土兄请进

文招

推毒喇叭，声压已足够。听古璇的口水碟，低频也交代得过去[em11][em11][em11]
试过单换灯丝5V绕组直插300B听，中高频是圆滑些，但低频差多了，声压也没有可闻性大的提高[em04][em04][em04]
当然有可能是输出牛未改3.5K的原因，但我总算同机对比过2A3和300B了，所以告八路军同志，不用上300B了，专心搞好2A3吧[em02][em02][em02][em02]

土八路

[em11][em11][em11][em11][em08]

土八路

将散热器与机壳绝缘隔离，然后电压放大级的栅极、阴极电阻准备就近（散热器）接地，然后用铜线或者铜排与后级以及电源、输出的地线连接汇集，然后一点接地！
不知结果会如何！
[em06][em06][em06][em11][em11]

文招

馊主意[em11][em11][em11][em11]

土八路

以下是引用文招在2005-5-20 22:00:00的发言：PL,为何不做大些？装两个管座就好了
[em09][em09][em09]

而且准备就地接地。。。
[em06][em06][em06]

文招

以下是引用土八路在2005-5-20 20:54:00的发言：
<img src="attachments/dvbbs/2005-5/200552020539189.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/2005-5/200552020539189.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-5/2005520205337755.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/2005-5/2005520205337755.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />[em06][em06]

[em09][em09][em09]

狂之又狂

土八路

[em11][em11]

狂之又狂

土八路

<img src="attachments/dvbbs/2005-5/200552020539189.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/2005-5/200552020539189.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-5/2005520205337755.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/2005-5/2005520205337755.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />[em06][em06]

土八路

经ACDSEE调整大小时长宽没有按比例造成的！
[em11][em11]

huajian

好不容易看完超级长贴，花了3个小时有余啊，大伙继续

狂之又狂

土八路

[em11][em11][em11]

机箱和一些结构件均在准备中，
希望比第一次有长足的进步，
进一步减少电压放大级的噪音，
解决整流胆与功率胆与牛靠的太近，不能长时间开机的问题！

[em11][em11][em11][em06]

文招

好的话,我拆开学你的[em11][em11][em11][em11][em11]

土八路

我会在一个月之内，给你一个惊喜！
让你看到一个干净、简洁的布局！
[em11][em11]
[em06][em06]

文招

耦合电容用二个思碧0.1035uF的并联[em11][em11][em11][em11]
<img src="attachments/dvbbs/2005-5/2005530173451291.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/2005-5/2005530173451291.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-5/20055301735133.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/2005-5/20055301735133.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

土八路

以下是引用文招在2005-5-30 13:13:00的发言：
（灯丝的大电流对2A3的栅极造成干扰！）这我要试过才知[em06][em06][em06]
我习惯用电解作阴极了，油浸和薄膜不喜欢[em11][em11][em11][em11]

[em00][em00][em00]

文招

（灯丝的大电流对2A3的栅极造成干扰！）这我要试过才知[em06][em06][em06]
我习惯用电解作阴极了，油浸和薄膜不喜欢[em11][em11][em11][em11]

土八路

我到处在找那种粘胶的固定座，方便些！
还有要小心灯丝的大电流对2A3的栅极造成干扰！
[em11][em11][em11]


还有，阴极退耦干吗不用80u的薄膜？声音更甜些！


[em11][em11][em11]