Polk Signature Elite ES90

The ES90 modules sit on top of your existing floor-standing or bookshelf speakers and angle sound upward. The audio reflects off your ceiling and back down to your listening position, simulating overhead sound effects for formats like Dolby Atmos and DTS:X.

While they are specifically designed to physically match the footprint and aesthetic of the Polk Signature Elite (ES55, ES60, ES20) and Signature (S20, S55, S60) series, they can technically be placed on any speaker with a flat top surface. Just ensure your existing speakers are stable enough to support the weight of the modules.

You do not need a special amplifier, but you do need an AV receiver that supports Dolby Atmos or DTS:X processing. The ES90s connect to the 'Height' or 'Presence' channels on your receiver just like any other passive speaker.

No, the ES90s feature a molded rubber base specifically designed to isolate the module from the speaker cabinet below. This prevents unwanted rattles and ensures the sound remains clean even at higher volumes.

The larger 5.25-inch midrange driver allows for a fuller, more robust sound profile compared to the smaller, often tinny drivers found in many compact height speakers. This ensures that overhead effects have enough body to blend seamlessly with the rest of your home theater system.

These are specifically voiced and angled for height reflection, so they are not ideal for use as standard surround or bookshelf speakers. Their frequency response and dispersion pattern are optimized for bouncing sound off the ceiling, not for direct listening.