Polk Signature Elite ES8 – 8" Powered Subwoofer

Powerful Bass + Small Footprint
Bring impactful bass to smaller spaces with a front-facing, high-excursion 8” woofer that produces deep, defined lows down to 28 Hz. It’s the difference between bass you hear and bass you feel. Perfect for compact home theaters or music systems, or for apartment dwellers who crave deep lows.

Intelligent Phase Control
Time-Smart Phase Control provides 360 degrees of phase adjustment centered around lowpass filter settings, ensuring precise system blending. Adjust polarity in 45-degree increments, displayed on LED indicators.

Power Port
With a narrow cabinet and front-firing orientation, the ES8 subwoofer sounds great anywhere—even against walls and on shelves. A Polk Power Port minimizes turbulence, reducing noise and distortion that mask midrange clarity. Its front-firing configuration means accurate bass no matter where you place your subwoofer.

Acoustically Optimized Cabinet
A rigidly built, ported cabinet is reinforced with FEA-optimized internal bracing that minimizes resonances and coloration, ensuring clean, effortless reproduction of low-frequency detail.

Advanced DSP
High-resolution 32-bit floating point processing with group delay-minimizing filters and precision limiters enables clearer bass with crisper transients.

Fourth Order Low Pass Filter
An adjustable 4th-order lowpass filter provides precise frequency control, for seamless integration with main speakers and superior overall system performance with open, balanced lows and mids.

Power Save Mode
An auto-sensing power supply reduces power consumption when the subwoofer is not in use.

Designed in USA
Proudly engineered and designed in Baltimore, Maryland, Polk products are crafted to meet high standards of quality, performance, and reliability, ensuring a premium audio experience that is the pinnacle of American Hi-Fi.

Details & Specifications

Speaker type: Subwoofer
Bass type: Vented with Single Internal Power Port™
Frequency Range -3dB: 32Hz - 180Hz 
Frequency Range -10dB: 28HZ - 400Hz 
Continuous (RMS): 100W
Amplifier type: Class D
Phase adjustment: -135° to +180° in 45° increments
Low-pass crossover frequency: 50Hz-160Hz + LFE 
Product dimensions (W x H x D): 15.1 × 12.8 × 15.2 in. / 325 x 383 x 386mm 
Product weight (each): 13kg 17.7kg / 21.6kg
Feet: Permanently installed (no levelling)
Inputs: Line level RCA Left + Right, LFE Single RCA 
Controls: Main power On / off rocker, Auto Power Auto-on / always-on, Gain Volume +/- pushbuttons, Low-pass filter Low Pass +/- pushbuttons, Phase Phase +/- pushbuttons

IGNORE: ES8, ES 8, E S8, E-S8, ES-8, E S 8, E-S-8