Summary: Excellent quality speaker..purchased 6 of them. Easy to install. Magnetic cover is very cool and directional tweeter is great!!! Very happy with purchase and highly recommend to any in-home audio system.
Summary: I put these in for a video conference room and tested them playing iTunes from my mac. I tend to like bright, but transparent sound. I was really shocked at how good these sound. Until now I have never been a fan of in wall speakers and these beauties have changed everything - for the positive. I'm driving them with a simple(cheap!) LP-2020A Lepai amp from the MAC, BTW which is a perfect match providing clean power.
Summary: Go to Polk Audios site and see there list of unauthorized online resellers E&B (the reseller supplying these speakers to Amazon) is on their list, therefore you do not receive a warranty when buying these speakers on Amazon. I can speak highly of these speakers in their designed application, however DO NOT BUY them on Amazon if you are in the least bit concerned about a warranty.
Summary: I purchased these speakers for us as rear speakers in a surround sound system. WAF (wife acceptance factor) is an important issue, as well as sound. The room has cathedral ceilings. This was new construction, so running the wires was easy. The builder waited until the room was completed, then he installed the speakers. This was easy, and clamping them to the drywall was a snap.
Summary: We purchased the 620-RT for front right/left/center speakers use in a pre-wired room. The 620-RT is simple to install and the sound output is clean. The construction of the speaker itself is solid and an obvious step up from the cheaper RC60i's. We are using these for both music and theater and are very pleased with the performance. The magnetic "grill" cover makes for a nice low profile (flat) look too.
Pros: Solid construction of cones and magnets, easy install in ceiling and nice wire attachment posts, magnetic cover "grill"