音響隔離牛製作班 - 第二班

因有多位會員要求再開音響隔離牛製作班

我們會在本星期五與膽後級原理及組裝班同時舉行

有意參加者請快報名

音響隔離牛製作班由經驗豐富, 具備註冊電業工程人員牌照的導師任教.
由電源理論, 製作技巧, 要點, 安全規則, 測試等等全面兼顧. 務求各學員除了可擁有一套自己製作的隔離牛之外, 當中亦可學到電源的基礎知識.

音響隔離牛規格:
2000VA 隔離環牛 (淨重36磅)
13A 輸出插座兩個
可選擇輸出100V,220V
17"x12"x5" 全鋁機箱
2.5mm 單支銅線2米
其他配件

製作班日期
2007年4月13日(星期五) 下午7:30至下午10時 或
2007年4月14日(星期六) 下午2:30至下午6時

地點
荃灣沙咀道29-35號科技中心9樓910室 (地圖)

收費
$2,600 (包全套基本套件)
$3,260 (升級版 - Isoclean 13A 鍍金座兩個, Iego鍍金IEC座, 4mm單支紫銅線2米)

報名請即到
http://shop.hififever.com/product_info.php?products_id=265
第一班評語

deaddog:
我今日已將modi兄砌的新隔離牛搬回家了，
如Deep Sea兄你所說聽少了很多......雜音，  
我聽了足足三個小時，我以前是用約二千圓的電源升頻器的，  
聽modi兄說嘗試用不同的接法去試，例如用隔離牛出再接電源升頻，結果是最差的。  
淨用升頻器就好長時間了，一直都覺得OK，今次淨用隔離牛，  哇有無攪錯啊！
我的器材整體又提升了10%，最起碼比我換一條線更明顯，  低頻真是實淨好多，
中高頻更靚聲，不過有一件事大家要注意的，就是用隔離牛大家唔好再用濾波或者其它電源處理器啊！  
如果唔係一定更差的，我的電源升頻器已放入床底了，唔知大家有無興趣買呢？  

Deep Sea:

聽少了很多野.................
...........轉歌時的電流聲失了踪  

Allen 多謝參與!!!!

我想問係唔係一定唔可以用美式頭呀? 我好有興趣呀~ 不過我全部電源線都係美式, 我又唔想加多個拖板, 又唔想用轉插, 有冇辦法呀?

Loklam, 謝謝, 已電郵資料給你

是2007年4月13日 (星期五) 還是 2007年4月14日(星期六)?

Sword23,
兩日任何一日都可以, 三至四小時應可完成

有 size 細一點的箱子嗎?

Sword23,  這是標準17"闊機箱, 高度剛剛好夠放隻2000va 牛(差不多5"高).

如你找到其他機箱合用我們可退回.

我有o的問題想問, 覆你email你覆唔到, 因為你個mail box爆左, 我有冇其他辦法可以直接聯絡到你呀?

收費
$2,600 (包全套基本套件)
$3,260 (升級版 - Isoclean 13A 鍍金座兩個, Iego鍍金IEC座, 4mm單支紫銅線2米)

Is that total fee = 2,600 + 3,260 = 5,860?

One more question, could we have one of the output using american style?

Thank you!

Loklam, Email  去 admin@hififever.com. 我有無限Quota

Detective Wong, only $3260... 包全套基本套件+Isoclean 13A 鍍金座兩個, Iego鍍金IEC座, 4mm單支紫銅線2米

Can I come late a bit, at about 2015 on friday?

Is there any carpark over there??

One more question, Can it always be switch on without periodical maintaince?
Thanks

kennytam, yes has carpark nearby.

coming late is no problem, you will have enough time

Yes, you can turn on/off frequently like us.

Thank you,

actually, I would like to ask is it saft to keep it as ALWAYS ON state 24hour? i.e. don't turn it off.

Thanks again

Yes, it is safe, you can treat it as a power distributor. You wont always turn off your power distributor, right?

Thank you again,
Last question, Can I have 3-4 output plugs, and can I relocate the ON/OFF switch to the back of the case?

I've just enrolled the course. Please confirm.
I will attend the class on Friday (13th April)

參加方法怎樣的?今天巳星期四...
小弟驚趕不到...
請快覆!
THX!!!

Sword23, Thx for joining
Jason, Thx for joining

Kennytam, you can add output plugs,  change the location etc, we'll give you an undrilled case

ming85508, 可到這報名. 報名後現場交款都可以..

http://shop.hififever.com/product_info.php?products_id=265

有個問題就是美式插可用嗎??

ming85508,  請收電郵

Kenny, thanks for joining!

[quote:cf5d5b88ed="Admin"]Sword23,  這是標準17"闊機箱, 高度剛剛好夠放隻2000va 牛(差不多5"高).

如你找到其他機箱合用我們可退回.[/quote]

我的櫃子不夠大, 可能要另找箱子.

1) 如果另找箱子, 有什麼要注意?
2) 你們提供的箱子是否已經開孔?

Sword23

機箱要放到5"高的牛,
牛闊大約10"

我們的機箱已開孔

is that the teaching materials will repeat on Sat. again (same as on Fri. night) ?
can i only attend on Sat. only ? can i catch up the teaching materials
as i don't know anything about electricity ?

alo, yes, it will be repeated on Sat. Please confirm when you will come as we need to prepare the kit for you.

sorry, I may ask a bit late ...

where is the 隔離牛 come from? (China? Taiwan?)
after pass thorugh the 隔離牛, whether any impact to the 頻寬?? any impact/ change to Watt ??

之前用過某牌子 filter (濾波) 覺得用咗之後高音 cut 咗 D, 低音又 cut D 不太適合, 唔之隔離牛特性如何.

請指教 Many Thanks!

[quote:588740cb52="Goldlightan"]sorry, I may ask a bit late ...

where is the 隔離牛 come from? (China? Taiwan?)
after pass thorugh the 隔離牛, whether any impact to the 頻寬?? any impact/ change to Watt ??

之前用過某牌子 filter (濾波) 覺得用咗之後高音 cut 咗 D, 低音又 cut D 不太適合, 唔之隔離牛特性如何.

請指教 Many Thanks![/quote]


在這裡我會答你的是隔離牛會比濾波好得多，其它的自己去感受吧，如果唔係又好似賣廣告吧！ :

Hi will there be any new class for 隔離牛?? When??? or Can I just order one........&  : where is the 隔離牛 come from?

hi happyman,

there will be another class of isolation transformer soon (probaby in Jan/Feb depends on no. of member interested to build one)

隻隔離牛不經不覺已經２４小時運作了一年，十分滿意。

因為搬了屋，新屋全屋都換了電線，有３組獨立32A電源，所以隻隔離牛從前在舊居是比 DAC 和 SRC 用，現在只供電給 Pre clock 和 Ref. clock 用。