I have tried a 416 in a 612C with 288 and a N500-8A crossover.I agree with Zelgall that you have to drop the horn down to just above the woofer also you have to pad the 288 down as it will overpower a single woofer and sound like all Mid-HF.When I shelved the 88 it did sound effort less.With a little work or tweaking can be a good combination.