decent speaker for the money should have a amp to fully appreciate the sound quality

These speakers are priced well and are worth the money. Great quality speaker and I would recommend them to anyone.

Got 4 of them on an alpine 4ch amp. Sounds amazing, getting 80w rms. Alpine headunit, Knukoncepts wiring.No distortion, not the BEST bass, but the mids.Vocals are absolutly beautiful

I have four of these hooked up to a Clarion amp running 90 rms and these speakers sound great. They don't distort at all even at max volume which with my setup is quite loud. They also sound very good when just powered by the deck.

These speakers went in to my 2001 Ranger. I previously had the SPS 507's for 6 years of abuse and they held up beautifully. I expect these speakers will hold up just as well.

I just finished installing a set of Alpine SPS-517 speakers in a 1995 Mustang convertible as replacements to the stock 5x7/6x8 “premium sound” Ford speakers. They are driven by a 16 watt per channel Alpine iDA-x303 head unit without an external amplifier.

The SPS-517s were mounted vertically in the stock rear speaker locations. After getting the top 2 screw holes to line up with this speaker, the bottom screw holes were off just enough to not fit nor allow for new holes. Thankfully, these speakers have extra tabs on each end which I was able to use after drilling a new hole through the stock bracket. The three screw mount is very solid. Alpine DOES include the pigtails to connect the SPS-517 speakers to the stock wiring or you can buy one of the various stock speaker connector wires specific to your vehicle and avoid splicing completely.

The stock front speakers were also replaced with Alpine SPS-610C Component speakers.

The sound created by the SPS-517 speakers is a tremendous upgrade over stock even with the internal 16 watt per channel head unit. The performance of these speakers is excellent for the cost. Paired up with the SPS-610C’s in the front there is ample sound to enjoy music on the highway with the top down. For a bit more oomph, an Alpine KTP-445 head unit amp would provide a clean 45 watts per channel. However, if you are considering a high power external amplifier for your car you should probably spring for a Type-R or Type-X speaker set instead of the Type-S.

Great High's! My treble is set a lot lower than with factory speakers. Could use some more low's/bass but for the price I can't complain. These replaced the front door speakers in my 2012 Mustang with the base stereo. Before, if I turned the stereo power up more than 1/3 of the way, I would get fuzz and bad distortion. Not anymore! I'm going to buy a second set for the rears very soon and maybe add a small sub to compliment the great high range these put out.

I have always trusted the Alpine name and they did not disappoint on these new SPS517 Speakers. Ordered four speakers w/ vehicle specific adaptors and arrived as promised from SE. They were no delivery issues.

The speaker adaptors for my 2008 F150 SC, made installation a snap (45 min), including removing and re-installing the rear door panels. They sound awesome w/ factory head unit.

Better all around sound quality than the stock paper speakers. The SPS 517 are tight on the lows and I am very pleased. I would recommend Sonic Electronix and these speakers, hands down!

Next upgrade planned: In-dash GPS, DVD Head unit, and a small sub.