DIY 自作派同好同學會 |
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回覆 (42): DIY 自作派同好同學會
The same applies to the SU-27 engine. They managed to clone the Lyulka AL-31F, sinking a lot of manpower and $$$ into the project but eventually had to give up buy it from the Russians because the Chinese version was plagued with metal fatigue related problems that they were unable to solve and was too heavy.  
My partner in China used to be involved in some of the projects and got me to purchase delays, connectors etc from Briton and France. Strange enough, a lot of China government purchases were never tendered. It’s a buddy buddy kind of thing. When the big shot from Beijing visited Shenzhen we enjoyed have big suppers and going to night clubs at somebody’s expense.  
Those were the days…….  
 
feikeung
10-10-29
00:12:36
回覆 (41): DIY 自作派同好同學會
The original plan of 殲十(J-10) was to employ home-brew engines but it had to be abandoned and the Russian AL-31 engines are now  
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what is the cause? design fault or manufacturing fault? who design the engine? Chinese? if yes, i'm not surprised.
drwkng
10-10-28
23:50:12
回覆 (40): DIY 自作派同好同學會
The original plan of 殲十(J-10) was to employ home-brew engines but it had to be abandoned and the Russian AL-31 engines are now used.  
feikeung
10-10-28
23:11:41
回覆 (39): DIY 自作派同好同學會
including unibody Macbook?  
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yes, i think so.
drwkng
10-10-28
22:53:31
回覆 (39): DIY 自作派同好同學會
The big 3’s in civil aircraft engines are General Electric, Rolls-Royce and Pratt & Whitney.  
Our beloved motherland still has a long way to go.  
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they might not be able to design them but they definitely can manufacture them.
drwkng
10-10-28
22:53:10
回覆 (38): DIY 自作派同好同學會
The big 3’s in civil aircraft engines are General Electric, Rolls-Royce and Pratt & Whitney.  
Our beloved motherland still has a long way to go.  
 
feikeung
10-10-28
22:49:56
回覆 (38): DIY 自作派同好同學會
including unibody Macbook?
ackcheng
10-10-28
22:40:07
回覆 (37): DIY 自作派同好同學會
i don't think so. we just don't get to know those that's all = just don't have it, period  
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you got to be kidding. do you know how many precision parts China made for NASA and us air carrier manufacturers?
drwkng
10-10-28
22:12:39
回覆 (36): DIY 自作派同好同學會
i don't think so. we just don't get to know those that's all = just don't have it, period  
feikeung
10-10-28
21:53:08
回覆 (35): DIY 自作派同好同學會
精蜜机械及冶金正是強国的弱弱項 ----- 龍的傳人血液裡压根兒沒有這种文化  
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i don't think so. we just don't get to know those that's all.
drwkng
10-10-28
21:29:11
回覆 (34): DIY 自作派同好同學會
哈哈, 你对偉大的祖国太了解了!!!  
精蜜机械及冶金正是強国的弱弱項 ----- 龍的傳人血液裡压根兒沒有這种文化  
 
 
 
feikeung
10-10-28
21:21:21
回覆 (33): DIY 自作派同好同學會
算了,做對密的金屬,祖國還有一段距離.....
accphoto
10-10-28
20:22:15
回覆 (32): DIY 自作派同好同學會
高高手...... !!!  
 
I want to have one but the price may not attractive as mine......
Vash
10-10-26
14:21:36
回覆 (31): DIY 自作派同好同學會
乜都可以刻隆..
dd845
10-10-26
11:06:37
回覆 (30): DIY 自作派同好同學會
Cloned Thorens Reference MK I turntable  
 
真利害!  
 
http://www.diybuy.net/thread-299538-1-1.html
dd845
10-10-26
11:00:39
回覆 (1148): 我又 update
>>>did you sleep last nite? ha Good work!  
 
No, not even tonight because of UEFA matches.  
 
^___~  
Vash
10-10-21
12:53:59
回覆 (1147): 我又 update
Vash,  
 
又係度放毒,好彩自己苯手苯脚。
jcml
10-10-21
10:47:35
回覆 (1146): 我又 update
Accphoto,  
 
好靚wor!  
 
 
jcml
10-10-21
10:42:28
回覆 (1145): 我又 update
vash,  
 
did you sleep last nite? ha Good work!
8po
10-10-21
10:32:33
回覆 (1144): 我又 update
I like it!  
let us know how the Unitrac fares with the T3Pro
scallywag
10-10-21
10:30:55
回覆 (1143): 我又 update
very nice ^__^
daiwok
10-10-21
03:39:00
回覆 (1142): 我又 update
買o左好耐,終於搞掂。  
 
Magnepan Unitrac 1 tonearm !  
 
由於要做過塊 armboard 所以花了一點心機  
Photobucket  
 
換個角度睇  
Photobucket  
 
裝埋 MidasTouch !  
Photobucket  
 
開聲!  
Photobucket  
 
 
^___^  
 
Vash
10-10-21
01:45:46
回覆 (1141): 好耐無 update
>>>點解唔可以 Post 多的相?  
 
可以呀。用 HTML code 就得。
Vash
10-10-19
23:37:23
回覆 (1140): 好耐無 update
>>>箱用了 6mm 和 12mm 的板  
 
真的"零"洩漏嗎?好驚喎…  
 
Vash
10-10-19
23:26:37
回覆 (1140): 好耐無 update
電源用了 3 份,分開給時鐘,控制部份和數碼部份。電源有 swtiching power supply, 另加所有數碼都 2 級穩壓,保証電源乾淨。  
 
開聲了!
accphoto
10-10-19
23:26:34
回覆 (1139): 好耐無 update
比較複雜和危險,因為個鏡是放射性的,所以個箱用了 6mm 和 12mm 的板。
accphoto
10-10-19
23:23:32
回覆 (1138): 好耐無 update
玩到無野好玩,玩鐘!
accphoto
10-10-19
23:21:23
回覆 (1137): 好耐無 update
More photo....
accphoto
10-10-19
23:20:31
回覆 (1136): 好耐無 update
繼續 Post 相....
accphoto
10-10-19
23:18:49
回覆 (1135): 好耐無 update
點解唔可以 Post 多的相?
accphoto
10-10-19
23:18:00
回覆 (1134): 好耐無 update
http://www.photo100fun.com/attachments/forumid_122/20101012_b1ca2e15a57d8c3c606dbEInfPzupDPY.jpg  
 
http://www.photo100fun.com/attachments/forumid_122/20101012_fdfc4cff91dc05547794n26QGMegxjPH.jpg  
 
http://www.photo100fun.com/attachments/forumid_122/20101012_ee8342502555009e1ab4dcVUv3XQXoOC.jpg  
 
http://www.photo100fun.com/attachments/forumid_122/20101012_c673a1cc18bfe007bcc2cbhPwod1zeh6.jpg  
 
http://www.photo100fun.com/attachments/forumid_122/20101019_affedf01183e4a5eea21ZcSJnPbnHuMj.jpg  
 
http://www.photo100fun.com/attachments/forumid_122/20101019_5d5c981f8f69a7c71f3fok5HrtvbZEZE.jpg  
 
http://www.photo100fun.com/attachments/forumid_122/20101012_0062d223ae6011655f7fVZChVKl7jvHg.jpg
accphoto
10-10-19
23:16:42
回覆 (1134): 好耐無 update
好!
dd845
10-10-19
23:16:31
回覆 (1133): 好耐無 update
手上的 DIY 器材已經 update 完,Post 上來先  
 
CD 盤全面 update.....
accphoto
10-10-19
23:10:06
回覆 (1132): Bottlehead Paramour 3.5w
Having heard the Bottlehead direct coupling 2a3....I honestly do not feel the Nuforce v3 is inferior. The nuforce has all the refinement, and perhaps even more so, than the 2a3. It has been a long while since i have a DHT amp in my room so the memory was weak until now. Nuforce has refinement, and enough headroom for really big orchestral piece. When I am hearing the Bottlehead, I am missing the Nuforce which is gone already.
Welborne
10-08-05
16:58:56
回覆 (1131): Bottlehead Paramour 3.5w
The bastanis baffle isn't ready yet which has paper 100db/1w in sensitivity. I think the Bottlehead will go even louder on those.  
 
The Bottlehead Paramount (not paramour as I typed previously) is a very special direct coupling 2a3. The last time I had such amps was about 2 years ago, 417a-dc-71a (0.7w) and single stage 5687 (0.3w).  
 
Now equipped with the Bastanis, I am interested in trying again my tube collection of VT-25 (i got some rare globes under my bed), 71a....
Welborne
10-08-05
13:50:22
回覆 (1130): Bottlehead Paramour 3.5w
I am certainly interested in hearing both the Bastanis and the Bottlehead but 3.5W is way too much power for me ^__*
daiwok
10-08-05
09:26:35
回覆 (1129): Bottlehead Paramour 3.5w
My friend who sold me Bastanis Atlas baffle kit (the baffles are still in the making, sourcing finnland plywood these few days) lend me his pair of Bottlehead Paramour 2a3 monoblock to try on my existing grundig/isophon/18" celestion baffle.  
 
Paramour is a direct coupling 2a3 amp meaning no capacitor in the entire signal path. The power supply portion of this amp is said to be very good but i know very little about the technology. something called parafeed etc.  
 
Anyway, how loud can i get with just 3.5w from direct coupling 2a3?  
 
I was playing Dance Macabre of Saint-Saens tonight...so dynamic and loud that i felt the wall behind the speakers had fallen down.  
 
my god.
Welborne
10-08-05
01:14:05
回覆 (1128): Request for help re. resistor
That is the chapter 2, here is the Chapter 1 article
http://www.6moons.com/audioreviews/ob/ob.html
Welborne
10-07-30
19:02:00
回覆 (1127): Request for help re. resistor
An account of an open baffle addict...on 6moons.com  
 
Well, his favourite "fullrange" (in fact not so fullrange, needing a woofer to crossover below around 200hz) is a pair of flag-ship Feastrex 9 inch fieldcoil, which retails for USD42,000 a pair (no number typo here!).  
 
I have some email exchange with this guy named Lance. He was coming from big horn time like those big Altec and big Klipsch, and dealt with stuff like Martin Logan electrostatics etc.  
 
To his ears, his various OB consisting an assortment of very high sensitivity fullrange drivers like various Lowthers model, Supravox and Feastrex are the best sound he has ever achieved.  
 
Well, when I asked about Bastanis, he told me he had not listened to those yet. Neither did he have any close encounter with AER MD series  
 
http://www.6moons.com/audioreviews/ob2/1.html
Welborne
10-07-30
18:58:37
回覆 (1126): Request for help re. resistor
Vash,  
 
Thanks a lot for the link. The 7W ones look quite similar. Will check it out.  
 
8po,  
 
Those are cathode resistors of my Jadis power amp. A recent body check of the amp revealed that 10 (out of a total of 40, 2 in parallel for each KT88) of these resistors were dead.
ThomasC2
10-07-29
20:40:05