Kennt jemand die chinesische Marke: Qin Chao Audio Systems?

Hallo,

ich wohne derzeit in China und habe einen Aktiv-Subwoofer gesucht.

Ich habe mir quasi blind einen Qin Chao BQ9115 bestellt - hoert sich nicht schlecht an, muss sich aber evtl. noch ein bisschen einspielen und ich muss noch mit dem EQ ein bisschen optimieren. 62kg hat das 15 Zoll Biest.

Was mich wunderte: es gibt quasi keine (nicht chinesischen) Internet Infos (Testbericht, Foren, etc.) zu der Marke.
Hat jemand mehr Quellen zu Infos zu Qin Chao / Qin Dynasty / Lao Qin?

Qin Chao Homepage

Yoycart

TaoBao

Google translated:
Old Qin since BQ9118 has developed a new BQ9115, 15-inch closed gun, weighing 120 kg, the price is nearly 8000.
Lao Qin's reputation seems to be good, the anti-burning Wang editor also recommended.
I like the feeling of the bass and the numbness of the bass. I want to add the BQ9115 to form a double gun on the basis of the existing BM14SII. There are two questions to consult with you:
1. Although these two are closed guns, can a 12 inch and a 15 inch match?
2. Can Dana's SLAVE OUT of the BM14 and the XLR IN of the BQ9115 be connected (see photo)? If you can connect, can you adjust the double gun at the same time through the BM14? Or does the BQ9115 only receive signals from the BM14, and the rest of the settings need to be adjusted by the BQ9115 itself? [attach]13983[/attach]
with 9115 research and development reasons: (looking vicious: lol)
BQ9118D that year is the ZUI nice subwoofer I have heard, the performance in the sound is absolutely first-class.
But he also has an obvious shortcoming, the power of the speaker is not big enough - 800W, just enough for a gun.
When the batch of AURA 18-inch units was used up, we have been trying to reach out to the manufacturers. Our appeal is to maintain the performance of the unit and increase the power to more than 1500W, but to come back and forth for nearly half a year of contact (the efficiency of the big factory is like this) High), the result we get is not only the power can not be improved, other performance can not be the same as before. . . Originally, I wanted to make BQ9118E, and my heart became cold and cold. It is also said that the domestic manufacturers are so large. Isn’t the two accessories made in the United States? Didn't the bankruptcy of the original factory? How big is it? Because this is not going to happen. . . Maybe it’s not at all. Maybe the root cause is that I speak Mandarin. We are small domestic companies that can’t be small. . .



I used to listen to BQ9118D, and then listened to BQ3115D. I feel that the gap is quite obvious. Without the 18-inch unit of AURA, the flagship gun BQ9118D can only be discontinued. We tried to find 18-inch units of other brands and also found the proofs of the manufacturers. Some, in the end, the gap between sound and performance is too obvious and gave up, can not get a good unit, can not reach the previous level, then we would rather not do, absolutely can not find a replacement because there is no product, so the follow-up of 9118D The product can only be postponed, and when the opportunity is mature, there is a way to go beyond the previous one and start the project. Sometimes I have to admire our users and friends. I remember a friend said, "If you don't engage in an 18-inch gun, you can't be an old Qin." I know too much about it, but I want to add that if I can't figure it out. More than the 9118D cow X 18-inch gun, I am not old Qin. But we need time to slowly absorb and improve, and we also need time to find a competent and interested supplier to respond. But this is really not a simple matter. It needs to be slowly tested and accumulated for a long time, but I am very confident to do it well.

BQ3115D is our most powerful gun at the moment. I think I can do better. I can't do it well in the short-term 18-inch. I can do 15-inch first, because of the experience of 15D speakers. Relatively speaking, it would be easier to get a completely inexperienced 18 inch. 9118E can't break through the technology, then let 9115, first make the ZUI 15 inch, so there is the idea of ​​9115, and the design goal of BQ9115 is "the sound is close to the effect of BQ9118D, the appearance is more beautiful. To achieve this the purpose efforts from the following aspects.
1, hi-fi still class AB amplifier circuit, and improve cannon maximum undistorted output power to 1000W, improve control over the speaker, improved sound clarity.
2, rich High interface playability, with 12V trigger, automatic standby, upper and lower frequency can be cut, high-pass frequency can be used for HIFI.
3, improve the performance of the speaker, increase the power of the speaker unit. Increase the stroke of the speaker unit, Increase the distance between the two plucks to reduce the distortion of the horn.
4. Evaluate the different diaphragm materials and find the most suitable combination, such as carbon fiber, glass fiber, paper, aluminum, aluminum paper composite, carbon fiber paper composite. . . . .
5, to evaluate the different magnetic circuit structure, this is confidential. . . .
6, different cabinet size and shape also need to be evaluated, even the sealing box of the power amplifier board is also to be compared, because this sealed box is not designed well, the original cow's call will be magnified many times. .

After many rounds of trial evaluations, it is very important that the development of the speaker unit has finally succeeded, and finally I have the sound and indicators I want. The magnetic circuit from different grades of ferrite materials, to different levels of NdFeB, from multi-granular NdFeB to a large NdFeB to elegant tile-like NdFeB. . . We have done a test comparison, and finally used a relatively high specification of three 22CM diameter ferrite magnetic circuits.

In my eyes, a good subwoofer speaker, first of all, the power is large enough, then the distortion is small enough, the reaction speed is fast, the sound should be natural and sound resistant. To achieve this goal, the diaphragm is a very important part. After many times of test and listening, the bottom of the pan-shaped sandwich structure composite carbon fiber basin diaphragm is selected. The diaphragm has high strength, is not easy to be deformed, and has moderate weight. At the beginning, we tested the material factory to provide aluminum-magnesium pots, composite paper pots, aluminum-paper composite pots and carbon fiber pots, which did not meet my requirements. Some indicators can not be satisfied with the sound; the sound can be, and the speed is somewhat slow. The carbon fiber basin can be used at a small volume, and the sound is mixed at a large volume. . . . I found that it was because the original carbon fiber basin was not enough steel. So I put forward a request for the material factory. Based on the carbon fiber basin, I made a pot myself. I want to improve the rigidity of the current carbon fiber basin, and keep the original low sound. . . . The next thing is that the supplier has solved it and tried it twice and twice. . . After that, the sandwich composite carbon fiber membrane that met my requirements was successfully born.

Gruss
Alex