This is a video of two Kustom KSE-215H Cabinets loaded with four Eminence Gamma 15A's driven with a 15Hz Sine Wave signal at 525 watts each, which is well short of the Speakers 600 watt Program Rating (50% of Peak Handling). I apologize for the Fan Noises as My Amplifier is an old Class H and becomes hot normally running high current such as in this video.<br />...<br /><a href="https://www.youtube.com/watch?v=MtQ0MpaH4cg" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=MtQ0MpaH4cg</a>