CAS+C50+275+Guaneri

willip

what power cord are you using?

willip

The Hi and Mid is getting better after 30 hrs.  Bass still needs a lot of time... Hopefully...

kenho

Dear 師兄,
very good 喎!! keep  on 煲仍有很大提升空間呢

willip

Ken sir, how long normally it takes for the bass to improve?

kenho

willip 發表於 2012-9-4 23:34
Ken sir, how long normally it takes for the bass to improve?

Dear 師兄,
一般標準 size 喇叭而言, 即 6" 低音  2 路分頻 , 或即 6" 低音  3 路分頻, 之類在 amp . power  100W(RMS) 左右的瓦數推動之下, 文火煲機每日四小時去計算, 大約在兩個星期後喇叭音色會有所進展 , 一般會是高和中音首先開聲, 低音就會比較遲一點的, 而亦視煲機軟件是否以中低頻為主項, 靈敏度高和效率高的類型較容易煲通開聲 , 快則一頭半個月, 慢則一年半載, 而若低靈敏度大咬一族的喇叭系統, 要煲上兩三年才有起色這是一點也不出奇 , 甚至有些大食喇叭因配上了功率不足花的擴音器, 到放二手時也是從未有煲通過、開過聲的。

willip

Hi, I mean the 275.  My Guaneri is fully run in.

thanks again.

kenho

willip 發表於 2012-9-5 12:45
Hi, I mean the 275.  My Guaneri is fully run in.

thanks again.

Dear 師兄,
MC275 來說,若每天 8 小時文火煲機,  是大約三四個月許 開始 run in, 至慢慢一路一路更好, 但亦需要視乎喇叭配合之情況, 若靈敏度高的一族會較易察覺成效, 當然膽管是有壽命上限的, 因此不如以平常使用當作煲機, 不然以通機碟煲機的話, 就白白浪費了寶貴的膽管生命了

willip

Thank Ken sir.
May I ask what is the life expectancy of the tube? And how much they cost?

iadwen

Dear Ken Sir,

有冇打錯數字? 8hrs per day; 3 to 4 months = at least 800hrs+ for run in

kenho

iadwen 發表於 2012-9-7 12:40
Dear Ken Sir,

有冇打錯數字? 8hrs per day; 3 to 4 months = at least 800hrs+ for run in  ...

Dear 師兄,
不錯的, 只是計數咁計, McIntosh 是沒問題的, 一般我們 Demo 機早段是每天 10 個小時的,  不過事實上真的有人煲機煲過夜的,  24 小時長開文火 ,  而小弟則見意平均每日四至五小時, 約煲個令月就足夠了, (當然膽煲得越耐會越好聲)
12AXT, 12AT7 一般壽命約 7~8 年, KT88 則較短 約 3~4 年壽命, 當然亦要配合其他條件因素, 如家居會否太潮濕, 會否有陽光直接曬著, 電源的供應質素如何....等等, 這亦會間接令膽管縮短壽命
McIntosh KT88  HK$1200.-/pc
McIntosh 12AX7/ 12AT7   HK$400.-/pc
以上膽管只供 McIntosh 舊有用戶訂購, 需先致電昇和影音的維修部, 核實訂購後到 Hi Fi Gallery 付款取貨。

willip

I guess my avg is just 2hrs a day. A bit more on weekend.... So....

kenho

So.... Dear 師兄努力、慢慢享受煲機提升的樂趣吧

willip

Still boiling, and seems the tonal balance keeps getting better but there is still much room for the bass (deep enough but not too tight).  

kenho

willip

Change the powercord of 275 to a DIY Airfloat pc made by Simon, the result is more focused and the bass is a bit more controlled but still not to the satisfactory level.

Will try a Kharma Ref on the C50 towards the weekend.

kenho

willip 發表於 2012-10-12 08:51
Change the powercord of 275 to a DIY Airfloat pc made by Simon, the result is more focused and the b ...

Dear 師兄,
說來感慨 , 小弟也曾為一名 DIY 的燒友, 說到 DIY 就是這情況, 很多時得一又會失一, 特別是一線之源的電源線, 它不單只是提供足夠的" Power "生命之源給器材使用 (電壓、電流), 還有電流的脈搏 (Hz), 都主宰了器材的工作質素與效率, 這三個元素是我們讀電子學時書本內早已載有的理論, 可是當再跑出書本, 了解了更多電子導體學上的相關知識, 才明白除先前的三大元素外還有很多很多能影響甚至改變電流電子特性的原理, 例如歐母定律、電子流慣性、電相與偏角論、幅射電感的容抗比率、干擾函數 .......還有很多很多, 在大型線材生產工廠裏, 這大埋函數理論一般都可以利用一些昂貴儀器與設備來作簡單的測量, 通常以這等的裝備, 要生產出完備的成品亦需花不少時間在 R & D 研究之上, 再通過不同之安全驗証才能推出市場, 這就是何解有的出名品牌的產品為何價格會如此驚人矣。
說來慚愧, 小弟第一次頓悟是在 80 年代, 當時身為卡式帶工廠的母帶錄音製作人, 基於工作的關系, 認識了雨果公司的老闆易先生, 大家大談 Hi Fi 經與電子理論, 當時電子工學畢業的小弟, 力撐質疑電源線的影響力非是重大, 其後易先生推出一張 "十大電源線的測試" 專輯, 並送了一張給小弟, 小弟反覆的聆聽, 再依其方法自行印証, 結果如同面上一下耳光, 打得啪啪響, 方是明白自己有多愚昧, 看事情的角度又太過單面。 因此, 往後日子再也不敢一概而論, 因為當越是了解, 就越發覺自己有所不足罷了。  

willip

Ken sir, fully understand your point.  I am an Electrical Engineer myself and I have fully believed in what cables can do to the system.  I also understand, R&D, marketing, branding cost so I fully support branded wires.

Having said that, for a new system, we all understand that trial and error is a must and that is why I first started with DIY (value is negligible) as well as famous brand wires to start with so that I will know exactly what I lack.

kenho

willip 發表於 2012-10-15 12:15
Ken sir, fully understand your point.  I am an Electrical Engineer myself and I have fully believed  ...

Dear 師兄,
十分同意呢, 雖說了長篇大道理, 不過小弟亦是十分提昌 DIY 的, 第一 . 其實很多高價知名音響品牌, 最初亦是源自 DIY 中的一個小概念, 第二 . DIY 是 "玩" 的意思為先, 不斷研究, 成功失敗也是樂趣無窮的 , 唯需小心電器上的安全使用, 只要玩得開心那就可以了    

willip

A few updates:

1) Added a Rega RP6 TT to connect to the C50 MM phono;
2) Added a Cambridge 650T to the C50 Tuner;
3) C50 power cord change to Kharma Supreme Reference;
4) 275 power cord change to Simonix Air Float;
5) Pre to Power Madison Extreme E3;
6) Speaker Cable stay with Yter.

Not sure if it is the cable selection or the nature during boiling, the mids and highs are very comfortable now but the bass is close to completely missing.

I do not put any feet on both machines (just put HRS plate on top of the transformer of both)

kenho

willip 發表於 2012-10-24 11:24
A few updates:

1) Added a Rega RP6 TT to connect to the C50 MM phono;

Dear 師兄,
低頻部份其實是較難調較的, 因為涉及太多不同類型的物理因素影響 , 如線材本身不利低頻屬減肥一族, 而又如落腳位諧振干擾、 房間駐波干擾底消、相差相減、迅間供電源峰值不足、瀘波電流不足, 甚至器材不匹配等等..... 也是導致沒有正常低頻效果之元凶所在, 就算任憑小弟三十多年鑽研 Hi Fi 經驗, 也不能紙上談兵, 得也必須實地測量按步就班的去慢慢解決。