2008 7月-12月 第1項課程召集 - (1) 夏季 DAC 原理和製作班 (10月11日繼續組裝)

滿額, 下回請早....

HiFi Fever 從2008年開始會以召集型式開設工作坊, 砌機課程等等得到各音響發燒友大力支持 (差不多全部滿座), 我們在下半年會再度改良課程內容, 希望更切合大家的要求..

召集課程最先達到最少報名人數要求的便先行開班! 大家留名時亦可說出自己的特別要求, 我們會儘量配合!

2008 7月-12月 第一項課程召集 - 夏季 DAC 原理和製作班

DAC 課程包括套件: TDA1547, DAC1955, Tube buffer 等等

名額: 每班最少8名最多12名

課程內會教你 :
1. DAC 基本原理
2. DIY DAC 的 Tips
3. DAC 晶片的發展 (由1986至今), 不同品牌的特性
4. 怎樣在CS8414 Re-Clock?
5. CS8414 外的其他選擇
6. Non oversampling VS Oversampling, 那個較好?
7. SRC (Sampling rate converter)
8. TDA1541 的電源部份重要嗎? 為什麼?
9. 怎樣調較TDA1541? Un-documented application note.
10. 怎樣調較接收晶片?
11. DIY Layout Tips
12. Analog部份LPF和膽輸出討論
13. 怎樣最佳化各部份的零件
14. Upgrade Tips (五大類)
15. 安裝Tips
16. 測量和改善
17. 真Balance輸出的做法 (不是用opamp +/- 輸出的假Balance), 首次在DIY市場上出現.

日期:
5/Sep (Fri) 7:30pm-10:00pm (理論, 試機, 認識零件)
20/Sep (Sat) 2:30pm-8:00pm (組裝)

套件1 : TDA1547 DAC7High-end DAC
包括: 1547 DAC PCB, 中檔零件, 高級R型變壓器, 小型機箱
價格: $1980, TBA 包套件和課程 (先付$500訂金, 尾數第一堂付清)

Featuring:
Small form factor size of PCB.
2 SMD device, SAA7350 and SM5842 + TDA1547.
是Clone STUDER的D731的 DAC 7部分circuit
高频部分就采用Mark_Levinson耦合circuit


套件2 : Analog Device AD1955 TRUE Balance output High-end DAC
Coaxial In, Optical In, IIS In. PCB size like a ATX motherboard
包括: DAC PCB, 中檔零件, 變壓器, 大機箱
價格: $3480 包套件和課程 (先付$500訂金, 尾數第一堂付清)



報名: http://shop.hififever.com/product_info.php?products_id=301

地點: 荃灣沙咀道29-35號科技中心9樓910室
Map: http://www.hififever.com/forum/files/thumbs/t_map1_184.jpg

己報名(*=已收費)
TonyWang* (1547)
Dyna* (DAC1955)
mat_tli* (TBD)
MAKCW* (1541MK3)
rting (?)
henry168* (DAC1955)
autumnleafcat* (DAC1955)
Joe6* (DAC1955)
GOFFIC* (DAC1955)
Raphael* (DAC1955)
angusha* (DAC1955)
gene*  (DAC1955)
sugargar* (DAC1955)
tai chi* (TBD)
cy (DAC1955)

1st. I want to join, pls count me. joe6

ops: 請問係會制作純DAC 還是可以制作DAC+前級 (依款組合得唔得呢) 一部過呢?

謝謝幫忙

:wink: 留個位俾我 ..... 唔該.

Please count me too

I will join for DAC 1955 Balance.

Eric

[quote:9d8855a6d4="hifi301"]I will join for DAC 1955 Balance.

Eric[/quote]

Does "DAC 1955 Balance" mean truly balanced circuit design DAC 1955 with XLR input/output? Please explain the configuration. How much?

新手一名, 請留位俾我. tks

Reserve a seat first.  Will see if the class schedule can be fit into my own one as there will be a long trip in the coming few months.

BTW, KK Sir, I also have a few questions to ask:

1) What are the sound differences among 1541, 1547, and 1955?
2) In last DAC course, there is one option with tube buffer.  Can this tube buffer be constructed as a separate module to add to the coming 1541/1547/1955 so that I can easily switch it on/by-pass?

Thanks,
Leon

I am interested in DAC1955

Hi
I already have 1541 done, so only want theory..
Jason

Please count me too

pls count me in !!

我都想JOIN DAC 及 CDM9 ,請告知價錢~THANKS!

Dyna,

I want your Gundam.....

Looking for MG Gundam V2.0 at 26-July

KK.

KK Sir .

Great! All Gundam fans is waiting ....
All 2.0 is perfect !!!

Dyna(Ricky)

Hi, I would like to apply for the DAC and Transport classes

Kelvin Tai

Please count me too. Daniel

剛剛學人玩音响，合唔合報這班？

To,

OK, the first class with teach a little bit skill and technique.

KSir

[quote:f55a30f084="kk_ho"]To,

OK, the first class with teach a little bit skill and technique.

KSir[/quote]


Thank you , KSir
我報名

like to make a small case DAC, which model is good female vocal and jazz?

開課日期, 費用將在下星期公佈, 已留位者請留意電郵

請留2個位給我

I would like to reserve one seat. Thanks.

sorry, 因選擇了 hififever 另一課程, 請取消我的留位, sorry again

Please reserve 1 seat for me.  Thx.

Kelvin Tai

開始正式報名

http://shop.hififever.com/product_info.php?products_id=301

Dear Admin,

我已比左訂金,請查查看~

DYNA

Dear William,

How about DAC 1955 Pro balance with tube buffer?  Is it avilable and how much?

TonyWang
Dyna

Welcome to join!

mat_tli
MAKCW

Thanks for joining

Hi

    I have just paid the deposit HK$500 into your HSBC account this afternoon (29-07-2008). Please check.

MAKCW

rting, thanks for joining

TDA1541A MK4 featuring: (Great improvement of MK1-3)

1. TI DIR9001 input receiver, native on board.
2. Support External clock to DIR9001
3. LED Lock Status of DIR9001
4. Individual power supply to DIR9001
5. Precision components in DIR9001 PLL circuit.
6. TWIN TDA1541A equipped
7. I/V output socket for LPF tube buffer.
8. 4 X NE5532 Single gate Op-amp
9. Pico-Gate logic gate on board.
10. Output Relay.

What is the MK-V featuring ?

I paid the deposit to chartered bank & faxed the receipt to u today.

mat_tli, thx for joining

已報名的如想製作1547或ad1955請通知, 今次只有4套1547, 2套ad1955

KK Sir,

I want to join and the problem is I can't come on 5/Sep. Is it a problem for me because only 1 lesson to make the DAC without 理論, 試機, 認識零件.
I would like to join it with the 套件3.

Joe6, it will be better if you can come on 4/sep or 6/sep to pick up the kit and kk can teach you how to do assembly at home before coming in the next lesson

please count me in, thanks.

Luis, pls apply from here

報名: http://shop.hififever.com/product_info.php?products_id=301

[quote:3c5a257fa0="Admin"]已報名的如想製作1547或ad1955請通知, 今次只有4套1547, 2套ad1955[/quote]

Dear William,

我想問問與1541&1547分別在那?因我還未知應砌邊部.

THANKS!!!
Dyna

Dear sir,

I want to join and the DAC class with 套件3, please reserve a seat to me but I cannot download the application form from the posted link, can fax the application form to 25058203 please?

Thanks

Ronald

Hi sugargar,

The shopping site problem has been fixed

we do not need application form, just put the course in your shopping cart and checkout will be ok. You can then pay by bank in deposit or creditcard.

報名: http://shop.hififever.com/product_info.php?products_id=301

DAC 3: AD1955 Absolute True Balance DAC:

Featuring:
1. Full DALE resistor
2. Large cap pad size for easy upgrade to Black Gate capacitor
3. Absolute true balance config.
4. 2 X AD1955 DAC
5. Full LCD display input status.

Most of the device are SMD base, we can help you soldering if you need.
Due to alot of resisotr, transistor and diode are need to soldering, a careful and mid-advance DIY skill are needed.

Sound quality is a "very details", with a solid and highest channel seperation.

This board can also work on Un-balance mode, you can adding TUBE buffer to tune the sound taste like a tube taste.

DAC 7 TDA1547: DAC No.2

Featuring:
Small form factor size of PCB.
2 SMD device, SAA7350 and SM5842 + TDA1547.
是Clone STUDER的D731的 DAC 7部分circuit
高频部分就采用Mark_Levinson耦合circuit

KK SIR,

如果我想將部 DAC 放入CDM9 大機箱,邊套先可以 .

TONY

Dear KK,

I just bank in deposit for the DAC course. I also would like to reserve the DAC1955PRO for integrating with the CDPRO2M which I enrolled earlier. So that my CD player has a concrete architect to start with.

I think AD1955 in balance architecture is the most appropriate platform for me. Closed to my current Meridian G08 CDP. Detail system architecture (like I2S clock derived from DAC and feed into CDPROs) will discuss with you later. This makes my project exciting.

Thanks in advance.

Autumnleafcat.

Dear KK sir,

Sorry to inform you that I've to cancel my booking because of some business matter, hope can join your class later.