The 8200e LR features the following rear mounted acoustic optimization controls

• A 3-position High Frequency Energy switch (changes the tilt of the tweeters response, not simply how loudly the tweeter plays). This allows much improved matching of the speaker's response to different room environments. Whether you have an acoustically live (highly reflective) or dead (highly absorptive) room, you can correct for varying acoustics.
• A Location Selector switch shelves up both the upper midrange and the high frequency output to compensate for being located behind a perforated screen or theater curtains, providing unrestricted detail at the listening position.
• A Boundary Compensation control adjusts for placing the speakers in custom cabinets or directly adjacent to a TV, delivering open and natural sound.