Review on Enhanced JVC CS-J6930 400W 6x9 3-Way J-Series Coaxial Car Speakers by Major Genesis

To fit a 2010 Toyota Corolla S. I also bought some aftermarket Revain mounting rings and the installation was fairly quick. The factory speakers were 10 years old, made of paper (which compromised quality) and had a mint-sized magnet. Talk about cheap! Come on Toyota do it better! In any case, these speakers have also caused noticeable changes in the factory radio. I would say 15-20% improvement. The biggest changes were that the highs were clearer without clipping and the lows were tighter (and tighter) with mid-bass punch. It's not "high performance". They have good performance at a reasonable price. About 2 weeks after installation we added Kenwood dmx4707s. The car now achieves the performance of the very best OEM/factory systems that we aimed for. Maybe not audiophile, but absolutely enjoyable.