Bi-amping

No need for any fancy jumpers! A few inches of copper wire will do just fine. That's what I use on my Snell Type A's.

@393gadget there is a big difference between bi-amping and going active, which is what has been discussed.. Bi-amping involves leaving the crossovers in tact and feeding each leg separately, going active involves removing the crossovers and having that function take place between the preamp and power amps. 

Pre 8 is the best way to achieve this.

Passive bi- amping can be achieved before the amps, given the right speakers. Marchant makes a passive line level crossover for this.

I did a tube biamping on a set of Maggie 3.3 removed the external part of the cross over and used a Bryston 10b. With two 120 watt solid state amps it had that Sence of ease you get with a huge amo but still had the speed of the small Amps. It costs a bunch but I did enjoy it for many years. The Sence of space and the like the singer is right there was in surpassed.