Ask 'em about phase angle, too. That should raise there hackles.
phase is arguably more important that impedance. And a hi phase angle at the same frequency as a low impedance dip is worst of all.
a 45degree angle will reduce apparent power by 30%, not at all trivial.
some amps, mainly tube, simply do not like such loads.
phase is arguably more important that impedance. And a hi phase angle at the same frequency as a low impedance dip is worst of all.
a 45degree angle will reduce apparent power by 30%, not at all trivial.
some amps, mainly tube, simply do not like such loads.