This is a set of Klipsch Quintet IV  Piano Black Microsystem Speaker System. This is a five piece integrated home theater system including four satellites and one center channel speaker using 0.75" horn-loaded tweeters and 3.5" woofers.  This system retails for $599.95. 

Specifications

Quintet Satellite

• Frequency Response: 100Hz-20kHz±3dB
• Sensitivity: 90dB @ 1watt/1meter
• Power Handling:300 watts peak  100 Watts RMS
• Nominal Impedance: 8 ohms
• Enclosure Type: Bass reflex via rear-mounted port
• Drive Components: Two-way system using one .75 inch (1.91cm) magnetically shielded, polymer   dome compression driver tweeter with a 90°x40° Tractrix Horn and one 3.5 inch (8.9cm) magnetically shielded, poly cone woofer
• Tweeter:  0.75 inch (1.91cm) Polymer dome compression driver
• High Frequency Horn: 90°x40° Tractrix Horn
• HF Crossover: 4900Hz
• Woofer:  3.5 inch (8.9cm) Poly cone
• Dimensions: 7.5 x 4.25 x 6.375 inches
• Weight: 4 lbs. (1.8kg)

Quintet Center

• Frequency Response: 120Hz-20kHz±3dB
• Sensitivity: 90dB @ 1watt/1meter
• Power Handling: 100 watts RMS (300 watts peak)
• Nominal Impedance: 8 ohms
• Enclosure Type: Bass reflex via  rear-mounted port
• Drive Components: Two-way system using one .75 inch (1.91cm) magnetically shielded, polymer dome compression driver tweeter with a 90°x40° Tractrix Horn and two 3.5 inch (8.9cm) magnetically shielded, poly cone woofers
• Tweeter:  0.75 inch (1.91cm) Polymer dome compression driver
• High Frequency Horn: 90°x40° Tractrix Horn
• HF Crossover: 4900Hz
• Woofer: Two  3.5 inch (8.9cm) Poly cones
• Dimensions: 4.375 x 12.125 x 5.75 inches
• Weight: 6 lbs. (2.7kg)