Choose a large-size transformer (diameter 13 cm or more) and a filter capacitor of more than 20000 microfarads, and the high power is basically guaranteed; It is best to use Toshiba (Sweet Warm Tone) and Sanken (Leng Yan Strong Tone) high-power tubes for the back stage tube, and it is best to have a horn protection circuit (with two relays). It doesn't matter whether it is a famous brand or not, because famous brands are more expensive. As long as the above items are good components, the sound and power can be basically guaranteed. )
If you are an audio enthusiast and want the best sound quality, you can choose a class A amplifier which is several times more expensive. That sound is comparable to that of the electronic tube power amplifier, and its overall performance is much better than that of the electronic tube power amplifier (the electronic tube is an old technology decades ago, not as advanced as the transistor technology).
2. Speaker selection: it must be a well-known brand! Because there are basically no parameters for brand speakers, we don't know the frequency range. There are many famous brand speakers in China: Silver Flute, Blue Whale, Le Fei, Suowei and hivi. . They are all first-class speakers, so choose a speaker with an impedance of 8 ohms to match the power amplifier (a 5 ohm speaker is louder than an 8 ohm speaker, but almost as big as a 4 ohm speaker, so don't think it's good to be big, that's the impedance factor, the impedance is small and the output sound is big); It is best to choose a lower parameter FO (lowest resonance frequency)-a good horn is small in size, but the subwoofer parameters are good. 6, 8 inches as long as there are 38, 35HZ subwoofers, 10, 12 inches have 30, 25HZ subwoofer parameters to choose from. (The horn power should be below 100W, because the horn power is large, so the power amplifier needs to be larger than the horn power, and the sound is good; 200W*2 power amplifier is twice as expensive as 100W*2, and the speaker power is high, which is basically a waste of resources).
3. Speaker production: There is a great relationship between the size of the speaker and the speaker. The bigger the speaker, the louder the volume of the speaker (Baidu knows about the size of the speaker, you can search it). If there is not enough speaker space, the speaker will not have the lowest resonance frequency! Because the lowest sound is the spatial resonance between the speakers, not the speakers themselves-you put a bare speaker on the table, and without the speaker, you can hardly hear the bass.
(It's not that the speaker doesn't have bass, it's that there is no sound box to make it emit ultra-bass-baffle principle)