發燒活動 : HIMEDIA HD100, HD8-TH demo show

Date : 18-Apr-2009, 2:00-6:00pm (己結束)
24-Apr-2009, Friday 8:00pm-10:30PM (己結束)

地點: 荃灣沙咀道29-35號科技中心9樓910室

Too much enquirly.....to have a better result, only 12 seats / sesson.
Sesson 1 : 8:00pm-9:00pm
Sesson 2 : 9:00pm-10:00pm
Sesson 3 : 10:00pm - 11:00pm.

Please register at here (follow this post), seats reserve for register people.

今次己準備三部機:
一部全改
一部無改 (Modi Sir 自用的)
另外有個上次星期六試過機的朋友話帶部三星Blu-Ray機來比比

不用帶機上來了, 但要集齊二部機會不大了, 因Modi那部要摩了



說明:
HiFiFever 不設售買 HiMedia Media box. 如欲購買,查詢其功能, 請先聯絡該代理商
金河國際貿易有限公司
九龍 深水步欽州街 65號 榮業商業大嵆 4/F 403室
(新高登對面馬路 公廁旁) (近嘉頓)
TEL:2728 0411 余先生

正都電腦中心有限公司 (推薦, 可靠之零售點)
九龍 深水步 福華街 146號 黃金電腦商場地庫 49號舖
TEL:2361 3268 產品/銷售經理 布先生

此次活動並沒有與代理商存有任何買機優惠,沒有與代理商及零售商合作此活動,代理商及零售商是沒有已摩改的Mediabox 售賣的

Switching mode power supply modification:

Change the unknown brand Schottky diode to ON-SEMI.

5V section:
OLD : MBR10100 (10A,100V unknown brand)
New : MBR20100 (20A,100V ON-SEMI)

12V section:
OLD : MBR10150 (10A,150V unknown brand)
New : MBR20150 (20A,150V ON-SEMI)

Lower heat dissipation from diode.

Switching mode power supply modification PART II

Change the Fairchild 10N60 to Infineon CoolMOS 11N60.

Just 1A rating more than Fairchild, Infineon coolmos RDS is much much lower than Fairchild

Result --> Cool (Not too hot than previous)

20-Apr update:
Infineon IPA6R125  600V / RDS on = 0.125 ohm, (25A)
Infineon SPA07N60C3   600V / RDS on = 0.6ohm (7A), still better than default one.
Infineon IPP6R299  600V / RDS on = 0.299ohm, (11A)

Testing material: (18-Apr)

蜜蜂電影
功夫熊貓
22世紀殺人網絡2
蔡琴2007歌曲香港演唱會
Andrea.Bocelli.Vivere.Live.In.Tuscany
鄭秀文ShowMi 2007演唱會
夏韶聲 Live 2007
蝙蝠俠前傳2-黑夜之神
陳慧琳演唱會2008
蔡琴金聲演奏 2007
李克勤演奏廳 2

WAV file:
What a difference aday made @ 44.1/16
What a difference aday made @ 44.1/24
Testing the output using AV amp DAC and Pure 24/192 Cirrus Logic CS43122 DAC.

Heatsink

Sam,

一部可播放高清檔案(BDMV, TS, MKV, etc..)及可接收地面高清廣播的播放機

當然係比較摩改前後的分別

到時見


Fever令你滅亡, 必先令你瘋狂

We will announce at this Friday. First modifcation class will reserve for people who is coming to the show.

Aggressive price will be announce at Friday.

Sorry, the ans is NO.

That two machine will send to HDAV to do the AB comparision with their AV amp and TV.

May be, I can ask Yuki to have openday test..........

THX

Additional work on heatsink.

32'C at 1 HDD full load. (Room temperature 25'C)

TPBEAR,

See u at Friday.

THX, Z11

As you like

Comment on DSIX circuit:

I am the first time to put this circuit on Dolby Digital / DTS output. The feeling is, all of the "information" is increase and depth. Look like DTS HDMA.

You can try this experience at tonight. Also you can compare the default Digital output VS DSIX digital output.

THX

咩 plan 都無所謂, 最重要玩得開心, 學到野
請不要在代理及零售店提問有關改機前後之分別, 你會得到令你 "驚喜" 的答案

所謂原廠和所謂代理跟本不重視此機最大致命傷, 散熱問題.

太熱 --> 零件老化 --> HDD 短命 --> 破財
太熱 --> 零件老化 --> 電源著火 -->人命

我們目標 --> 32'C @ 1 HDD full load. (已達到)


Plan A 俾budget 吾夠但又想馬上有立扞見影的效果,

Plan B 會建立於 Plan A 之上, 對電源做升級.

Plan C 係對成部機重新評估, debug and improve. 再加改良, 你們作晚所見的Plan C機不是最終形態. (但己令同default相距什大)

Plan D 會建立於 Plan C 之上, 係俾D追求終極品味人仕使用, 解碼部份用獨立R-CORE + LT1085原裝 供電, S/PDIF Coaxial 用 DSIX 線路

Plan E 會建立於 Plan D 之上, HDD 用獨立R-CORE + LT1085原裝 供電, 解碼部份用獨立R-CORE + LT1085原裝 供電, S/PDIF Coaxial 輸出用 DSIX 線路. (專門導人升仙)

Q&A:
Q1. 明明我是用 HDMI出聲音, 點解要攪DSIX線路 在S/PDIF Coaxial輸出?
A1. 因為俾你駁 External DAC, (e.g. AD1955, CS43122, PCM1792, TDA1541) 聽歌用, 有些AV amp 內建的DAC是很差的.

Q2. Very interested in your new toy! Can I use Himedia H100 as an external DAC to play the WAV files in my computer i.e.
like the Cambridge or Nuforce DAC and using USB as a link?
A2. This machine is from himedia, please check the function from HK distributor. 金河國際貿易有限公司
九龍 深水步欽州街 65號 榮業商業大嵆 4/F 403室
TEL:2728 0411 余先生.
The Digital audio signal is output via "S/PDIF"(Optical/coaxial) or HDMI port only. The USB port cannot output audio signal.

1-2- May

10:00AM to 10:00PM, 2 days.

Min = 8 people. Max = 14 people.

admin will annouce this at today.

All,

HD100/8 DIY course : 1-2 May 10:00-22:00 (2 days)

Min quota : 8, Max quota : 14

HD100/8/MTV3000/5000/EIGHT/ upgrade by KK:
Please register here and leave your email, first come first serve.

Max quota : 5 jobs / week. (First come first serve), don't email to me. I will send a email to you to confirm the charge.

THX

Tpbear,

Please check email.

李雲迪,

Start from $450

THX

Power consumption of Western Digital HDD model no WD10EADS-00L5B1
1.0TB size.

Average Read Current
12V @ 0.23A  = 2.76W
5V @ 0.56A = 2.8W

Total = 5.56W

Maxtor specification
http://www.wdc.com/en/products/products.asp?driveid=576

They specify is 6W (Read/Write).

Power consumption of Seagate HDD model no:ST31500341AS
1.5TB size.

Average Read Current
12V @ 0.55A  = 6.6W, Peak start current is 2A, around 2 seconds
5V @ 0.51A = 2.55W, The current is varying from 0.25A to 0.51A max.

Total = 9.15W

Datasheet:

http://www.seagate.com/staticfiles/support/disc/manuals/desktop/Barracuda%207200.11/100507013e.pdf

See page 13, about the power requirement

Basic starter components for mainboard and tuner board.

Some people asking 100uF / 400V is enough for this application or not. (Around 35W at 2 HDD full load).

Let prove here:

Refer to the equation: Assume support world wide voltage (85-220V)

Po_max = 35W
vdc_min = 77V
Vac_min = 90V
f_line = 50Hz

Ans : Around 54uF is need. Therefore 100uF is much enough.

tszngai

請問正買供電電源底板(有插加比散熱扇用的)幾$$$呀!

Are you talking about the "BLUE PCB"? it is Linear PSU and with DSIX inside.

Dunno,

Please check email

See u

Left : Alum
Middle : Larger alum + Cooling fan
Right : Pure Copper + tiny Cooling fan

Weight (Right) = 3 X (Left + Middle)

tszngai

請問正買供電電源底板(有插加比散熱扇用的)幾$$$呀!

OK, may be we call this Plan F

This is modify from the original SMPS board. You can take this board only on 30-Apr.

I modify it to you and take it back on same night.
Special charge (not too much include components, and 2 extra fan to you)

Aloka,
Please check email

先講聲多謝先, 我都想上來你處見識見識!
今天時間不許可呀? Sorry!
// you are welcome

因工作時間很不定, 請問仲有什麼時間可到你處改善電源板呀?

// Next course is dedicated for Kaiboer model.

其實有無整塊另購的電源板買架,我很想跟你買全塊已改好的電源板?
// No, you can ask Mr.Yue (himedia shop) to purchase a new PSU.

仲有想問Plan A to E 那處有詳情呀? send條link睇下啦!
// Pls check email later.

Please check email.

dkam,

Are you interest to mod?

There are 5 people send the enquirly to me now.

THX

Dkam,

Count you in, and min people is 5.

Please wait our announcement later.

Shsun,

三洋 --> Brand
OS-CON --> Series name

ELNA--> Brand
Tell me which series you are want to compare?

其中有深藍色電容是不是ELNA --> NO.

Please check email box.

Laughting guo,

Admin will quote the price to u.

THX

Admin will send the price to you, but limited QTY (3 sets remains).

A detail modification class schedule and price (plan C only) will be announce this week.

5 people max per class.

吾到十二月吾會再搞摩HD100機班啦, 衹會 :

1. Full set Plan C components $1300, modify by yourself at home
2. Plan C 援摩全餐, $2300, 上門面議, 約三小時

$1300 淨料, 自己回家改

Only Plan C available