Mistakes are made all the time. I've found a few on the Triad website, which is around 1,000 pages. We review specifications, pictures, and measurements on an ongoing basis.
There is also no standardization for identifying a speaker as 4 ohms or 8 ohms. The impedance varies by frequency, and a 4 ohm speaker can be 28 ohms at one frequency and 2.8 ohms at another. Another 4 ohm speaker may not dip below 4 ohms, and it'll be easier to drive. Higher sensitivity makes a speaker easier to drive, too. I recall a $10,000 audiophile speaker from 25 years ago that was a 1 ohm load (very low) at 20 Hz (the worst possible frequency) and it was a real 83 dB sensitivity (a power sponge.)
That said, if someone went to the trouble of adding a warning in red that it was a 4 ohm speaker, I'm guessing it dips to 4 ohms at some frequencies. This is no problem unless you have a receiver of marginal quality.
This is an older thread, you may not receive a response, and could
be reviving an old thread. Please consider creating a new thread.
AVS Forum
A forum community dedicated to home theater owners and enthusiasts. Come join the discussion about home audio/video, TVs, projectors, screens, receivers, speakers, projects, DIY’s, product reviews, accessories, classifieds, and more!