LM1875 同LM3886 我都有自己砌的，現在重用緊。要求唔高都算0K的。

訂咗 #868，如果音質唔滿意就砌 LM1875T，屋企有好多買幾咗拾年未用過的環牛。

https://www.alldatasheet.com/html-pdf/1570591/TI/LM1875T/27/1/LM1875T.html






最後修改時間: 2025-05-21 23:05:12

#873 + 1
相信而家個吊櫃+埋裡面啲嘢 ＞ 100kg。

iherbs 而家擴張得好快，昨天中午落單今午送上樓，以前美國貨倉出貨，后轉韓國倉出，后轉大碌國倉出，而家快到香港倉出。

最後修改時間: 2025-05-21 15:46:30

呢啲垃圾 D、T amp 唔值得俾錢多個 HK $100 連運費！！！

之前有網友話用膠塞上吊櫃唔穩陣，我呢個松木(啲木比較淋)吊櫃係 1999年10月 自己劃圖俾官塘 "特格" 安排國內廠製造的，送貨上門時我在大碌國上班，個送貨師傅同我老婆講擔心上落紅磚牆唔夠力，但係睇到我事前在背牆和右邊牆預裝的 "L" 形用來托住個吊櫃的支撑白木方就放心裝櫃了，到而家 26年仍沒變形和下墮。


最後修改時間: 2025-05-21 15:24:49

淘寶好多平class D amp. (Fosi, SMSL, Aiyima, etc.)，可以去睇睇。如吾係咩高音質要求，見佢地都呃到好多鬼佬，可以望下。

#869 電腦用的汽車 speaker姐係咩？

下面 Alpine 2路，係幾拾年前砌部 desktop PC 送給親戚放房用時加個 JBL integated amplifier(好似係 10W RMS x 2) 推對 Alpine (買個木箱 DIY 裝落去)，后來數年前見親戚冇再用拿回來自己接 PC，我之前有部高啲 model 的 JBL (唔記得 20 定 30W x 2)賣走咗。


#870 好怕一開機就pop一個
呢個 JBL 都有

之前係用 Audio Analogue 推 ATC SCM7 放床腳牆吊櫃，送咗比個仔后用了幾年 Creative 2路就轉用而家的 JBL (裡面用一粒估計係好舊款 IC amp chip)



最後修改時間: 2025-05-21 14:50:07

呢啲好怕一開機就pop一聲以為爆喇叭，同埋好多雜聲。

電腦用的汽車 speaker姐係咩？

呢款用 TDA7377







最後修改時間: 2025-05-21 13:54:06

可以買嗰個用 LA4625 的，再買粒 LA4628 換落去：

https://www.alldatasheet.com/datasheet-pdf/pdf/40131/SANYO/LA4625.html
Overview
The LA4625 is a 2-channel general-purpose BTL audio power amplifier provided in a miniature package. It was designed for the best possible audio quality and features an extended low band roll-off frequency provided by a newly-developed NF circuit that does not require an external capacitor. Furthermore, crosstalk, which can cause muddiness in the audio output, has been significantly reduced by both circuit and wiring pattern improvements. Thus this amplifier can provide powerful lows and clear highs.
Note that this device is pin compatible with the 20W×2-channel LA4628, and allows end products differentiated by their power rating to share the same printed circuit board.

Features
• Total output : 13.5W+13.5W (at VCC = 12V, RL = 4Ω, THD = 10%)
• PMPO reference data : 115W×2 (VCC = 20V, RL = 4Ω)
• High-fidelity design (fL ＜ 10Hz, fH = 130kHz)
• Extremely low impulse noise levels
• An arbitrary amplifier startup time can be set up with external components.
• Full complement of built-in protection circuits (includes circuits that protect against shorting to VCC, shorting to ground, load shorting, overvoltages and excessive temperatures)

https://www.mouser.com/datasheet/2/308/1/EN6632_D-2311021.pdf?srsltid=AfmBOoo-cZXv1AoFSjWgbwiF5yC82ukzkr8j-rvvdAjf-eWLtDyf9iKo
Overview
The LA4628 is a 2-channel general-purpose BTL audio power amplifier provided in a miniature package. It was
designed for the best possible audio quality and features an extended low band roll-off frequency provided by a
newly-developed NF circuit that does not require an external capacitor. Furthermore, crosstalk, which can cause
muddiness in the audio output, has been significantly reduced by both circuit and wiring pattern improvements. Thus
this amplifier can provide powerful lows and clear highs.
Note that this device is pin compatible with the 13.5W×2-channel LA4625, and allows end products differentiated by
their power rating to share the same printed circuit board.
Features
• Total output : 20W+20W (at VCC = 13.5V, RL = 4Ω, THD = 10%)
• High-fidelity design (fL ＜ 10Hz, fH = 130kHz)
• Extremely low impulse noise levels
• An arbitrary amplifier startup time can be set up with external components.
• Full complement of built-in protection circuits (includes circuits that protect against shorting to VCC, shorting to
ground, load shorting, overvoltages and excessive temperatures)


最後修改時間: 2025-05-21 11:47:58

想買部細 stereo amplifier 推電腦用的汽車 speaker，睇咗幾件細 size 的，如果冇睇錯，所供資料全部.....................作大，實則衹有：

AK270 用 TDA7057AQ (8W x 2)


呢個有好多版本，下面呢隻用 LA4625 (13.5W x 2)


AK170 用 TDA7266SA (7W x 2)


最後修改時間: 2025-05-21 11:08:26

我都有食開Q10，超過一年
一日都係100mg，唔敢食得多

鐵支架，手感唔錯！
如果冇睇錯，¥99 免運費的有些賣到¥8.9。


最後修改時間: 2025-05-16 14:17:20

今朝碰巧見到個冰箱温度下降到 -18 ℃ power 紅燈停壓縮機。


最後修改時間: 2025-05-15 13:26:54