NAP140 的仿造

nark · 发表于 2007-1-10 16:16

这个我做好了很久了,很不错的.关键在零件的搭配上,晚上我上个图.[em04]

iamvernon9 · 发表于 2007-1-10 18:07

斑竹有原机电源部分的电路图吗？这机是纯后级？+-40V供电输出功率大概多少W？

旅途 · 发表于 2007-1-10 18:48

原机14磅重输入阻抗维持在22k   一般情况下8欧45w   4欧70w   95年售价1450美金至于电源部分通常是最简单的单桥加两个电容如果需要升级需另外购买稳压电源

iamvernon9 · 发表于 2007-1-10 19:51

呵呵，多谢，这两天看看做个玩玩，大管子好找吗？可用什么型号代替？还有，电路图上那个可调电阻是调什么的？怎么调末级管的电流？呵呵，问题太多，水平太菜[em04]

旅途 · 发表于 2007-1-10 20:58

这些问题请教贴主吧

iamvernon9 · 发表于 2007-1-10 21:41

呵呵，那就请楼主给指导一下吧

wzy728 · 发表于 2007-1-10 21:43

NAIM应该也是虚标功率的高手,犹如前几年的东风/解放牌大卡车...

输入电龙 · 发表于 2007-1-10 21:55

据说此机高频切掉很多,所以不吵耳.缺少细节. [em01][em01]

蓝子风 · 发表于 2007-1-10 22:14

支持安仔一下。这个电路还是不错的输入上有滤除过高的频率，只要电路内部不会产生自激，就可以算是稳定的了。

nark · 发表于 2007-1-10 22:39

NAP140 的仿造

aeon · 发表于 2007-1-10 22:46

是的,那个电阻就是调整输出功率管的静态电流.40V供电下我用仿真测试是可以有RMS45W8欧的.细节的多跟少.最好自己听听再说..我现在听下来.没有感觉到多跟少.反正平日我听30分钟就不听的碟今天开了一整天.箱子就在我不到1米的地方.已经很大声了,不吵耳.就算是CS中,(一个游戏)我也没带耳机就直接听电脑的2.1箱子跟这个大箱子发出的声音,也没觉得有啥不妥...[em03]煲机到现在.新电容估计可以了吧..已经更感细腻...现在开着箱子都不想听耳机了..

HQ · 发表于 2007-1-10 23:15

就知道独自偷欢。开板啊。

zjf001 · 发表于 2007-1-10 23:31

<div class="quote">以下是引用aeon在2007-1-8 17:33:00的发言： 前几天跟朋友说起想做个可以长时间听的功放.一般的乙类功放都容易生硬不耐听,单端甲类声音美妙但又太耗电.朋友就说..niam 的功放不错呀.省电又好声..他基本买来就开着不关机的.所以就有了今天这个功放..用的都是手上东拼西凑的零件.实际试听,真如朋友说的,动听不吵耳.比我的LM4780好听,低频控制力也强多了.虽然用的是100W 的环牛..唉..又上了一课....<img src="attachments/dvbbs/2007-1/20071817341613696.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/2007-1/20071817341613696.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2007-1/20071817314081853.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/2007-1/20071817314081853.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /> <img src="attachments/dvbbs/2007-1/20071817314935869.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/2007-1/20071817314935869.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /> <img src="attachments/dvbbs/2007-1/2007181732187159.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/2007-1/2007181732187159.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /> <img src="attachments/dvbbs/2007-1/20071817321332991.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/2007-1/20071817321332991.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /> <img src="attachments/dvbbs/2007-1/20071817322579463.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/2007-1/20071817322579463.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /> <img src="attachments/dvbbs/2007-1/20071817323611705.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/2007-1/20071817323611705.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /> </div>有机会我也做个玩玩试试

nark · 发表于 2007-1-10 23:47

有一点不好就是信噪比不好.[em04]

ztmy · 发表于 2007-1-11 09:47

40v应该不止45w吧......

音乐虫子 · 发表于 2007-1-11 10:05

二话不说.支持开板....最好有套件[em03][em03][em03]

dh1030 · 发表于 2007-1-11 10:08

好像几年前做过，声音比较直接，比较监听的风格，不过我那时做，输入那里取消了那个滤波。

Julien · 发表于 2007-1-11 10:15

<div class="quote">以下是引用aeon在2007-1-10 22:46:00的发言： 是的,那个电阻就是调整输出功率管的静态电流.40V供电下我用仿真测试是可以有RMS45W8欧的.细节的多跟少.最好自己听听再说..我现在听下来.没有感觉到多跟少.反正平日我听30分钟就不听的碟今天开了一整天.箱子就在我不到1米的地方.已经很大声了,不吵耳.就算是CS中,(一个游戏)我也没带耳机就直接听电脑的2.1箱子跟这个大箱子发出的声音,也没觉得有啥不妥...[em03]煲机到现在.新电容估计可以了吧..已经更感细腻...现在开着箱子都不想听耳机了..</div>[em03][em03][em17]

海象 · 发表于 2007-1-11 12:03

前段时间也试验过的...........不错！<a href="http://wt.hifidiy.net/bbs/dispbbs.asp?boardid=2&replyid=513362&id=41821&page=1&skin=0&Star=1">http://wt.hifidiy.net/bbs/dispbbs.asp?boardid=2&replyid=513362&id=41821&page=1&skin=0&Star=1</a>[em01]

旅途 · 发表于 2007-1-11 13:59

这种平淡稍奇的架构是很考功力的naim独具一格的接地方式  接线方式   布局  机箱  元件 ...涉及太多细节拿捏了

[分立后级] NAP140 的仿造

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