#1379請問你部line3有沒有換膽
我剛剛換了兩支6GH8A同兩支6922
後面8支還未換，請問那八支影響聲音大嗎？

My SFC-1 is still with me, not often used in the last few years. But no regrets. No matter what type of tube rolling, A2900, long plate Mullard 12AU7, metal collar EL34, the sound was about the same. The output Hammond transformers might need to be replaced, 5k, 40-50W,＞120ma but the ones from Japan are too pricey, around $7000/pair, not for experiment purpose, considering the present value of the amp as well. Maybe Lundhal ones but the wirings were a bit tricky.(same trannies suitable for pp or se) Maybe, solder the wiring first with transformers alone, check insulation to earth and across windings, a few voltage ac across secondary and measure primary voltage and determine the turns ratio/impedance. Burning transformers upon powering up is no fun.

最後修改時間: 2021-02-14 07:03:00

一路仲用緊SF Line3 同 Power3

昨日睇返以前的分享，見到用彈弓承機
睇嚟應該幾好聲又唔貴，唔知邊度有得買？

膽我唔熟嘅，點講好呀

唔好玩我先真，你都算新手就

唔好玩我啦，我都係新手一名

閣下喜歡咪接手黎做嘍，應該唔難，除非唔係。

咁大鑊，我點算好

恭喜師兄！可惜SF「會頭」已轉咗會，再冇人定期放毒了！

最後修改時間: 2021-02-01 09:49:56

新人報到

請問SFS40有D..D..聲由喇叭傳出是什麼問題?

Thanks
找天試試

Perfectgrade hing, 我曾用40推3/5A，11 及15ohm,效果滿意，以前sf 代理都係用3/5A作demon.

請問：有師兄用緊SFS-50? 我部fuse 燒左（T 2A L 250V. ),可以換入T 5A 250V銀嗎？

請問各位師兄, 有冇SFS-50嘅電路圖可以分享 謝謝

Thank you sirs

#1362 如下。

調power two bias 用小一字批插調bias小孔左右旋轉， 睇「燈仔」顏色就得喇！

最後修改時間: 2018-04-22 21:38:18

請問有冇師兄
仍記得如何調power two bias
Thanks