Hi I have owned a pair of these speakers for many years but have never been totally satisfied with them. I power them with a pair of Yamaha PC2602Ms power amps via a very simple pot as a volume control. The Yamahas put out 800 watts each into 8 ohms mono mode.
I have been looking to upgrade the base units or to add a subwoofer as the speakers are free standing and seemed base light.
Getting to the crux of my post I recently brought some ATC SCM 35s hooked them up to a Onyko 605 AV amp and was astounded by what I was hearing deep controlled base with massive control and just clear as a bell.
Couldn't wait so I hooked them up to my main power amps the Yamahas disappointed ! Ok hooked up the Urie JBLS to the AV amp, unbelievable I have never heard such tight control clear top and and plenty of base response.
Now I'm not a great lover of domestic consumer electronics but just try that little AV amp and I think you will be amazed no need for that subwoofer. Anyone want to buy a pair of ATCs no where near the 813Bs for sound quality!
Dave