Cross-frequency speakers: Each box has two or more speakers, and each speaker is responsible for the sound output of the corresponding frequency range through the frequency divider. Treble is responsible for treble, midrange is responsible for midrange, and bass is responsible for bass.
1. Each unit works in a relatively narrow frequency area, and the requirements for the speaker unit are reduced. Conversely, the unit can play its best state in its dedicated frequency domain.
2. Due to the above-mentioned reasons, the frequency range of the whole box can be easily made wider. And the transient performance is also very good, which means that the power range of each unit's best sound performance is relatively wide.
There are also many disadvantages:
1. The consistency of the timbre is difficult to grasp, because the diaphragm material of the tweeter and woofer is usually different.
2. The phase distortion is large, which requires very high technology to reduce the phase distortion, but it is difficult to eliminate anyway.
Reason 1: Even if no crossover is used, the sound of multiple units cannot be completely consistent because of the material and size, so it is difficult to fully synchronize the sound.
Reason 2: The introduction of the frequency divider causes greater phase distortion and some other distortions. It takes time to charge and discharge the capacitor, and time is the most fundamental factor that causes phase distortion.
3. The frequency is difficult to connect naturally.
4. The sound waves generated between multiple units will inevitably have more or less sound wave interference.
5. The separation of the speaker unit positions makes it difficult to hear the full picture of the sound in near-field listening, perhaps with more high-pitched sounds and perhaps more low-pitched sounds.
Briefly summarize the characteristics of the two boxes:
1. Full frequency box: It has good sound quality, but it needs a high cost to obtain a wide range of frequency domain and transient.
2. Crossover box: You can get a wide range of frequency domain and transient performance at a low cost, but you also need to pay a high cost to achieve a good sound quality.
If there is a perfect full-range speaker, there seems to be no need for a crossover box. However, making a near-perfect full-range speaker seems harder than making a near-perfect crossover box.
The world is so contradictory. If you choose A, you are missing B. If you choose B, you are missing A. However, these contradictions happen to make everyone have fun and pursuit.