the back speaker inputs. I hope you didn’t pay too much for them!"
No, mine are not pirated DCMs, they were made by the brother who stayed in South Africa and made them there for a period of time under the ARD name.
The famous Time Windows were designed by two final year engineering students at Wits University, Johannesburg, in the early 70s. One of the guys (his name escapes me) went to live in America where he launched the DCM speaker company with the Time Windows. The other guy, Hans-Joachim Fabianek stayed in SA, settling in a small coastal city called East London from where he built these beautiful speakers, and a few other models, under the name ARD.