The sound quality of the speaker is affected by many factors

Low Frequency Response: Larger magnets may provide a stronger magnetic field, helping to better control the movement of the horn diaphragm, resulting in lower low frequency response. Therefore, the horn of 80mm magnetic steel may perform better in low frequency.

Heat dissipation and power handling: Larger magnets generally have a larger heat dissipation surface, which may help improve the power handling capabilities of the horn. This means that the horn with 80mm magnetic steel may be more stable at high volume or high power.

Detail rendering: Larger magnets may help the speaker provide better detail rendering in the high frequency range, because it can affect the movement of the diaphragm and affect the accuracy of high frequencies.

Size and weight: 80mm magnetic steel horns may be larger and heavier, which may affect the flexibility of installation and arrangement. Larger sizes may require more space.

It should be pointed out that the size of the magnetic steel is only one of the factors that affect the sound quality of the speaker. Other factors, such as diaphragm material, drive unit design, cabinet design, crossover frequency, etc., will also have an important impact on the final sound quality. The final sound quality is the result of the interaction of these factors.

When choosing a speaker, in addition to the size of the magnet, you should also consider your music preferences, listening environment, budget, and other technical specifications. The best way to do this is to do actual auditions and comparisons before buying to make sure that the speakers you choose will meet your needs and expectations.