Just wanted to add the last update....after the Texas heat shut down the Harpoon a few times we decided that another amp needed to be added to the Hybrid tower setup. So, now the 6 Towers are spilt over 2 Harpoons.
I've got to say, Wow! The difference is amazing. It sounded great before, super clear, extremely loud....but now its a whole new sound. Before, while clear, it had a touch of the "maxed out" sound. Now, the towers scream and you have no feeling of the system tapping out, if that makes sense. Both surf and board range was improved. Board range was a significant difference. Before, you could hear the music, but it was just there if you wanted it. Now, you can't avoid it, there id no doubt to what you are listening to, loud and clear.
Overall, we are thrilled with the entire setup!

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2006 Supra 20 - Sold
2006 Supra 24 Gravity Games - Sold
2015 Supra SE450 - Sold