The DUAL LU43 is small in size, but big on sound. This 3-way multi-purpose speaker is designed to deliver accurate high-fidelity sound regardless of placement. The weather-resistant design makes the LU43 ideal for permanent or temporary outdoor use. Included with the LU43 feature set is an adjustable logo for vertical or horizontal mounting options. The LU43 is at home just about anywhere including areas ranging from back yards, patios and pool / spa settings.• Frequency Response 100 Hz-20kHz •Woofer 4 inch (100mm) polyelite with PVA Surround • Midrange 40mm poly cone • Tweeter 20mm Piezo dome Sensitivity 85.5 dB (2.83v @ 1 meter) • Nominal Impedance 4-6 ohms • Power Handling 50 watts RMS - 100 watts (IPP) Product Dimensions (L x W x H) 5.52 inch x 5.52 inch x 8.2 inch