I picked up a set of the full 9 yards of Stanly Screamers, dual 604's and MR94's. They are beasts. So I decided to dial back. I am now running a single 604 crossed at about 2k, driven by a pair of 10 watt tripath amps.and they are nice. I did the 828/515 and/or 1005's.These blow them away. Now I am an old fart who has the prerequisite hearing loss above 10-12k. so you can factor that in.