DLHiFi Bass Treble 2Way Crossover Audio Board NE5532P Frequency Divider Crossover Filters For Audio Amplifier System

Electronic frequency division eliminates the insertion loss of frequency division. The so-called insertion loss refers to the part of the that is output by the amplifier, but cannot be transmitted to the speaker and converted into sound.
The traditional frequency division is also called LC frequency division. Its principle is to use the low-pass and high-pass characteristics of the inductor (L) and the capacitor (C) to prevent a part of the frequency signal from passing through a certain circuit, thereby completing the frequency division.
Electronic frequency division improves the damping coefficient of the speaker system. The damping coefficient reflects the ratio of the speaker impedance to the total impedance of the entire front-of-speaker circuit. The higher the damping coefficient, the more obvious the response of the change of the output signal of the amplifier to the speaker, that is to say, the higher the control of the amplifier to the speaker.
The frequency dividing components in the frequency dividing itself are all high-impedance components (for this reason, there be a large insertion loss), so the frequency dividing greatly increase the total impedance of the circuit. This reduces the controllability of the amplifier.
On the other hand, since the electronic frequency division does not have this stage of circuit, it has no adverse effect on the damping coefficient of the system. These two are the most important and obvious advantages of electronic frequency division.

The phase characteristics of electronic frequency division are better. In addition to the trouble caused by the internal resistance of the LC components of the divider, the phase effects brought by them as the phase components also need to be carefully considered when designing thepower frequency divider. For a speaker, at different frequencies, the phase situation of the tweeter and the frequency divider is very complicated. If the phase problem is not considered when designing the frequency divider and appropriate phase compensation is made, it is likely to cause Although the frequency division attenuation of the tweeter and woofer is perfect, due to the inconsistent phase of the two, the curve is uneven, and even a speaker with a but poor phase, the sound is often no phase problem, but the curve is not too good The ideal speaker is much harder to hear.
1. Filter Type: Subtractive Crossover
2. Crossover point: The crossover point is 3500HZ (that is, 20HZ-3.5KHZ is the bass output and 3.5KHZ-20KHZ is the treble output)
3. Attenuation slope: -24dB/Oct
4. Plate structure: 4-channel output, left and right treble output, left and right bass output, with treble volume potentiometer.
Note:Due to different factory batches, slight differences in appearance not affect usage.
Colour:Green
Material:Plastic

Package Contents:
1 * Crossover Audio Board

Only the above package content, other products are not included.
Note: Light reflection and different displays may cause the color of the item in the picture a little different from the thing. The measurement allowed error is +/- 1-3cm.