Disassembling the Sony Ericsson speakers, this is a slap in the face!

okhxyyo

Disassembling the Sony Ericsson speakers, this is a slap in the face! [Copy link]

 

Yesterday I disassembled a "foreign trade leftover" speaker (article link: The speaker I bought on Xianyu for 18 yuan, is it a foreign trade leftover or... ). I also compared it with my own Sony Ericsson speaker to play the sound of "Left Hand Pointing to the Moon", and found that the sound quality is quite different. I thought that after all, it is a speaker worth more than 80 yuan, how can it be compared with a speaker worth 18 yuan.

Today, I suddenly felt like disassembling this one to see what the difference is between the two.

Before disassembling, let's take a look at the parameters. The model is SA-A2, the current is 600mA, the input voltage is 5V, and the product power is 6W. The input power is 3W, and the product power is 6W. I don't quite understand how this is achieved.

This thing is a pentagonal prism structure, and there are no screws on the outer shell.

Many speakers hide the screws under the grille, and this one is no exception.

The first time I removed the screws, I knew I had lost, and I had lost completely. If I paid 18 yuan for such a product, it would be useless. If I paid 80 yuan for such a product, it would be a complete loss!

I was not willing to give up, so I had to find some differences. This speaker has words printed on it. 4Ω 5W, it must be better than that "foreign trade tail goods" speaker. And there is more, I searched for several hours but couldn't find it.

The circuit board is single-sided.

I opened my small single-lidded eyes wide and looked for a long time before I could see clearly that the model of this chip is MIX3022. Let me check it out.

Yes, that's right, this audio amplifier seems to have better signal than the "foreign trade tail goods" audio amplifier, at least this is class D. MIX3022 is a 3Wx2 stereo class D audio amplifier chip. It can output 3W power on a 4Ω load.

Well, I finally got back two points. The speakers and audio amplifier chips of this 80 yuan speaker are slightly better than the "foreign trade tail goods". So the extra 64 yuan is worth it, and the number 64 is auspicious, after all, it is 2 to the sixth power, 66 is auspicious.

But now I want everyone to recommend me a better quality speaker. Remember, money is not a problem!

Author: Electronic Development Learning

Source: Electronic Development Learning

tagetage

Sony Ericsson is not a big brand, Sony is OK, for sound quality I like passive HIFI2.0 speakers.

maychang

[The model is SA-A2, the current is 600mA, the input voltage is 5V, and the product power is 6W. The input power is 3W, and the product power is 6W. I don’t quite understand how this is done. ]

The labels are randomly set to deceive laymen.

okhxyyo

tagetage posted on 2024-11-12 11:03 Sony Ericsson is not a big brand, Sony is OK, I like passive HIFI2.0 speakers for sound quality.

Sony Ericsson is a brand that is riding on the popularity

tagetage

Before disassembling, let's take a look at the parameters. The model is SA-A2, the current is 600mA, the input voltage is 5V, and the product power is 6W. The input power is 3W, and the product power is 6W. I don't quite understand how this is done. --------This is possible. The input power refers to the power of the USB power input 5V, 0.6A. The output power refers to the transient maximum power of the device. Because of the effect of the capacitor of the power supply in the circuit, the transient speaker may exceed 3W and reach 6W, so it is marked with a product power of 6W. . .

tagetage

maychang posted on 2024-11-12 11:03 [The model is SA-A2, the current is 600mA, the input voltage is 5V, and the product power is 6W. The input power is 3W, and the product power is 6W. I don’t quite understand how this is done...

Before disassembling, let's take a look at the parameters. The model is SA-A2, the current is 600mA, the input voltage is 5V, and the product power is 6W. The input power is 3W, and the product power is 6W. I don't quite understand how this is done. --------This is possible. The input power refers to the power of the USB power input 5V, 0.6A. The output power refers to the transient maximum power of the device. Because of the effect of the capacitor of the power supply in the circuit, the transient speaker may exceed 3W and reach 6W, so it is marked with a product power of 6W. . .

maychang

tagetage posted on 2024-11-12 12:24 Before disassembling, take a look at the parameters. The model is SA-A2, the current is 600mA, the input voltage is 5V, and the product power is 6W. The input power is 3W, the product power is 6W, I...

yes.

The speaker is 4 ohms and the power supply voltage is 5V. Theoretically, the instantaneous power can reach 6.25W, and two speakers are 12.5W.

But, is there an instantaneous power label? If you want to label the instantaneous power, why not label it as 12.5W? Wouldn't that look better?

chunyang

okhxyyo posted on 2024-11-12 12:04 Sony Ericsson is a brand that is riding on the popularity of the brand

In China, "Sony Ericsson" is abbreviated as "Sony Ericsson", but I don't know whether Sony has registered "Sony Ericsson". But one thing is certain: all brands directly marked with "Sony Ericsson" on the market are counterfeit goods.

hellokitty_bean

chunyang posted on 2024-11-17 23:02 In China, "Sony Ericsson" is referred to as "Sony Ericsson", but I don't know whether Sony has registered "Sony Ericsson"...

To what extent has Sony-Ericsson fallen? . . . . . . . . . .

It is no longer known to the younger generation.

okhxyyo

[quote]hellokitty_bean posted on 2024-11-18 09:08 Sony - Ericsson has fallen to such a low point. ...

No, no. There is a brand called Sony Ericsson on the Internet, which is a fake of Sony Ericsson. It is intentional. I saw an advertisement on TikTok some time ago, and I checked it at that time. It is not a brand. It is intentional.

hellokitty_bean

okhxyyo posted on 2024-11-18 10:13 No, no. There is a brand called Sony Ericsson on the Internet, which is a fake Sony Ericsson, intentionally. I saw an advertisement on Douyin some time ago, when...

Oh oh oh! This unscrupulous businessman, isn’t he afraid that Sony Ericsson will seek compensation from him? . . . . . . . .

But now Sony Ericsson has indeed been marginalized

okhxyyo

hellokitty_bean posted on 2024-11-18 14:11 Oh oh oh! This unscrupulous merchant, isn’t he afraid that Sony-Ericsson will seek compensation from him... But now Sony Ericsson has indeed been marginalized...

以前非智能机时代，索爱手机也很火啊。确实是落寞啦~还记得它以漂亮著称我第一次自己买手机就买的索爱的，当时啥都不懂，就觉得好看

hellokitty_bean

okhxyyo 发表于 2024-11-18 15:51 以前非智能机时代，索爱手机也很火啊。确实是落寞啦~还记得它以漂亮著称我第一次自己买手机就买的索爱的 ...

In the non-intelligent era, ordinary people who follow the crowd often choose Nokia, but you have a unique vision...

BTW,
I found that https://download.eeworld.com.cn/detail/toothache/634968 cannot be downloaded

okhxyyo

hellokitty_bean posted on 2024-11-19 09:06 In the non-intelligent era, ordinary people who follow the crowd often choose Nokia. You have a unique vision. BTW, I found https://downlo ...

Received. Received. Feedback immediately to the responsible colleague.

No, my first mobile phone was a Nokia. My aunt gave it to me as a reward for getting into the No. 1 Middle School in the county. After I got into college, Sony Ericsson became popular. I rewarded myself with it, so it was the first one I bought, but the second one I own.

It's quite interesting. My husband and I had the same model of mobile phones as our first two. I still have them as toys for my two kids, one for the older one and one for the younger one.

EE大学堂

hellokitty_bean posted on 2024-11-19 09:06 In the non-intelligent era, ordinary people who follow the crowd often choose Nokia. You have a unique vision. BTW, I found https://downlo ...

Hello, the technicians have made adjustments to the download problem you reported. Please try again.

hellokitty_bean

EE University Hall published on 2024-11-19 10:41 Hello, the technicians have made adjustments to the download problem you reported. Please try again.

Thank you, Brother Guan. It’s OK today.

hellokitty_bean

okhxyyo posted on 2024-11-19 10:22 Received it~~I will immediately feedback to the responsible colleague~~~ That's not it, my first mobile phone was a Nokia, my aunt rewarded me for getting into the county's No. 1 Middle School...

, the experience of growing up is a history of the changes in personal communication devices. . . . .

okhxyyo

[quote]hellokitty_bean posted on 2024-11-20 10:26 Thank you, Brother Guan. ...

That's good