As you know, that lower-imp. tap is reserved for A+B, speakers connected in parallel or the speaker with lower nominal impedance. A good, issue-free amplifier should not deliver drastically different performance between two taps. When connected to 8 ohm rated speakers, the 2-3 ohm tap on my Parasound NC2125 actually generates less heat and performs more effortlessly than the 4-8 ohm tap.
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?
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Maybe this answers it but I'm still very confused about four versus eight ohms. @viridian does a great job in his second paragraph and the second paragraph has a lot of information in it. Maybe some further clarification on this important paragraph. Thank you. i Use the four ohm from my amplifier because I hear things may sound better when those ranges are explored by my speakers. Speakers tend to very quite a bit in the four and eight areas and this adds to the confusion in my tiny mind. |
Yeah. In my experience, disregard the advice some give to go with the tap that sounds loudest. I'm not informed on the science but I suspect more is going on than matching average impedance. My Audion 845 valve monos sound better on the 4 ohm tap into Coincidence Super Eclipses (92dB, nominal 14 Ohm) than they do using the 8 Ohm tap. |
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