Hyundai Grandeur GN7 Car Audio Upgrade Review

Elevating the Sound Experience in Your Hyundai Grandeur GN7

Many drivers find themselves wishing for a more engaging audio experience during their commutes. If the factory sound system in your Hyundai Grandeur GN7 leaves something to be desired, a professional car audio upgrade can transform your cabin into a concert hall. This review details a recent sound system upgrade for the GN7, focusing on enhancing output and clarity.

Addressing the Stock Audio Limitations

The Grandeur GN7, especially models without the premium Bose option, often comes with a basic 4-channel audio system that lacks the power and fidelity for a truly immersive sound. This can result in a sound that feels muffled or lacks dynamic range. To overcome these limitations, the owner opted for a comprehensive sound system upgrade. The front doors were fitted with PHASS 170PL mid-woofer speakers, creating a 3-way front stage. The rear speakers were kept stock to maintain overall balance, but the focus was on dramatically improving the front soundstage.

Installation Process: Precision and Soundproofing

The installation began with the careful removal of the door panels. To ensure optimal speaker performance and longevity, extensive sound deadening was applied to the inner door panels using vibration-damping mats. Custom-made baffles from high-quality birch plywood were precisely crafted to securely mount the new PHASS mid-woofer speakers. This meticulous approach prevents speaker distortion and enhances durability. Foam baffling was also installed around the speaker mounts to create an airtight seal between the speaker and the door panel, contributing to a denser, more impactful sound. Even the rear doors, retaining stock speakers, received sound deadening treatment to improve resonance and reduce road noise, resulting in a fuller sound profile.

Component Selection and Final Sound Tuning

For the midrange frequencies, PHASS 88IG speakers were integrated into the A-pillar area. Utilizing genuine parts from Bose-equipped models, dummy covers were modified to seamlessly house the new speakers, maintaining a factory-like appearance. The high frequencies are handled by PHASS P25ES tweeters, installed in the original locations to preserve the stock look. This complete 3-way front system, combined with a Musway DSP amplifier, was then meticulously tuned. The Digital Signal Processor (DSP) allows for precise adjustments to equalization, time alignment, and crossovers, tailoring the sound to the specific acoustics of the Grandeur GN7's cabin. The result is a significant improvement: a clear, crisp, and powerful soundstage that dramatically enhances the listening experience, transforming previously dull audio into a vibrant and detailed soundscape.

The cost for such a comprehensive upgrade in Korea typically starts in the range of 1 million KRW (approximately $750 USD), with variations depending on the specific components chosen. While the initial investment is considerable, the transformation in sound quality offers a compelling value for audio enthusiasts.