Summary: good speakers. just need to use a high pass filter from your radio if your radio has a built in high pass crossover and you will get good mids and highs and less bass on speaker cones so not to damage the speakers because they are not desighn to put out bass. you need to supplement your system with a sub woofer which they are design for.
Good for a bargain install, powerful for their size.
Christopher Rowe, Amazon
2 February 2009
Summary: I needed a good 4 inch speaker as my 1983 Mazda Rx-7 maxes out at this size in the front. I was skeptical to buy cheap $20 4 inch speakers. I had bought Pioneer 6.25 inch speakers for the rear in a retail store (the 6.25 inchers got WAY worse reviews than these 4-inch ones) and I wasn't to impressed with the 6.25 inch ones. They couldn't handle bass at all, but once again, those sizes were maxed out in the rear for a 25 year old car with a $300 budget on a stereo system.
Summary: Replaced a rattling pair of Boston Acoustics CX4's with these. The bass is not quite as good I have an 8" Rockford sub, and the bass from these alone would be a bit weak. Higher range response seems fine, but I am no expert. These suit my needs at a very reasonable price.