欢迎拍砖：我也做了一台34SE。

家家乐

现在用的是6N8 SRPP+34。

相机不在，讲一讲吧。

电路没有最后确定：6N8 的阴极电阻为2.2K；34的阴极电阻为270，电容用的是400V68微法。隔直电容0.22微法630V。

电源有点意思，C-R-C-C：330微法450V，200欧姆，680微法400V，到后级。两个33K68微法400V各分到前级。大电容用泻放电阻100K。

用的是宝尔真的输出牛。

34电源电压330V，前级250V。

mzzfg

可以用来装比较复杂的推挽机了。

家家乐

放在肚里看不见,再者线不够了,都快拉直了.最后的接地也用红线了.


一定再搞一搞.

文招

机箱很喜欢,再整理一下布线,好听,心理也舒服[em11][em11][em11]

家家乐

第一次装机，大家不要笑话，看管座就能看出来，标准的菜鸟一个。

本次装机是在一台报废电泳仪的基础上改装的，当时就看中了机箱附带的两个表头。电源变压器也是原配的，初级220V0.8MM,次级6.3V1MM*2,高压145V+145V+210V0.5MM,应该在300W左右. 输出牛是宝尔真的,带超线性抽头,次级0,4,8欧姆,2.5K,3.3K,4K可调.

由于机箱已经固定,底盘已经开好孔,摆起位来就有一定难度.只能把输出牛同电牛相差90度,不能卧式安装.

为了高保真,并不是一味追求胆味,最后采取了SRPP+34SE超线性接法,简单稳定,力求一次成功.元件的采用也是力求现有的和苏密送的,比如整流桥就是10A600V的,原本就是电动骨钻控制台部分.所有的接插件就来源于电泳仪和骨钻控制台.滤波电容取得比较变态,就怕滤波不好,阴极电容没有很合适的,就用了400V68微法.

两个表头的应用费了一番脑筋,最后电流表扩流20倍,指示总电流.电压表指示后级电压,和两个前级电压.这样,前级的电流可以算出来,后级的电流并不太好算.本来想分别指示后级电流,怕引起噪声而作罢.后来再改也是很容易的事情.

结果是可想而知的,一次开声,没有负反馈,没有灯丝接地,电流声刚好1.5M听见.灯丝一侧接地,就达到了开机死寂状态.

装机感悟:普通机器都使用UV表,好看并不实用,有点花拳绣腿的感觉.远不如电压表和电流表来得实在,工作状态一目了然.

家家乐

<img src="attachments/dvbbs/2005-10/2005107205856375.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-10/2005107205856375.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

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<img src="attachments/dvbbs/2005-10/2005107205517123.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-10/2005107205517123.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

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<img src="attachments/dvbbs/2005-10/2005107205043846.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-10/2005107205043846.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="attachments/dvbbs/2005-10/2005107205138327.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-10/2005107205138327.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

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<img src="attachments/dvbbs/2005-10/2005107204731751.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-10/2005107204731751.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="attachments/dvbbs/2005-10/2005107204828400.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-10/2005107204828400.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

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<img src="attachments/dvbbs/2005-10/2005107204355253.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-10/2005107204355253.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="attachments/dvbbs/2005-10/2005107204455697.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-10/2005107204455697.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="attachments/dvbbs/2005-10/2005107204518985.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-10/2005107204518985.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

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<img src="attachments/dvbbs/2005-10/2005107204121913.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-10/2005107204121913.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
内部正面观。

mzzfg

恭喜啊！

家家乐

谢J版给多种电路的建议。


谢苏密给接插件旋钮，电牛和所有的电阻。


没有他们的支持我做这东西要费很多事。


再次感谢！

家家乐

最后上图和电路图。

家家乐

我的机箱特殊的，俩表头，一个电压表，可以随时切换各级电压，电流表显示工作电流。


电流表的功能有待继续开发！

结果：最大音量时，一个声道靠近音箱高音可以听到似有似无的交流声，另一个声道一米有交流声，估计与电源插座有关。

家家乐

6N9 SRPP不好。

6P3P SE 也不好，声粗。

电源电压低于300V不好听。

现在最大的缺点灯丝电压5.85V，有点低。

当然不用稳压器的时候就不低了。我这儿常在235V左右。

cjf1981

Julien

输出阻抗也并不算低。。。