Is the original Quad Electrostatic a “phase correct” speaker?
You bet. The first of the line, in fact! The directivity was slightly altered to suit stereo after the first 400, or so came off the production line. Peter Walker (1994) speaking to Ken Kessler : “And when stereo came along, you had to have two of ’em. A bit big for that but it worked very well. In fact after we made 400 of them we modified the directivity because of stereo. The directivity pattern was made for mono – not quite the same as stereo. Serial number 409 I think it was.” I’ll take PJW’s word on that, even if he styled himself a “…silly old man of 78…” in that same interview.
