Summary: Improves the overall sound and fidelity of the radio from the stock speakers. The positive and negative leads needed adapters the go from "large to small" and "small to large". Positive and negative were reverse from stock speakers. Fit was perfect.
Pros: Sound, Fit & finish, made for outdoor applications.
Conclusion: I have no complaints regarding the product or customer service. Sonic Electronix shipped a quality product at a reasonable cost. Durability is rated at a 3 as of now, I've only had them in use for a few weeks.