This question began in the receiver thread on THX certification and was suggested to be its own thread. Is there any inherent engineering/sound quality benefit to designing a speaker with a given impedence?
I just bought an H/K receiver that suggests not to use speakers of more than 8 Ohms. Am I losing anything with respect to sound quality by following H/K's direction?
Generally the lower the impedance of the speakers, the higher current the receiver or amp must be able to put out in order to run those speakers---in other words the bigger and more expensive the receiver/amp required.
So unless you are willing to drop some major cash on a higher end receiver/amp (I'd start at $1000 and go up if working down to 4 ohms) then 8 ohms is the safest way to go.