The bookshelf of Shiba Inu speakers, the king of speakers-Extreme

This is a reference two-way speaker developed in two years. Produced in 199 1, the speaker structure has been patented. From the front, Extrema is made of nine pieces of solid wood, showing a unique three-dimensional shape, and the inner box is an irregular space, which effectively controls the resonance of the inner box when the unit sounds. Extrema's 6 dB separator network, with the intersection set at 2kHz, is a breakthrough design direction. This is a Qualcomm splitter without capacitor. In addition to the original sound box made of solid wood and the sound separator without capacitor but with radiator, Extrema is also equipped with a wave diffuser "passive radiator" that emits backward. This is a 9-inch×13-inch KEF B 139 unit with five buffer control circuits. This is a very effective design. The passive diffuser forms a back load behind the speaker, so that the sound response effect is the same at all positions behind the speaker. Capacitor-free sound insulation structure is to connect a coil in parallel on the high-pitched signal channel, eliminating the general series capacitor. If the general LC partials are collectively called CAP, then the circuit of 1st order parallel coil registered by Sonus Faber is called SINECAP. The capacitive sound isolator invented by Sonus Faber is indeed a breakthrough in the history of sound, which revolutionizes the production of loudspeaker sound insulation net, and can completely improve transient, reduce phase distortion and improve buffering. The units used in Extrema are customized according to the specific specifications of Skanning Audio and Dynaudio, and only provided to Sonus Faber. The high-pitched unit Q value of 1 inch diaphragm is lower than 0.2, the voice coil resonance is as low as 500 Hz, and the mid-bass unit is 190 mm PP disk. After being coated with carbon plastic, the disc was split and pushed out of the hearing range. The diameter of the voice coil was 75 mm, the resonance point of the passive diffuser was 35 Hz, Extrema, with five buffers. It was once the king of bookshelf speakers, and its strong sound pressure was enough to make the earth shake, which also made other speakers who claimed to be huge bow down.