(dons Helmet, kevlar vest and cup.) Biwiring Cornwall IVs any benefit?

@jasonbourne71 1++

 If you were using 32 gauge wire bi wiring might be a benefit, but with Cornwalls if you are using anything larger than 18 gauge bi wiring will do absolutely nothing except waste your money. Bi amping with an electronic crossover is another story. With Cornwalls the best tweak you can run , by a country mile, is two subwoofers with a 2 way crossover set to 100 Hz. The Cornwall's woofer is responsible for a large part of the midrange and very low frequencies will cause Doppler Distortion. Adding subwoofers and removing those frequencies from the Cornwalls will clean up your midrange substantially and increase your headroom by about 10 dB.  

@paqua123 

Not a good idea with only one sub. At 100 Hz you will definitely be able to localize the sub and with the slopes most of these subs use they will creep into the midrange.  You need stereo subs to do this along with a two way crossover. The low pass filter that comes with most subs is a half baked method of trying to integrate a subwoofer. One of the benefits of subwoofers is being able to remove those frequencies from your main speakers which has serious benefits, but you need a real crossover to take advantage of this.