Originally Posted by
svt2205
This is from a post over on another F150 site.
"A 90db speaker and higher is recommended when using a low watt factory HU as well as a low watt speaker, 2 watts RMS and higher."
The guy who posted this installed 2 sets of Kenwood KFC-C6879ie 6" x 8" Coaxial Car Speaker.
Hope this helps
Very true. Sensitivity is an important factor.
Most people cannot audibly tell the difference in a 89db as compared to a 91db but the speaker definitely will notice the amount of input coming to it.
I would love to know what the factory head unit is putting out. Most aftermarket units are at least 20x4 RMS, if not more.