Sam---Running the 806 down to 500, even with a 1st order crossver, has not led to audible distortion problems at fairly loud sound levels. JBL 1" drivers used like this have clacked all to Hell. Note that the 1" Altecs were intended to run down to 500 and be used in theaters under 450 seats in the bargain. In any case I'd use the 511B horn, even if crossing at 800, simply because it looks so cool and sounds so good.