4 ohm, 8 ohm or 16 ohm tap on amp for quad 57

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

Hi MrT, the 8 ohm tap is a pretty good bet. You'll have to try it and see how the highs do. If you use the 16 ohm taps, the highs will be rolled off.

There's lots of cool things that you can do the the ST-70 to improve performance- set up right it can be a real performer.

hi ralph:

thanks for the explanatiopn. i am using a vtl deluxe 120--a 5 ohm tap, and the quads sound too focused for my taste.
the stereo 70 might solve my problems.