Conclusion: 2013 Chevy Spark 2LT. I dropped in the db401 and the db461 sets. With the stock MyLink dash, they sound great! No bass as they are 4" speakers, however, the mids/highs are very crisp. Build this set up with a db1240dvc sub, a pa660.4 amp, and you've got a rocking Polk Audio collection that makes your music sound amazing! I mostly listen to rock, but all genres sound great. The materials are super-durable!
Summary: I bought a set of the 5s last summer for a custom install in my Ultra Classic lowers. Sad thing is that they sound better and louder than my 4" Boston Acoustics in my dash. Marine grade is the way to go every time!!! Buy them you'll love them!! Just make sure you are running an amp to them they love the watts!! Soundstream is the amp I'm using in my tour pack.
Summary: Mounted these in the rear position in my corolla wagon... It's amazing how efficient these polks are, and even the little 4" ones sound great...nothing but a Pioneer head unit hooked to them, but nearly too loud for my aging ears! I'll add a 50 watt x 4 channel amp in the future to clean up the LOWEST bass, but plenty happy for now! The marine rating is perfect for where I live,,,,in the rain forest of northwestern Oregon!
Conclusion: Excellent speakers for someone who needs a good sounding coaxial in a small installation space. Took me quite a bit of customization, but as I have a Toyota Landcruiser, I expected as much. Crisp, accurate highs with very little bass or mid, hey, it's a 5 inch speaker, so dont expect bass, frequency response listed seems accurate, and you really cant go wrong with Polks for under $55.00