Wayne Parham Messages: 18784 Registered: January 2001
Illuminati (33rd Degree)
I pad the horn on all speakers that also contain direct radiators. The difference in SPL is about 10dB, so padding is a requirement. It has the additional benefit of providing electrical damping, which is a good thing, since horns have a peculiar (peaky) impedance curve. Electrical damping smooths impedance a great deal.