Review on KEF T301C Center Channel Speaker - Pure White/Satin (Single), Enhanced Audio Experience by Mark Quarterman

35mm. These things sound GREAT and can be very loud. They have no bass at all, so make sure you use them with a subwoofer. The center channel sounds great. Be sure to get a larger 301 instead of a 101 for the middle as it comes with bottom holes for attaching a bookshelf. They need a louder channel for dialogue. Supports power up to 150W. Easy to install, comes with hex wrenches and bookshelf stands, wall brackets and wall mount rails. has four different angle positions for the stand. However, the stand cannot be screwed down.