- #4010 [羅密歐], 24-04-23 15:23
- #4009 [Spong], 24-04-23 10:14細房組合
單端FU50 推街價$450老古董天朗Eclipse
老坑愛老媚娘 :-) - #4008 [Spong], 24-04-23 07:58又講番呢件cheap 嘢
先用大盾6j7G鋼屏,人聲帶microphonic,並不理想,且偏向中高頻;其實此乃膽本身基因問題而非作任何微調可以解決;
於是二話不說改用EF37A;問題解決了,這小管子推動力優異,音色是一貫Mullard 美艷動人。。。播老柴鋼一(Kissin 版本)完全冇趕收工感覺;而全程節奏包皮環境(緊臭);可聽性極高;
迼部單端cheap賃現在裝備可能是其中同欵一套*膽組合終極版本* -
- #4007 [johnnykmtang], 24-04-21 05:33Hello 伊雲士,
Switching mode power supply (SMPS) for tube amps are available at TaoBao and Ebay. I believe this is the way to go. However, there isn't many reports how they performs.
I believe the SWPS is the way to go. It just takes time to get it designed right for the tube amp application.
JOhnny - #4006 [WilliamsonAudio], 24-04-20 22:15#4004
我見過最瘋狂的shunt type regulator , 就是用211膽去做。
一支211做輸出膽。另一支211是為211輸出膽做穩壓。大約1250V 的高壓穏壓。
概念等同1 台845膽机,再加多一支845做高壓穏壓。 - #4005 [伊雲士], 24-04-20 20:50大陸有高手當胆机電腦咁玩用開闢電源
- #4004 [johnnykmtang], 24-04-20 20:27My friends asked me why the shunt regulator is better than the series linear regulators. I just found the following article from AudioXpress which has very detailed explanation.
https://audioxpress.com/article/shunt-or-not-looking-for-the-ultimate-audio-voltage-regulator
Johnny - #4003 [johnnykmtang], 24-04-19 21:26Mission 776 line amp
I built the 24V CCS-shunt regulator to replace the LM317 regulator in this line amp. It is a very simple design with few transistors. There's some improvement on the sound quality. It has fuller body, clean, dynamic and deep sound stage.
I used 120Vdc CCS-shunt in two of my tube line amp lately with great success too.
Johnny
最後修改時間: 2024-04-19 21:43:10 - #4002 [Spong], 24-04-19 08:08唔想傷害中國人民感情所以要等埋另外一隻轉插先至試另外一對網屏6j7及EF37A
^—^ - #4001 [Spong], 24-04-19 07:58非凡哥經典名曲
尾段一句老婆愈老愈可愛…唱得較*肉緊*而最尾呼喚飄紅姐姐亦有感性,
原來單端膽機升呢都係要借助(外國勢力) :-p - #4000 [Spong], 24-04-19 07:50冇*不愉快*意外發生
要播mono cd 比較左右聲道 - #3999 [Spong], 24-04-19 07:46^0^
- #3998 [Spong], 24-04-19 07:45收到第一隻轉插. 祖國貨造工唔錯
第一時間先試一支古董6j7 - #3997 [niceday009], 24-04-18 23:5445 SE......classic, I once visited a man in Taiwan who used 45 SE to drive Tannoy Westminster Royal
最後修改時間: 2024-04-18 23:55:11 - #3996 [johnnykmtang], 24-04-18 21:44My good old 45 SE mono amp back on stage.
The driver is 7N7 (loctal version of 6SN7)
1.5 watts rms only but very sweet sound. - #3995 [Spong], 24-04-15 11:37多謝各位提供寶貴意見
一於玩大啲,上淘宝買對6SJ7 轉EF37 插玩吓(小弟以前買落Mullard及GEC 各一對)
早幾日已經買咗對全新北京FU50$100亦改用U52 整流;
啲膽放庶冇用費事留嚟陪葬 :-( - #3994 [info2k], 24-04-15 11:12替代後微調工作點是必須的, 特性上兩個管子可以互換
最後修改時間: 2024-04-15 11:17:20 - #3993 [johnnykmtang], 24-04-15 10:49Drop in replacement.??? No No la.
Different tube would have its own characteristic. Dropping another type of tube will give you sound but it won't be working in the right operating condition.
Better not unless you know how to fine tune it after replacement of the tube.
Johnny - #3992 [info2k], 24-04-15 10:29#3991
網上及 Copilot AI 等, 有海量相關信息提供, 只要花點時間查證 - #3991 [Spong], 24-04-15 09:34多謝回覆
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