Ok....my comparison experiment went pretty well. And don't get me wrong. When I say 'hum' I am talking about OCD hum here. The 4 ohm taps have almost 0 hum. I mean quiet quiet quiet BUT the snap and 3-D quality goes too. At 8 ops the music is more lively somehow. The 4 ohm speaker connections present a more two dimensional sound stage. Either one could be a livable sound but I'd rather hear that ever so slight hum presence than lose even an ounce of the dynamics of the music. So my conclusion is: for me my Klipsch Lascalas II sound best at 8 ohms which is exactly what the manufacturer recommends after all is said and done. According to my DB meter neither registers any significant difference in volume. My speakers rate a 104 or 105 db sensitivity rating so power is never an issue. My amp produces 20+ watts which will blow me out if I even think about using a full WATT! Thanks everyone for the feedback
Should I use Impedance 4 or 8?
Maybe someone out in Audiogon land can definitively answer a basic impedance question for me.I own Klipsch Lascalas paired to a Raven Audio Blackhawk. Obviously they are rated as 8 ohm and the Raven provides both 4 and 8 ohm taps. The impedance tests on Lascalas show the impedance going very low at certain frequencies. (Like 3 at some frequencies) I've tried the 4 ohm taps which does squeeze a tad of hum out of the tunes but it seemed flatter and duller.Any advice? Will I damage my amp? Why the downgrade in dynamics at 4 ohms?