- #117 [新老手], 23-03-15 15:46
- #116 [RichardKBChan], 23-03-15 08:58replace by Sylvania 6SL7GT/VT229
- #115 [RichardKBChan], 23-03-15 08:42
頭關已經換上最好聲的6SL7/VT229, 又再進一步。
如果有其他R33會員師兄想來聽下真正的音色,
歡迎whatsapp 94662367安排時間,一齊研究下!
最後修改時間: 2023-03-15 08:44:17 -
- #114 [cat2013], 23-03-11 23:16唉!
- #113 [cat2013], 23-03-10 20:05
最後修改時間: 2023-03-10 20:16:31 - #112 [RichardKBChan], 23-03-10 12:35
When you order the output transformer, you have to tell the manufacturer about the
working voltage up to 2000Vdc, such that the insulation class requirement will be higher,
technically I do not see any difficulty.
Dr. Chan
最後修改時間: 2023-03-10 12:36:25 - #111 [cat2013], 23-03-09 21:54That is, the upper limit of AC voltage 1400v to 1500v is converted to DC and enters OUTPUT? Can the internal pressure bear it?
- #110 [RichardKBChan], 23-03-09 20:39
The best sounding for 833a 100w pure class A bias is 125mA at 2000Vdc B+ after audio testing.
Dr. Chan
最後修改時間: 2023-03-09 20:40:41 - #109 [RichardKBChan], 23-03-09 10:36Another useful 100W output pure class A single ended 833a schematic
- #108 [RichardKBChan], 23-03-08 16:15
Special Designed for 100watt single ended power output transformer
tailor made in Hong Kong by Poshan
Z5 Orient Hi-B Double C-cores
600VA 7.5K input, 4-8-16 ohm outputs
最後修改時間: 2023-03-08 16:15:47 - #107 [cat2013], 23-03-06 22:25歡迎, 歡迎! 各路師兄。。。討論!
- #106 [cat2013], 23-03-06 22:22唔好意思拿陳師兄圖獻給玩灑遊戲!
最後修改時間: 2023-03-06 22:31:27 - #105 [Cat2013], 23-03-06 13:51哦!! 謝謝!
- #104 [cshingyau], 23-03-06 13:38267B
- #103 [Cat2013], 23-03-06 11:06半波整流?
- #102 [we212], 23-03-05 13:45其中一对,分体电源
- #101 [we212], 23-03-05 13:27I have 3 pairs of different made 833a amps.
- #100 [cat2013], 23-03-03 22:08
[#82] 833A 后級
DIY 做好後會測試唔同的設定、有興趣可以一齊參與、估計兩星期內可以試聽後再微調
100watt 純甲SET 應該好好聲、我現時已經有50watt 212 SET和130watt KT170 push pull
可以即時比較一下唔同線路的音色
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師兄,沒有AC,DC,供電,電路圖怎樣能一齊參與呢? - #99 [cat2013], 23-03-02 21:52#98 師兄
請問可以提供詳細少少的電路圖呢?
益下本人及R33師兄弟啦!
謝謝! - #98 [RichardKBChan], 23-03-02 18:26This is the characteristic of this 833a tube,
best sounding around 2000V and 250mA - 下一頁 (2 of 7)
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另請教Dr.Chan師兄在#109的圖中,2A3的栅極沒有電阻落地,是否有特別含意?