Excerpt: The RB-81 is an extremely efficient speaker; its 97 dB sensitivity specification means that it can generate a big sound with low power receivers, but it’s hearty enough to accommodate 150Wpc amplifiers.
Excerpt: When I ran across the Klipsch RB-81—in the newly renovated Reference Series—I couldn't resist ordering a set. It's been years since I've reviewed a two-way design with a great big 8-inch woofer. The very concept brought on one of my increasingly frequent bouts of nostalgia.
Excerpt: Bigger in every direction than any of their rivals, with the largest (20cm) mid/bass driver than we've seen for many a while, and an elaborate horn arrangement ahead of the 26mm titanium tweeter, the Klipsch RB-81s are a substantial proposition. And at almost 14kg each, they're more likely to bow your bookshelf than sit happily upon it.
Pros: Enthusiastic, spirited and upfront sound. And punchy. Very, very punchy
Cons: A lack of neutrality, which won’t suit all types of music