ZD 542....I spoke to Richard about this very subject. He said that they use many different brands and kinds of wire for internal connections. They choose the wire that suites that particular speaker connection. There may be different types connecting the various speakers in the enclosure.
Speaker wire/cables opinion
I have some decent speaker cables in my system running from my McIntosh MC601 mono blocks, and audio space EL34 tube amps to my speakers. But I started to think, should I spend more for speaker cables when I don't really know the quality of the cables that goes from the speaker terminals to the speakers? For all I know they might be lamp cords connecting the speakers. I have never seen it anywhere, where the speaker manufacturer disclosure what type of wire they use. Can you imagine paying over $2K on speaker cable to find out they are connected to lamp cords that wire the speakers? I wish we could buy our own wires to connect the speakers internally (am I on to something here?). This would ensure consistency in the speaker chain. Probably that's why people and reviewers (not people=cats and pooches) say cables sound so differently. The internal speaker wires could be the "weak link". I am inspecting my speaker to see if I can get to the internal wires. What are your thoughts?