Should i go for a satnet 456 and add an upstage system (8khz cutoff for image tweet) OR get the satnet 480 with built in image tweet connections (4.3 khz cutoff for image tweet, which is the same as the main tweet, and -3 db attenuation)? Both crossovers have a 24 db/oct slope. The 480 will save me about $80 in the long run, but is the $$$ saved worth the extra octave that will come through the imaging tweeter. I have also just discovered that the highest a voice has ever been recorded was 4450 hz. I beleive this means that no average voices will sneak through the 480 image tweet, even though the crossover is at 4300hz.