Wharfendale surround sound system

2 Wharfedale Diamond 9.2 bookshelf speakers. Nominal impedance is 6 ohms. Power handling is 100W. Serial number D92000126S. Made in England. 1 Wharfedale Diamond 9.CS centre speaker. Nominal impedance 6 ohms. Power handling 120W. Serial number D9CS000058 S. Made in England. 2 Wharfedale Diamond 9.5 floorstanding speaker. Nominal impedance 6 ohms. Power handling 150W. Serial number D95000106 S. Made in England. 1 Harmon Kardon sub-woofeand a marantz amp/receiver These speakers are suitable for a home theatre setup.