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In-depth Analysis: How to Distinguish the Quality of Coaxial Speakers
2025-04-18
When upgrading car audio systems, coaxial speakers attract the attention of car owners due to their unique structure and affordable prices. However, with a wide variety of products in the market and uneven quality, learning to distinguish between good and bad speakers is of great significance for enhancing the auditory experience and improving the cost-effectiveness of the upgrade.
I. Distinguishing Performance through Key Parameters
(1) Frequency Response
High-quality coaxial speakers have a wide frequency response range. The low frequency can reach as low as 30 - 40Hz, and the high frequency can extend to about 20kHz. They can fully present rich audio, making the electronic music they play full of vitality. Conversely, speakers with a narrow frequency response have a dull sound, and a large number of details are lost.
(2) Sensitivity
Coaxial speakers with a sensitivity of 85 - 95dB are more ideal. High sensitivity means that a larger volume output can be obtained with a smaller power input. Under the limited power supply conditions of a car, it can efficiently utilize the power of the amplifier. When playing pop music, the singer's voice can be heard clearly.
(3) Rated Power
The rated power of mid-to-high-end coaxial speakers is mostly between 40 - 100W. An appropriate rated power ensures that the speaker can maintain good sound quality at different volume levels and will not be distorted due to power overload. For example, when playing rock music, a speaker with sufficient power can truly reproduce the strong drumbeats.
II. Exploring Quality through Appearance and Craftsmanship
(1) Diaphragm Material
The diaphragm has a great influence on the sound quality. The paper diaphragm has a natural timbre, the PP diaphragm has good rigidity and moisture resistance, and the wool diaphragm performs well in the mid and low frequencies. A high-quality diaphragm has a uniform texture and a soft and elastic edge. Otherwise, it is likely to lead to a decline in sound quality.
(2) Tweeter Unit
The tweeter units of high-quality coaxial speakers often use silk film and aluminum film diaphragms. The silk film tweeter has a soft sound, and the aluminum film has a fast high-frequency response. At the same time, an appropriate size and design ensure the propagation effect of the high frequency, allowing passengers in all positions in the car to enjoy clear high frequencies.
(3) Basket and Magnet
A sturdy metal basket can reduce resonance and distortion, and a powerful magnet provides a strong driving force for the diaphragm. Generally speaking, speakers with a large magnet volume and strong magnetism have better sound performance.
III. Determining the Quality Based on Sound Quality Performance
(1) Low-frequency Effect
When playing heavy bass music, high-quality coaxial speakers have a deep and powerful low frequency, with clear drumbeats and sufficient low-frequency extension. When playing electronic dance music, the rhythm is elastic, without being turbid or dilatory.
(2) High-frequency Effect
When playing classical violin music or the high-frequency parts of pop music, the tweeter units of high-quality speakers can accurately reproduce the details, with a clear, bright and transparent sound. When playing bel canto songs
