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Alpine recently raised the roof as far as custom aftermarket car stereo is concerned with the unveiling of the Alpine X009-GM. The 9-inch in-dash navigation system was purposely designed for the 2014 and up Chevrolet Silverado 1500 and the GMC Sierra. This radio replaces and substantially upgrades the factory unit and offers features not available in any vehicle trim as far as the Chevrolet Server auto and the GMC Sierra are concerned.

Alpine has announced a new custom speaker Creek kit specially designed and optimized to fit these trucks. If you’re not a fan, you’ll love both the radio and speaker kits if you’re not even an Alpine car stereo follower for life.
The new speaker kit part number SPT-31GM is a 3-Way Speaker System designed to fit the 2014-up Chevy Silverado or GMC Sierra (it is not compatible with models equipped with the Bose factory system).

The Alpine engineers must love GM trucks because this kit looks and sounds great. The SPT-31GM transforms the already pretty good-sounding truck’s speaker system from a 2-way to a 3-way system using 8-inch woofers for the front doors, 3-inch midrange speakers with 1-inch silk dome tweeters for the dash, and 6.5-inch coaxial speakers for the rear doors.

The speakers and tweeters are custom-fitted to the truck’s factory speaker locations. All the necessary hardware and mounting adapters are included in the kit; this includes custom angled tweeter brackets designed to deliver the best possible sound reproduction regardless of what music you listen to.

The SPT-31GM is not cheap cost-wise, but then again, how much is a factory car audio premium sound system for a GMC Denali? If you like Chevy trucks and want your music loud, claim this combination of custom fit, custom designed head unit, and speaker combination, guaranteed to yield the best performance ever. And in the event you want a little more punch! Nothing keeps you from adding an external amplifier or subwoofers to the system. The Alpine X009-GM comes with three sets of 4-Volt RCA, opening a whole new world of system options.

The Alpine SPT-31GM is a component speaker system that fits select GMC trucks. Whether it’s the “best” speaker for a GMC truck depends on various factors, including your personal preferences, budget, desired sound quality, and intended use. Here are some factors to consider when determining if the Alpine SPT-31GM is the right choice for your GMC truck:

1. Compatibility: The Alpine SPT-31GM is designed to fit specific GMC truck models. Before purchasing, please ensure it matches your vehicle’s make, model, and year. Compatibility is crucial to ensure proper fitment and functionality.
2. Sound Quality: Alpine is known for producing high-quality audio equipment, and the SPT-31GM is no exception. It features premium components such as silk dome tweeters and carbon fiber-reinforced plastic woofer cones, contributing to clear and accurate sound reproduction. However, good quality is subjective, so it’s essential to audition the speakers, if possible, to determine if they meet your expectations.
3. Installation: Consider the ease of installation of the Alpine SPT-31GM speakers. Are they plug-and-play replacements for the factory speakers, or do they require additional modifications or adapters? If you’re uncomfortable with DIY installation, could you factor in the cost of professional installation services?
4. Budget: The Alpine SPT-31GM speakers are typically priced in the mid to high range compared to other aftermarket speaker options. Consider whether the features and performance justify the price and fit within your budget. Remember to account for any additional installation costs if necessary.
5. Brand Reputation: Alpine is a well-respected brand in the car audio industry known for its quality products and innovation. Consider the brand’s reputation for reliability, customer support, and warranty coverage when evaluating the SPT-31GM speakers.
6. Other Options: While the Alpine SPT-31GM may be a suitable choice for your GMC truck, other aftermarket speaker options are available. Research and compare alternative brands and models to ensure you’re making an informed decision. Attention to power handling, sensitivity, frequency response, and build quality.

Whether the Alpine SPT-31GM is the best speaker for your GMC truck depends on your specific requirements and preferences. It’s essential to consider factors such as compatibility, sound quality, installation, budget, brand reputation, and alternative options before making a purchase decision. If possible, could you audition the speakers or seek advice from car audio professionals for personalized recommendations?