Conclusion: anything less is a complete waste of money!! JL,s don't even come close! had nothing but Alpine for 38 years! never dissapoint!! First time for me to go MAGNETLESS!! and man "WOW" the 6 3/4 plus the 6x9s don't need sub!! but doesn't hurt lol. Put my JL,s in the boat!
Conclusion: I've been an devoted Harley rider for many years and I've either ridden Ultra Classics or Street Glides. With either one, it has always been a must to change out the speakers on these bikes. The Alpine SPR-60 6.5 speakers have proven to be a good investment. They are a little pricy but well worth the money. I have used 2ohms and 4 ohms systems in the past and found that the 4 ohms systems seam to sound clearer and provide more bang for the buck.
Summary: 1st when I installed them it dident sound that good but after like a week of use they sound soooo good realy nice speakers I dident think it would sound this good and if you have a subwoofer box so u can divide the bass oh you'll have a club in your car trust me
Conclusion: Installed into a Victory Cross Country with a RF PBR300X2 amp. These speakers can really take the power! Clean highs, good midrange and I can feel the bass in my handlebars. I blew a set mm651 polks in about 4 hrs with the same amp. Thanks Alpine! Time to replace the speakers in the Camaro! I can't have my bike sounding better.