I think your idea is very good! I admire the DIY spirit. To tell you the truth, I am the kind of advocate who wants to have a fever in his mind, but the funds are too tight to put it into practice. ......
I think there are several difficulties in realizing your idea:
1, there is no need to say more about the problem of funds. ...
2. The "audio craze" in Shijiazhuang always feels that there is no market, so the related accessories market is not very good. Taihe Electronic City basically does not sell audio accessories. Xinhua Bazaar Electronic City has many accessories, but the quality and quality are too poor. The original "National Electronic Products Exhibition Center" on the west side of Northland Mall has some good quality electronic components.
3, the corresponding technical support problem I don't know what level the landlord has reached except for years of fever experience. A complete high-quality sound system actually reflects the highest level of a country in various scientific fields. R&D, component manufacturing, circuit design and assembly all reflect its scientific and technological content ... Hehe ... It's too far from the point.
In a word, I think it is unrealistic for individuals to build a top-level "fever system". Only by your own perception of sound can you make your favorite masterpiece!
My suggestion is:
1, there is no need to set so many intersections. At the level of HiFi, there are many successful examples of passive frequency division, but few examples of triple frequency division. In addition, I don't think it is necessary to set up active division by four. In addition, too many power amplifier channels will cause problems such as difficult volume adjustment and reduced signal-to-noise ratio.
2. Shielding and isolation of power supply, operational amplifier, current amplifier and screen display circuit must be done well. Therefore, it is necessary to make an electrical appliance bracket and shell with appropriate size and beautiful appearance, and do a good job of heat dissipation.
3, tuning. Sound quality depends largely on the level of calibration, which is the same as the calibration of musical instruments. It is also an instrument made of excellent wood and strings. Without the correction of the master, the timbre is different! This involves the setting of frequency division point, the size and shape of box, the type and thickness of sound-absorbing cotton, the position and size of inverter port and so on.