音響小百科 - 300B容易燒？

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6 жыл бұрын

Пікірлер: 21

@samphat4781 Жыл бұрын

真多謝余師傅毋私咁講解令我受益不淺謝謝祝新年行大運心想事成生意興隆財源廣進

@tommyau4244 5 ай бұрын

My 300b have been working for 6 years, so far no problem 😊

@sparkieau1357 6 жыл бұрын

由頭到尾都係因為有高壓無徧壓,燈絲重熱.,屏流過大焼

@shumlung1948 Жыл бұрын

咁想請問余師傅，熄機嗰下仲有電流，咁點樣熄機先至係啱程序

@ckca7180 2 жыл бұрын

想請問美詩R100嘅300b容易燒嗎？

@danielpoon7366 6 жыл бұрын

請問膽是否要垂直放置？有人講存放膽(不論大細功率或前置膽)必須垂直存放，假若放置水平狀態太久膽會容易損壞? 我估計是燈絲或放气支架會因地心吸力時間表而變形所至。但有很多膽機計為了機身薄和美觀都將所有膽或部份膽平放，假如上述情況是正確應該膽會容易損壞, 再加上開機時有熱量更容易變形。小弟用Octave HP300設計膽都是平放 (其實市面有很多牌子膽機都在將膽平放設計-- 例如Luxman, Marantz等)，但用了近20年仍正常運作?請余師傳指教一下(解答)小弟疑問，謝。

@kontang6656 4 жыл бұрын

有祖國支援，洗乜驚！湖南曙光300B-98 平靚正！！！燒膽又可防。

@szeleungtam6647 Жыл бұрын

自給偏压咪安全的

@locmanw1583 4 жыл бұрын

Hi I have a new Cayin A-300b Mk II integrated. Why when I turn off amp I hear pop sound through my speakers?

@michaelhelgeland4588 4 жыл бұрын

Normal as long as it’s just a pop or two when you flip the switch off

@locmanw1583 4 жыл бұрын

@@michaelhelgeland4588 Yeah I found out from Cayin designer that's it's normal 😊

@fredflintstone8048 3 жыл бұрын

This is common sometimes on power down, power up, or both. It's the magnetic field in the output transformer/s collapsing when the DC power is either removed (turned off), or expanding when applied (turned on) to the primary windings.

@locmanw1583 3 жыл бұрын

@@fredflintstone8048 I figured out problem. If I don't use the -3db feedback switch pop sound is not there! Thanks ☺️

@fredflintstone8048 3 жыл бұрын

@@locmanw1583 That's interesting. Similar problem. Feedback usually comes from the secondary side of the output transformer and is fed back to the early amp stage. It sounds like that while you still had some voltages on the amp stages that the feedback signal during the collapse of the transformer field was fed back and amplified giving you the final 'pop'. Running without feedback can give you more power but usually at the expense of higher THD.