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Old 15th September 2009, 12:20 PM   #1
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Default DIY Hi-Fi PC power amplifier (Live..)

Hello everyone! I come from China, English is not good, pictures speak for themselves.
The figure ....
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PCB
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Old 15th September 2009, 03:43 PM   #2
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Not sure why. If one cuts and pasts the link they show in my browser.

http://bbs.b01.net/attachment.php?ai...2&t=1253017095


http://bbs.b01.net/attachment.php?ai...c&t=1253017064


Or if I click on the above link go to the address bar and then press enter on my keyboard.

Try downloading the pictures and then attach them to a message instead of linking.
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Old 15th September 2009, 03:44 PM   #3
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Like so
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Old 15th September 2009, 04:01 PM   #4
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Less talk and more work, to continue .....
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Old 15th September 2009, 04:20 PM   #5
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Continue ...
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Old 15th September 2009, 04:41 PM   #6
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Desktop amplifier, positioning is very clear. Chassis is small, less power requirements, but I do not like thick, IC and other type of amplifier, so this will be used on the possession, NJW0302 with NJW0281 This tube sound beautiful, I remember it was a magazine Ranking No. One of them, but fortunately it would not much to say.
1, amplifier board, I heard Road, with a pair of tube amplifier for the desktop is enough.
2, the former Class of 5532, I chose ten times larger, we may here have a feeling that can not think of justice, and so many things still on the low end of something presentable and acceptable? Ha ha! No, if I remember correctly, the last of thousands of machines are all pre-class all-oh op amp.
3, power supply prices, I chose the Department of chemical capacitance, 10000UF * 4 40000 U of the capacitor, for the two channels come from enough of a transformer do I use the 250W of the EI imported cattle, why not ring-type transformer it? EI bovine Toroidal transformer with low contrast, Alto has also come to some better.
4, enter the conversion with a small relay
5, potentiometers do with ALPS 27-type, stable and durable.
6, the chassis is not said, and on the map take your time.

The standard of English is not good, poorly translated, reads as follows:

桌面功放,定位很清晰。机箱小,功率要求不大,但我不太喜欢厚膜、IC等这类功放,所以这次会用对管,N JW0302与NJW0281这对管音色很美,记得某本杂志当时把它排行第一位呢,好在那就不多说了。
1、功放板,一声道用一对管,对于桌面功放来说足够了。
2、前级我选用了5532的十倍放大,大家可能这里有有点觉得不可思义了,这么低端的东西还上大雅之堂?呵 呵!非也,如果我没有记错的,上十万的机器全是清一色的运放前级哦。
3、电源部价我选用了化工的电容,10000UF*4 四万U的电容,对于两个声道来的够用的了,变压器呢我选用的进口的250W的EI牛,为什么不用环型变压器 呢?EI牛对比环型变压器低、中音还来得好一些。
4、输入转换用了小继电器
5、电位器呢用ALPS 27型,稳定而耐用。
6、机箱就不说了,上图慢慢看吧。
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Old 15th September 2009, 05:32 PM   #7
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Then went on to ...
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Old 15th September 2009, 06:15 PM   #8
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Again.....
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Old 15th September 2009, 06:33 PM   #9
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Today, stop here, BEIJING time of 2:24, and tomorrow, re-transmission of ...
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Old 16th September 2009, 02:36 PM   #10
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Again.....

Chassis,Signal,Signal switch...
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