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[#21] etsang3修復QUAD909 klbchan hing, However, when I got my ears close to the speakers, there was humming noise at a low volume which could only be heard in a very close distance. Is it normal? >> Normal. There is not a very decent regulator inside. By the way there was a pop sound coming from the speakers when I turned it on and off. Is it normal? >> There is Power-ON delay relay before the amp output so that pop sound is normal. That's one of the reasons of why good sound. |
etsang3![]() 202.xxx.xxx.193 |
2010-02-26 13:14 | |
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[#22] etsang3修復QUAD909 Hi Mr Tsang hing: 本人有部Quad909 Power-Amp 不知可因Power LED突然熄了, 但部機還有正常温度.但無了聲.請問可因!Thanks! |
austineming![]() 219.xxx.xxx.49 |
2010-02-26 13:30 |
[#23] etsang3修復QUAD909 可能是一邊(+57V 或-57V)供應出了問題。 |
etsang3![]() 61.xxx.xxx.242 |
2010-02-27 00:35 |
[#24] etsang3修復QUAD909 Hi Mr Tsang Your feedback comforted my soul indeed. I would like to know if a decent regulator is installed inside the power amplifier, will the low humming noise be unheard or eliminated altogether? Can you help me fix this problem? Or should I ignore it because of the design of the power amplifier? Now I hook it up with my Sim Audio P5. Is there any need to connect it with Quad 34 pre amplifier so as to maximise the full potential of the power amplifier? Many thanks! Your further comment and feedback are highly regarded. Kenny |
klbchan![]() 221.xxx.xxx.71 |
2010-02-27 17:10 |
[#25] etsang3修復QUAD909 Hi,曾sir, 我現想買後級,亦睇過本網站Quad後級用家的文章,對909 stereo後級甚感興趣,但好多網友對以往型號更讚賞,曾sir可否評論909與以前型號的分別,好等我們多加了解,先行謝過. 另我現用英國Ear 834L普通版前級,曾sir估計它們合拍嗎? |
WallaceK![]() 219.xxx.xxx.136 |
2010-02-27 19:13 |
[#26] etsang3修復QUAD909 最後修改時間: 2010-02-27 21:38:30 |
austineming![]() 219.xxx.xxx.124 |
2010-02-27 21:35 |
[#27] etsang3修復QUAD909 Hi Mr Tsang Sir: 兩邊(+57V 或-57V)供應電源部份check過.正常無問題。 近輸出接喇叭處在塊小形電路板是Quadlink部份有一對綠 黑線連接到Power LED現時是不亮.但部機還有正常温度. 這處連接到主機放大電路的訊號輸入這處.不知是否問題所 在.請看圖.Thanks! Tsang Sir:請問閣下有無這Quadlink部份電路圖! ![]() |
austineming![]() 219.xxx.xxx.124 |
2010-02-27 21:37 |
[#28] etsang3修復QUAD909 Tsang Sir:請問閣下有無這Quadlink部份電路圖! ![]() |
austineming![]() 219.xxx.xxx.124 |
2010-02-27 21:39 |
[#29] etsang3修復QUAD909 Quad Link 我Luck左佢, 因佢行埋RCA. 曾Sir, 909重有無得改正D??? 最後修改時間: 2010-02-27 21:53:51 |
davewong![]() 219.xxx.xxx.4 |
2010-02-27 21:53 |
[#30] etsang3修復QUAD909 這Quadlink部份圖! ![]() |
austineming![]() 219.xxx.xxx.124 |
2010-02-27 22:07 |
[#31] etsang3修復QUAD909 兩邊(+57V 或-57V)供應電源部份 ![]() |
austineming![]() 219.xxx.xxx.124 |
2010-02-27 22:10 |
[#32] etsang3修復QUAD909 austineming 兄,我上次本想(跟)了QUADLINK出來給大家分享,可惜沒又時間及想快快還機給機主(個多月了)。 你如果懷疑是QUADLINK板妨礙訊號到POWER AMP 板,可以直駁訊號輸入至POWER AMP板輸入(例如焊一RCA座在POWER AMP板板低作輸入),便可確定了。 |
etsang3![]() 61.xxx.xxx.242 |
2010-03-01 00:57 |
[#33] etsang3修復QUAD909 estang3 ching Salute! George1977 最後修改時間: 2010-03-01 11:05:31 |
george1977![]() 61.xxx.xxx.107 |
2010-03-01 11:04 |
[#34] etsang3修復QUAD909 曾 Sir, 如果想改 909 La Ba 輸出座, 用乜好? WBT得吾得? 因佢原裝個吾多方便, 用吾到叉!!! Thanks So Much |
davewong![]() 219.xxx.xxx.116 |
2010-03-01 11:45 |