An interesting quote from the article:
There is a general misunderstanding among many consumers that a loudspeaker placed vertically or horizontally will sound the same. This is completely false! A crossover that has been optimized for a vertically placed loudspeaker will likely have excellent horizontal off-axis performance but the vertical dispersion will be far less uniform. Placed in a horizontal position, that same loudspeaker will now have excellent vertical off-axis performance but compromised horizontal dispersion.I recall testing this idea many years back by flipping the VP150 into a vertical position.
