On November 7, 2019 at 02:15, buzz said...
Measuring speaker impedance only at 1KHz can be misleading. In this case one would walk away rating the speaker at 8 Ohms, but the low points will fluster some amplifiers. If one would parallel connect two pairs of these "8 Ohm" speakers to an amplifier that is rated at 4 Ohms, the amplifier would probably freak out.
Totally agree. And coincidentally, I actually used to own a pair of 804Ss before I "upgraded" to the smaller 805Ss. The 804Ss were really barky in the mid. B&W didn't really make any improvement on that until the Diamond range was launched. However, I was driving them with my Gryphon Callisto 2200, so fluctuations in impedance were never an issue.
But, back to testing, I can guarantee that outside of carrying an impedance tester that does a full sweep, the 1kHz tester is going to give a far more accurate result than a multimeter, which is what I've seen countless "techs" use incorrectly over the years.
