🚗 Infinity PR9603ISH 6x9 3-Way Primus Coaxial Car Audio Speakers - Max 360 Watts, 3-Ohm Review

Excellent sound quality. Great speaker if you just add speakers. The price speaks for itself. Instantly louder than stereo!

precisely fitting when installed in the rear of the vehicle. Other than that, the speakers are excellent, consistent with other Harmon Kardon brands.

Great sound for the price, more bass than expected from the standard radio, the sound was very weak until the volume on the unit was turned up and then they spun

I use 4 of these in standard holes, the fit was too tight so I had to sand quickly. I hooked it up to a Cerwin Vega 5 channel amp and the thing is LOUD. Surprisingly balanced, but you need a head with a decent EQ to roll off the mid-lows a bit. I would use them again, very powerful speakers.