Airmotiv T1s at 4 Ohm? Nov 18, 2016 14:54:41 GMT -5
Post by Wideawake on Nov 18, 2016 14:54:41 GMT -5
That said, due to there being affordable, excellent sounding power amps out there that can deliver both high current output and high power output at the same time (and I think we all know exactly which power amps I am referring to here, but just in case someone doesn't know it yet: it's always been the Emotiva ones) nowadays the 4 ohms speaker designs are opening new doors with regards to the dollar per dollar sonic performance of a total playback system.
Not quite. A 4 ohm speaker design is no indication of "optimizing the parameters" and it has no bearing on the sensitivity either. You will need double the power to drive a 4 ohm load as opposed to an 8 ohm load to produce the same volume.
And 4 ohm speakers do not open "new doors with regards to the dollar per dollar sonic performance of a total playback system". I would argue that an 8 ohm speaker is more economical to operate since it requires less capable amplifiers to run them than a 4 ohm speaker would. It also allows the amp to operate cooler and thereby lengthens the life of the components.
The final impedance of a speaker depends on the number and choice of drivers and their impedance along with how they have been wired together; in series, parallel or series/parallel. There is no mystery here. Speaker manufacturers try and keep the load to between 4 and 8 ohms. The fluctuations in impedance (dips and rises) present more of a problem to the amp than a more stable load does.