I haven't, but if you haven't seen it before here is it's impedance curve:
http://www.quadesl.com/quad_main.html
Lots of interesting links, also, if you click on "reference info" at the left of that page.
The speaker is basically a giant capacitor, as you probably are aware, with its impedance varying all over the map. In the mid-range area, though, it stays mainly in the vicinity of 10 to 12 ohms, which would seem to rule out using the 4 ohm tap. I'd imagine, also, that the choice between 8 and 16 would tend to be amplifier dependent.
Regards,
-- Al
http://www.quadesl.com/quad_main.html
Lots of interesting links, also, if you click on "reference info" at the left of that page.
The speaker is basically a giant capacitor, as you probably are aware, with its impedance varying all over the map. In the mid-range area, though, it stays mainly in the vicinity of 10 to 12 ohms, which would seem to rule out using the 4 ohm tap. I'd imagine, also, that the choice between 8 and 16 would tend to be amplifier dependent.
Regards,
-- Al