Pre-stage electronic three-way board Linquez-Rayleigh crossover 3-way divider

Description

The circuit can be designed according to the crossover point of the customer's needs.The default
crossover-point is 310HZ/3.1KHz.
A class of power supply pre-stage electronic three-way board circuit introduction:
The crossover board is designed according to the design of American ESP company. It is set to stereo 6-channel output structure, input stereo left and right channel signals, and output 6-channel signals, which are divided into left high, left and right treble, right bass and left middle. , right midrange, can directly push the 6-channel power amplifier circuit.
Highlights of this crossover board:
1.
Excellent crossover circuit
2.
c
rossover
frequency without peaks and valleys
3.
crossover point convenient setting
4.
6 channel output independent adjustment
5.
enthusiast design and production
6.
perfect reproduction of the original sound color
The best class A power supply for op amp power supply sampling is much more delicate than the LM317 337 78XX series power supply. The circuit comes with 4 times of preamp gain amplification. Please report if you want to change the preamplifier.
According to the different crossover points, we calculate the resistance capacitance parameters. The capacitance specifications will be different from the pictures at different frequencies. Please note
The crossover board consists of the famous Linkwitz-Riley filter. Linkwitz-Riley filters are mainly used in active filter circuits, such as many sophisticated multi-channel electronic crossover systems, which feature up to a fourth-order attenuation slope, in other words, every second At an octave frequency, the sound attenuates 24 dB of energy, ie the attenuation slope is -24 dB/Oct (Oct is Octave, an octave). At the same time, the Linkwitz-Riley filter has a very flat phase response over the entire audio segment (20Hz-20kHz), which is far superior to the Butterworth filter. After the signal passes through the filter, it does not cause phase distortion. Recommended by audio enthusiasts.
The main technical parameters:
1, filter type: Linkwitz-Riley filter
2, crossover point: 310HZ/3.1KHZ (ie 20HZ-310HZ for the bass output 310-3.1KHZ for the midrange output 3100-20KHZ for the high-pitched output) crossover point can be customized for other frequencies (free custom) the best score for different speakers The frequency is not the same, you can give me the crossover point, I will help you calculate the parameters of the circuit and then release it.
3. Attenuation slope: -24dB/Oct
4, plate structure: 6-channel output, treble, bass, midrange
5, op amp chip: JRC's double precision NE5532 (of course, according to customer needs to replace other op amps such as: OPA2604AU OP275G TL072, etc.)
7, board dimensions: 173 * 79mm
8, AC transformer power supply range double 14 to double 19V
9, connector: audio input / crossover output ----2 gold-plated lotus socket *4