The ES55 envelops your space with high resolution cinematic sound thanks to its Hi Res Audio certified Terylene dome tweeter and dual 6.5" Dynamic Balance polypropylene woofers. Polk’s patented Power Port® design delivers deeper more natural bass by reducing airflow turbulence and distortion. A rigorously braced low resonance cabinet ensures purity of sound by minimizing internal coloration. Built for compatibility and clarity it supports 4 or 8 ohm systems bi wiring or bi amping and excels across music gaming and home theater applications. **Features** \- Hi Fi Tower Speaker with Immersive Sound \- Hi Res Audio with Dolby Atmos & DTS:X \- 1? Tweeter And Dual 6.5? Woofers for Clear Highs & Deep Bass \- Power Port® Design for Bass Under 40Hz \- Works With Most Amps & Receivers \- Durable Build with Five Year Warranty **Content + Care** \- Signature Elite ES55 Hi Fi Home Theater Floorstanding Speaker Each \- Manual **Size** \- Tweeter: 1"/2.54cm Terylene High Resolution Dome Tweeter \- Mid Bass: (2) 6.5"/16.5cm low distortion mica fortified polypropylene drivers \- Crossover Frequency: 2.5kHz \- Recommended Amplification: 20–200W \- Inputs: Dual Gold Plated 5 way Binding Posts \- Dimensions (W x H x D): 8.5" x 41.5" x 12.5" \- Weight: 44 lbs.