JBL Northridge E10 2-Way 4-Inch Bookshelf Speakers, Pair (Black Ash) (Discontinued by Manufacturer) 4-inch shielded PolyPlas woofers; 3/4-inch shielded titanium-laminate dome tweeters Straight-Line Signal Path crossover network divides signal with minimal processing 50 watts continuous, 200 watts peak power handling; 100-watt maximum amplifier power Gold-plated 5-way binding posts for strong connection Each measures 10-1/8 x 10 x 5-1/4 inches (W x H x D)