I just finished installing a set of Alpine SPS-610C 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-610C woofers were mounted in the stock door locations using ¼” hardboard to adapt the stock oval hole to 5” round size needed. Making an adaptor was fairly simple – cut a 5” circle in ¼” hardboard, use an old speaker to trace the speaker shape centered on the circle hole you just made, make the final cut about ½” bigger than the speaker line and your template is done. Now make a second one for the other side. You can choose buy adaptor plates with the 5” hole precut. I mounted the SPS-610C tweeters high on the door panel through a trim plate that covers the side mirror mount by cutting a 2” round hole in the plastic. Alpine includes parts to mount the tweeters in a variety of ways including surface mount so you can put these little tweeters just about anywhere you want. Since I do not do this kind of work on a regular basis, installation took several hours because of the custom cutting required. SPS-610C speakers are connected to the head unit by running the stock speaker wire first to the woofer then connecting a second supplied wire, with built in crossover, from the woofer terminals to the tweeter. Alpine provides wiring and crossovers for the tweeter, but be aware that Alpine DOES NOT INCLUDE PIGTAILS to connect the woofer to your stock speaker wires. You will have to solder your own pigtails, which I chose to do, or buy one of the various stock speaker connector wires specific to your vehicle. I had to take one start off the Value category for Alpine being chincy. The stock rear speakers were also replaced with Alpine SPS-517 Coaxial 2-Way speakers. Alpine DOES include the pigtails to connect the SPS-517 speakers to the stock wiring. The sound created by these component speakers is a tremendous upgrade over stock even with the internal 16 watt per channel head unit. The SPS-610C component speakers provide a richer sound experience with better separation than a standard 2-way speaker. The woofers provide impressive low frequency sufficient to vibrate side view mirrors of the car at mild volume although nothing like the feel you would get from a dedicated subwoofer and amp combination. The performance of these speakers is excellent for the cost. Paired up with the SPS-517’s in the back 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.
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