Finally I have a new amplifier, but it has no sub woofer connection. I have 2 3-way boxes connected. I have also a set of Kef KHT 2005.2 satelite speakers. Lowest freq they have is 80 hz. Is it possible to connect them to the amplifier? Or can I damage this speakers or the amplifier? Amp Yamaha A-S201 3-way speakers Dual CL 730 Thx for any advice