I've used the Neglex in my studio for mic runs. For my own equipment projects, I use BNCs instead of RCAs. The crimp BNC is really easy to terminate onto RG59.

I've been playing with the idea of constructing an infinite baffle cabnet for my mains using the Altec 416 8B driver. I would probably keep the cabinet volume about the same as the A7 cabinet so as not to raise the resonant frequency of the woofer too much. I cross over now to my subs (four 18" JBLs) at 60Hz with a 4th order Linkwitz-Riley. I would want to keep the woofer offset to the rear of the cabinet so the physical alignment with the horn wouldn't be uspset. Any thoughts on this?