These are Irving m Bud Frieds transmission line speakers signature A6 from 1997 made in Philadelphia Pennsylvania. I am driving them with a Harman kardon AVR amplifier from 2002, the AVR 3550 ( not hd) which is not in the picture/frame right now. These are two way speakers - 1 inch tweeter and an 8 inch midwoofer along with a forward facing transmission line similar to the PMC brand. They sound good. They're toed inwards and kept approximately 7 feet apart from each other. Seen in the middle is a Harman kardon subwoofer from the HKTS 11 home theatre in a box system. I run the speakers in a 2.1 configuration with the subwoofer. They sound good...given the high current capacity of the Harman kardon AVR amplifier the Bass is nice. Aided by the transmission line.