Sold as a pairThe Control 28 is the largest of JBL Professional’s Control Contractor Series indoor/outdoor loudspeakers. Features:• Components: 8 in Polypropylene coated woofer 1 in Titanium coated horn loaded tweeter. • Built-in InvisiBall mounting hardware. • Weather resistant enclosure and transducers. • Readily paintable. • 90° x 90° high frequency horn. • Overload Protection Circuitry. • Sensitivity: 92 dB SPL 1 W 1m.