土兄请进

土八路

重新作了肯定会上的！
[em05][em05][em05]

文招

俺也学学[em09][em09][em09]

文招

1,  是只有一组
2,  是难看，所以我拆（当初仅试响）
3,  也许按你的搞好了还有噪音呢[em11]
4,  暂用的

土八路

1。6N8P灯丝你只有一组绕组？平衡电位器只用了一个？
2。感觉接线特别多，要是我搞，肯定乱七八糟！
3。灯丝线还是紧贴机箱底部好！而且尽量不要穿过前级小信号元件和线。
[em11][em11]
牛罩还行！不过螺钉难看
[em11][em11]

文招

<img src="attachments/dvbbs/2005-5/2005522165450646.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/2005-5/2005522165450646.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
[em11][em11][em11][em11][em11][em11]

文招

昨夜看别的论坛，有说用电钻绕线的，看他的效果的确也很好[em04][em04][em04][em04]照抄了[em11][em11][em11][em11][em11]

文招

拆了[em08][em08][em08]

土八路

[em09][em09][em09]

文招

虽然不是很清晰，但能看出个大概来的[em11][em11][em11][em11]
我的机机有可能是运气吧，不用2A3的灯丝平衡电位器（用二个42R电阻），能做到开尽音量贴喇叭（志平的毒喇叭）基本听不到噪音[em06][em06][em06][em06]
上图的叧一个原因是，我决定拆开重装，作个保存参照[em08][em08][em08][em08]
重装就是尽量排得好看些[em04][em04][em04][em04]
<img src="attachments/dvbbs/2005-5/2005522112644819.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/2005-5/2005522112644819.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-5/2005522112655634.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/2005-5/2005522112655634.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-5/200552211275142.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/2005-5/200552211275142.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-5/2005522112713979.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/2005-5/2005522112713979.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-5/2005522112723971.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/2005-5/2005522112723971.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-5/2005522112733782.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/2005-5/2005522112733782.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

土八路

以下是引用Julien在2005-5-21 21:12:00的发言：

[em07][em07][em07][em07]

Julien

土八路

[em11][em11][em11][em11][em06]
实在不行，就用线材焊接，反正目的要达到！
[em06][em06][em06]

文招

[em11][em11][em11]

土八路

[em11][em11][em11][em11][em11]

Julien

该通的地方接触良好，就没问题

土八路

以下是引用Julien在2005-5-21 20:14:00的发言：

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

Julien

文招

[em02][em02][em02]

文招

的确没有仔细调整，只是改灯丝绕组就插上了[em08][em08][em08][em08]
我的输出牛15W的[em11][em11][em11][em11]

土八路

以下是引用文招在2005-5-21 17:57:00的发言：
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]

但我不知你的高压电压调整没？
300B的管耗用了多少？
推动300B的电压有多大？
输出牛功率够不够？
你用心调整没有？
如果一切正常，有这个结论，那就。。。。
彻底打消了我做300B的念头！
不过，你听过，我没听过，还是做一下好一些，
顺便问一声：你买了300B了？那个型号？
[em11][em11]