Hi Bill, Is that the same supplier of White Domestics in the UK? I didn't see any Motorola besides some no name woofers. By the way check this, from Wayne P. on this Forum: (http://www.audioroundtable.com/PiSpeakers/messages/6763.html) I always like to check the curves of response. If I (would) do alterations at home, in a speaker, I would like to measure them afterwards. That's only my opinion. By the way I have a pair of clones from Europe made I don't know where, and they are the worst s?@$%& I have ever listen to. I have another pair and they are pretty good. Some factories, when you check their website don't even show the response curves. I am told they go out of busyness some of them. Best Regards