我的op前级做好了。

赤兔

等了n久，终于开声了。
<img src="attachments/dvbbs/20048307283165471.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/20048307283165471.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
我觉得论坛的板子算是明珠投暗了，简直被我糟蹋……，这个机箱的布局很不合理，本来是想让电位器后置的，后来没心情搞了，再想换换电源和放大板子的位置的，又没有手电钻了，结果就成了现在的样子。至于牛，是丽特买的，连续开了36个小时，感觉只是微温，还可以。本来是想另外搞个盒子做分体的，结果放弃了，因为没有体力带回工地……
只好缩在机箱里面，要么就外露、要么就倒置，外露太难看了。倒置又有影响，昨天买了罐酷儿做了个屏蔽。但是……机箱厚度不够，只好加高点咯：
<img src="attachments/dvbbs/20048307322539073.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/20048307322539073.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

声音的感觉是比较干净，用627的话，觉得声音比较单薄，所以换637来听。
<img src="attachments/dvbbs/20048307225232535.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/20048307225232535.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

小钳子

buf退藕是用silmic的100u，op是用22u的elna（论坛套件）。电阻使用holco的。
滤波电容换了只，主要是考虑耐压的问题，以后打算调高点推高阻的。零件如图：
<img src="attachments/dvbbs/20048307344674742.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/20048307344674742.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="attachments/dvbbs/20048307372194216.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/20048307372194216.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
<img src="attachments/dvbbs/20048307382021630.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/20048307382021630.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />


这个二房配合的是新买的sr325。性格比较刚强，中高明亮，低音结实，解析比较高，有松香味。
<img src="attachments/dvbbs/20048307392234304.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/20048307392234304.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
这是我手头的op，还有一些627AN、797、111AN被老爸征用去了，下次拿来对比。
<img src="attachments/dvbbs/20048307421755932.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/20048307421755932.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
下面是最近经常听的cd。
<img src="attachments/dvbbs/2004830743983371.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/2004830743983371.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />
说说听感吧，还有，由于音源是松下的手提vcd，只能算中规，甚至中下。
首先底燥几乎不可闻。低阻耳机（32欧）所以放大倍数只有6倍，输出电阻为15欧。换过3欧的试过，声音更加通透，但是觉得有点放，收不住的感觉。
op方面，我以为602是一般的东西，但是试听的感觉很好，中频比627/637都要厚，只是解析不够，但是配合sr325不错，正好削减一下明亮的中高。
手头的627/637bp是全新的。声音有点紧，连续开了24小时后637开始有感觉了。

cd的感觉。最明显的就是《此情可待》，录音的缺陷一缆无遗。风格比较喜欢，但是现在却无法听下去。卡门狂想曲觉得木特的风格太浮躁了。最动人的是往事如昔，只能用两个字来形容：感动。


再说说安装感受
论坛的板子做工很好，从第一眼看到就可以感受到了。
只是在动手之时，我至少有10年没有动过烙铁了……呵呵。所以手工差点咯。
最麻烦的事情是找机箱。回去广州的时候逛了好多次解放中，最后妥协买了丽特dac箱子。

电源部分基本没有问题，做放大板子的时候出了两个错误。一是装反馈电阻的时候装错反了。结果放大倍数只有一倍，声音有点怪。二是那个470p的电容……我看成.47u的，结果没有声音……


上班了，有空再写。

tigerbuger

楼主焊接要好好练练！