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[#4654] Quad Amp CluB    

Thanks.

105/4 may be too demanding for 405. Kef loves power...........yes, you are right.

However, 105/4 is is relatively easier to drive than my other pair of speakers, the Spendor BC3.

I have used 606.........OK result.

Onkyo M-504 ...don't even mention it.

Biamping with two QSC PA Power AMP which with 600W Mono Power Class B..........just about to hear a little bit of pwerformance but no where near good.








fotheringay
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78.xxx.xxx.51
2025-10-31 23:37
[#4653] Quad Amp CluB    
Ching,

Your hifi sounds very good!

105/4 may be too demanding for 405. Kef loves power.

最後修改時間: 2025-10-31 23:18:07
Shungyan
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203.xxx.xxx.40
2025-10-31 23:17
[#4652] Quad Amp CluB    

The temporary 2A fuse innside the 606 couldn't do the job so I ordered some Bussmann fusees.

they arrived this afternoon so I tried the 606 again.

It has been running the whole evening so I guess it's OK now.

Keep fingers crossed.







fotheringay
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78.xxx.xxx.51
2025-10-31 05:38
[#4651] Quad Amp CluB    

Because of the faulty 606 I have to bring back the long-stored away 405 back in service.

I didn't enjoy it before but it was almost 7 years ago and perhaps it wasn't matching well with the preamp.

It seems pairing with the Elekit TU-8500 does bring the best out of the 405.















最後修改時間: 2025-10-31 05:54:02
fotheringay
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78.xxx.xxx.51
2025-10-31 05:35
[#4650] Quad Amp CluB    
All of them!!

If restricting to keep one pre and one power, then.......

33 + 303 will be the easiest to keep couple.

For power amp, 303 using cap output coupling which keep your speaker safe from DC current. And it seldom heard that there is problem on the transformer.

606 almost free from transformer shaking but only the first 2 versions sounds good. These 2 version using Dual C transformer which has some dampering material which ususally dried out on its age. You still need to take care of this if keeping one.

For preamp, indeed not much comment. Pick 33 because of 303. Just like 405, 405-2 pair with 44, 306 with 34, 66 with 606...

最後修改時間: 2025-10-29 21:08:18
Shungyan
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203.xxx.xxx.40
2025-10-29 20:57
[#4649] Quad Amp CluB    
各位師兄,我是Quad的新手。請問以下那一台值得收藏?

33,303,34,306,405,405-2, 606
vintagescott
個人訊息 會員
223.xxx.xxx.97
2025-10-26 20:44
[#4648] Quad Amp CluB    
小弟愚見 va one , 力水有限. 如果推啲細 db 嘅喇叭,但實唔夠力、太大聲嘅話又失真,啲聲會變得好悶死氣沉沉.
如果朋友有機嘅話,可試下聲先至再決定買唔買



最後修改時間: 2025-07-05 13:41:01
揀機肋
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182.xxx.xxx.40
2025-07-05 13:33
[#4647] Quad Amp CluB    
用VA-One+推YAMAHA NS1000X 可以嗎?

現在友人用美國古董(S字頭)EL84推挽合拼機推,聲音不錯



最後修改時間: 2025-07-04 16:07:42
BB1668
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112.xxx.xxx.65
2025-07-04 15:54
[#4646] Quad Amp CluB    
噉要了解電路先,唔咪換管就一定得,晶體管粒粒有偏差。
peter827
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182.xxx.xxx.18
2025-07-04 14:36
[#4645] Quad Amp CluB    
好似冇得調偏壓!
Ray1229
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14.xxx.xxx.84
2025-07-04 14:24
[#4644] Quad Amp CluB    
換晒同一批管會好啲,不過重點是懂得調校偏壓。
peter827
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182.xxx.xxx.67
2025-07-04 13:40
[#4643] Quad Amp CluB    
我想請教各位師兄,我剛剛在日本買了一部405,他是早期Toshiba 2SD424,我發覺一邊被人換了兩粒唔同牌子,我想換返Toshiba應該淨係換一邊兩粒,定係一次過換曬四粒好?請求解答?

最後修改時間: 2025-07-03 21:49:11
Ray1229
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218.xxx.xxx.251
2025-07-03 21:48
[#4642] Quad Amp CluB    
明白了,謝謝羅蜜歐師兄解答

最後修改時間: 2025-03-12 16:20:44
meiga
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168.xxx.xxx.15
2025-03-12 16:20
[#4641] Quad Amp CluB    
Quad44輸出端有一組電阻分壓,視乎你的訊源輸出大小,功放增益,喇叭靈敏度,聆聽習慣...一連串因素而定。理論上,插5V端子時訊號衰減(即損失)會較小,但如果聲音太大,就改插1.6V端子好了。

羅密歐
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14.xxx.xxx.44
2025-03-12 11:51
[#4640] Quad Amp CluB    
各位師兄好,想請教quad 44 前級,output 位分別有5V和1.6 V的,那應該插邊度,謝謝各位師兄解答

meiga
個人訊息 正式會員
182.xxx.xxx.12
2025-03-12 08:24
[#4639] Quad Amp CluB    
https://audiomuzeum.hu/wp-content/uploads/1970/1975%20Quad%20Current%20Dumping%20Amplifier%20405/Quad-405-405-2-Power-Amplifier-Review-Understated-Elegance.pdf

高原
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45.xxx.xxx.45
2025-02-15 13:59
[#4638] Quad Amp CluB    
405.2好似有喇叭保護系統、出直流電的話佢會中斷輸出、如有錯誤請各位師兄補充.405.2係一台好好嘅amp. 玩過不少於四五台、真係冇嘢壞.
q u a d舊 amp 除非牛震,否則維修很方便而且壞嘅機會很少

最後修改時間: 2025-02-15 13:21:40
揀機肋
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223.xxx.xxx.236
2025-02-15 13:16
[#4637] Quad Amp CluB    
hi all Quad users
does anyone know the difference between 405 and 405.2?
Thanks

最後修改時間: 2025-02-15 12:00:37
muzixman
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116.xxx.xxx.59
2025-02-15 11:57
[#4636] Quad Amp CluB    
一般復刻產物,都係有驅殼,冇
audiofan
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14.xxx.xxx.17
2024-10-23 06:53
[#4635] Quad Amp CluB    
期待復到405.2 power Amp
micromegamah
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49.xxx.xxx.80
2024-10-22 18:45
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