BMW 3 Series G20 Speaker Upgrade Review: Symphony Audio

BMW 3 Series G20 Hi-Fi Loud System: Sound Quality Improvement Methods

Are you dissatisfied with the standard Hi-Fi Loud system in your BMW 3 Series G20? This is a common complaint among many owners. The basic audio system, despite its name, can often sound noisy and unfocused rather than crisp. The most effective solution is to replace the speakers with professional-grade components. Today's Car Busan, a specialist in BMW car audio tuning in the Busan region, has documented this process in detail. Here's a breakdown of a real-world case study.

Today's Car Busan: BMW Car Audio Specialists

Located in Dongnae-gu, Busan, Today's Car Busan boasts extensive experience in car audio tuning for BMW and other imported vehicles. They have a particular expertise in improving the sound systems of the G20 generation. Their approach focuses on significantly enhancing audio quality while utilizing the original wiring harnesses and mounting points.

Limitations of the BMW 3 Series G20 Stock Speakers

The G20's standard Hi-Fi Loud system typically includes seven speaker units (center, doors, under-seat woofers). However, in terms of sound quality, there are several drawbacks. The mid-range frequencies lack clarity, the overall sound can feel tinny, and the bass quality is often subpar. This is largely due to the use of standard plastic cones and weaker magnets in the stock speakers to cut costs. Consequently, they provide basic functionality rather than a premium listening experience.

Symphony Audio NATURE Lineup: Optimized for BMW 3 Series G20

Symphony Audio, an Italian brand renowned for its high-quality audio components, has recently launched its NATURE series specifically for BMW vehicles in the Korean market. This series is highly effective for improving the G20's sound system because it's designed with BMW's original connectors and installation spaces in mind.

Mid-Bass Unit: Achieving Solid Mid-Range Frequencies

The Symphony 4-inch mid-bass speaker features a carbon fiber cone and a neodymium magnet. The carbon fiber cone offers superior rigidity compared to standard paper cones, allowing for more precise response to audio signals. The neodymium magnet generates a stronger magnetic field, enabling finer control over the diaphragm's movement. This results in a noticeable increase in resolution compared to the stock speakers. When listening, you'll experience a richer and clearer mid-range, with distinct vocals and well-separated instrument sounds.

Tweeter: Smoothness and Detail in High Frequencies

Symphony's tweeters deliver a balanced yet high-resolution sound. They reproduce high frequencies without being harsh or fatiguing, while clearly conveying the subtle details in music. The stock G20 tweeters can often sound sharp and tiring, an issue that Symphony effectively resolves.

Woofer: Tight and Resonant-Free Bass

The Symphony NATURE 8 woofer utilizes a traditional paper cone, known for its ability to produce nuanced sound. Combined with a neodymium magnet, it creates a very tight bass response. User feedback indicates an improvement of over 80% in sound quality compared to the stock woofers. You can expect bass that is precise and tight, without the boomy resonance often found in factory systems.

BMW 3 Series G20 Actual Installation Process

Installation process:

1. Door Sound Deadening and Mid-Bass Replacement: The first step involves thorough sound deadening treatment of the inner door panels to reduce vibrations and road noise. Following this, the stock mid-bass speakers are carefully removed and replaced with the new Symphony units.
2. Tweeter Installation: The factory tweeters, typically located in the A-pillars or dashboard corners, are replaced with the Symphony tweeters. This ensures a cohesive soundstage and clear high-frequency reproduction.
3. Woofer Installation: The under-seat woofers are then swapped out for the Symphony NATURE 8 woofers. These are designed to fit seamlessly into the original mounting locations.
4. System Tuning: After all components are installed, a professional tuning process is conducted. This involves adjusting equalization (EQ) and time alignment settings to optimize the sound for the G20's cabin acoustics, ensuring a balanced and immersive listening experience.

The entire process, including sound deadening and tuning, typically takes between 4 to 6 hours, depending on the specific vehicle and any additional customizations requested.

Expected Costs and Installation Time

The cost for a full speaker upgrade using the Symphony NATURE series for the BMW 3 Series G20, including professional installation and tuning, generally ranges from 1,500,000 to 2,500,000 Korean Won (approximately $1100 - $1800 USD). The installation itself usually takes between 4 to 6 hours.

Sound Quality Changes After Installation

The transformation in sound quality is significant. The mid-range becomes much clearer and more detailed, allowing vocals and instruments to stand out. High frequencies are crisp without being piercing, and the bass is tight, punchy, and free from distortion. Overall, the listening experience is elevated from functional to truly enjoyable, making every drive more pleasant.