I have in my van my first set of k horns. It's taken me 72 years to get here. It is also my first post on your forum. Thanks to you I bought them from your garage sale drove up and picked them up yesterday. I have heard so much about using low wattage amps for these since they are so efficient. All I have is a sansui 9090db and a ken wood 9100. What do you suggest. I am on my way home to listen to them.