Conclusion: I had to replace some blown Nokia speakers. The remaining Nokias sounded tinny. The addition of these two in the back gives depth and clarity to the music. Now, I can hear the locations of the individual instruments. Plan to buy another pair to replace the remaining nokias.
Conclusion: I have owned these Polk DB 501 speakers now for 6 months. They did not hold up. Sound is now distorted and no better than the stock speakers I replaced that had been in the Goldwing since 1998. I am getting a fluttering sound on the Base. I would not recommend this product.
Conclusion: I have 1993 Honda Accord EX and I bought these for the front door speakers and I had to do minimal work to install them. Honda had the speaker terminal connectors already on the stock speakers so installation was a breeze. What a world of difference, I love them.