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標題: Constructing my 300B / 砌部300B [打印本頁]

作者: alfcat 時間: 2009-7-4 21:18
標題: Constructing my 300B / 砌部300B
I always wanted to DIY a 300B .....

No time, No money and hard to get a pair of decent 300B tubes.

With the release of the new re-issue Chinese 4300B tubes, I finally make up my mind to try DIY one 300B for myself.

This is actually the busy season; lots of exam scripts to mark and lots of post exam activities to do. Anyway, life is a mess without leisure. I am in no hurry, so I will do it step by step.

夢想了好耐砌一部300B, 無奈人又老錢又無 ...

加上買一對好的西電300B重貴過砌部機 .... 結果一路都係得個"恨"字 ....

最近桂光重做4300B, 自己聽過, 發覺這個價錢實在很大眾化, 於是決心開功 ... 試佢一試.

其實這陣子都幾忙, 只好忙裡偷閒, 一邊改吓卷, 一邊砌吓機. 唔覺唔覺, 改完晒卷, 都砌了 1/4 部機.

作者: modi 時間: 2009-7-5 21:03
Tango輸出牛用30W那隻會好很多呢！
而電壓只得350是有些不足，但還可以。

作者: alfcat 時間: 2009-7-5 23:11
Modi Sir,

好耐無見. 唔知你 d 蝦仔生到第幾代?

我都知30W會好d, 不過無 $$$$, 無計啦 ....

:

這部機都是試驗性. 遲d有錢再轉行 Mono Blocks

CAT

作者: alfcat 時間: 2009-7-8 12:46
忙了一天, 可以偷雞半日, 又番來砌吓機. 不過玩一陣都覺幾累. 只因前晚趕預備個 presentation, 結果唔夠瞓 ....

Been busy whole Monday and half day of Tues. Took a half day break and continue my work on the 300B. Unfortunately, not able to do much as really exhausted the night before, preparing for the presentation ... sigh

作者: alfcat 時間: 2009-7-14 23:24
Finally have it done !!

:

終於砌完了. 哈哈, 好開心 ..... 有歌聽了.

作者: alfcat 時間: 2009-8-29 12:35
After trying using a hum port to cut down the hum noise, I finally switch to DC filament.

First impression --- seems something is missing (and I am not talking about the hum). It looks like the Contrast is a bit less than before.

玩完 hum port 之後, 最終都係要試埋 DC 點燈. 好靜 ... 但好似比對少了少少. 試真 d 先.

作者: suitun 時間: 2013-3-27 22:43
口水一地啊

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