Alpine SPX-137R Car Component System

The Type-X speaker is the perfect choice for a high-end multi-channel sound system. These ultra-high performance component speakers have high power capabilities and long mid-bass excursion for more bass. What's really great about this speaker is that no matter where in the vehicle they're located, you get the maximum effect of it's quality. That's because they can be easily tuned for optimum performance using the Advanced Phase Correction and Off-Axis Adjustment functions built in the crossover network.