I am so pleased with the way my system is developing. The ICE power works perfectly. It is capable of delivering 2x1000W into 4ohms and drives the 15" Altec 416 8A beautifully. My low pass filter is set at 80Hz at present with 24bd slope.
To remind you, the midrange SEAS Exotic W8 runs full range without any cross overs and the high frequency Klangfilm 4" has just a single capacitor for high pass.
My next task is to upgrade the signal path to the ICE Power. This will involve a custom built voltage divider to replace the £6 device from E Bay, a linear power supply for the miniDSP to replace the existing switching power supply, and installation of a MUCH better volume control than the relatively OK pot installed at present.
It seems a lot of trouble to go to for frequencies below 80Hz, but I am discovering more and more that its these low frequencies that underpin and carry along any tune.
Pictures to follow.