2010-3-10 08:38 AM
shiwei25
和exposure首席设计师的几封email(含后续交流,呵呵)
:loveliness: exposure首席设计师给我回信了,exposure 3010s的阻尼系数知道了,原文如下:
[font=Arial][size=2]Dear Wei Shi[/size][/font]
[font=Arial][size=2]the damping factor for the 3010S integrated is greater than 100[/size][/font]
[font=Arial][size=2]best regards[/size][/font]
[font=Arial][size=2]Tony Brady[/size][/font]
[indent]----- Original Message -----
[b]From:[/b] [color=#0000ff]Wei Shi[/color]
[b]To:[/b] [email=info@exposurehifi.com][color=#0000ff]info[/color][/email]
[b]Sent:[/b] Tuesday, March 09, 2010 2:39 PM
[b]Subject:[/b] hi,Please tell me the damping factor of exposure 3010s integrated amplifier,thank you.
[size=2]hi,info:
Please tell me the damping factor of exposure 3010s integrated amplifier,thank you.
20100309 wei.shi
Shandong China
[/size]
[size=2]看来控制力一般,不算高,smert兄,是不是这样,呵呵,我不是太明白?:134
[/size][/indent]
[[i] 本帖最后由 shiwei25 于 2010-3-10 04:35 PM 编辑 [/i]]
2010-3-10 08:50 AM
shiwei25
yahoo了一下,发现第一条记录就是:Tony Brady, Chief Designer, Exposure Electronics Ltd.
:141
[[i] 本帖最后由 shiwei25 于 2010-3-10 08:52 AM 编辑 [/i]]
2010-3-10 09:26 AM
SMERT
我之前预测3010S的阻尼系数在100-200,与首席设计师的回复是一致的。
这个价位的HIFI功放,不可能有很高的阻尼系数。
2010-3-10 09:56 AM
hero12300
呵呵 不错~;hh
2010-3-10 10:37 AM
沈摄影师
[quote]原帖由 [i]shiwei25[/i] 于 2010-3-10 08:38 AM 发表 [url=http://www.av199.com/redirect.php?goto=findpost&pid=2973495&ptid=277766][img]http://www.av199.com/images/common/back.gif[/img][/url]
:loveliness: exposure首席设计师给我回信了,exposure 3010s的阻尼系数知道了,原文如下:
Dear Wei Shi
the damping factor for the 3010S integrated is greater than 100
best regards
Tony Brady
--- ... [/quote]
[i] shiwei25兄:[/i]功率放大器对喇叭震膜的惯性质量的控制能力,是通过功率放大器的电阻尼系数来决定,但阻尼系数并不是越高越好,阻尼系数应该“恰当”,这个观念你必须要纠正。之所以很多发烧友都认为阻尼系数越大越好,都是收了音响杂志枪手的误导。阻尼系数过高会导致过阻尼,音色发干,低频反而量感偏少,缺少弹性。而阻尼系数过低,将会导致欠阻尼,声音拖沓,浑浊。
[font=宋体][size=10.5pt] 扬声器系统的质量惯性能否受到功放有效的阻尼(控制)还和功率放大器的工作状态有关:[font=宋体][size=10.5pt]甲类功放的阻尼特性最好,由于其工作的时候,工作电流不随着输入信号的幅度变化而变化,是恒电流工作,正负两臂均导通,阻尼系数的双方向的,在突发性高电频上升时,音圈按照波形去震动,信号停止时,反电势经导通的[/size][/font][font=Arial][size=10.5pt]b[/size][/font][font=宋体][size=10.5pt]臂完成通路,惯性被阻尼,无法产生自由振荡,反电势也建立不了,甲类功放这种全方向的阻尼,迫使喇叭的振动始终根据信号的波形去振动。[font=宋体][size=10.5pt]乙类功放的阻尼不能有效的控制扬声器,对任意半周只有一臂输出在工作,或推或挽,但不能同时工作,所以它的阻尼是单方向的,即无论正半周或负半周,他只有产生推动扬声器工作的动力,而不能产生控制回来的拉力,要全方位阻尼,驱动电流必须及时换向。[/size][/font][/size][/font][/size][/font]
[font=宋体][size=10.5pt][font=宋体][size=10.5pt][font=宋体][size=10.5pt] 综合以上原理,要对喇叭产生最好的阻尼能力,甲类功放最理想,无论是晶体管还是电子管。当然由于成本的原因,大多数厂家都停止了对晶体管甲类功放的生产,但电子管功放之中,依然有很多纯甲类输出的型号,比如300B ,211,845,805。而且国产的价格也不贵,素质比同价格的晶体管在综合性能,特别在阻尼能力上强多了。[/size][/font][/size][/font][/size][/font]
[[i] 本帖最后由 沈摄影师 于 2010-3-10 12:28 PM 编辑 [/i]]
2010-3-10 10:52 AM
shiwei25
[quote]原帖由 [i]沈摄影师[/i] 于 2010-3-10 10:37 AM 发表 [url=http://www.av199.com/redirect.php?goto=findpost&pid=2973839&ptid=277766][img]http://www.av199.com/images/common/back.gif[/img][/url]
shiwei25兄:功率放大器对喇叭震膜的惯性质量的控制能力,是通过功率放大器的电阻尼系数来决定,但阻尼系数并不是越高越好,阻尼系数应该“恰当”,这个观念你必须要纠正。之所以很多发烧友都认为 ... [/quote]
谢谢摄影师,学习了:141
2010-3-10 04:24 PM
shiwei25
Mr Tony Brady:
the damping factor for the 3010S integrated is just greater than 100, if it means the control force of the 3010s integrated is very ordinary?
thank you!
Dear Wei Shi
a damping factor greater than 100 means an output impedance of less than 0.08 ohms when refered to an 8 ohm load. The speaker leads would have an impedance much higher than this。on the contrary the damping factor is very good, many amps have a damping factor a lot less than this。
best regards
Tony
Mr Tony Brady:
by the way, what's the difference between the 3010s and 3010s2?
Dear Wei Shi
the 3010S2 uses a new pre amp board and input switching with relays. Perhaps you could listen to one with your speakers and see what you think
best regards
Tony
Mr Tony Brady:
The last question, do you spend 70 percentage of your work time for listening muic or spend 70 percentage of your work time for circuit design? ^_^
Dear Wei Shi
Usually I'm listening to music as I work so it's equal
best regards
Tony
呵呵,我英语很烂,但是Tony先生很有耐心:loveliness:
2010-3-10 05:01 PM
SMERT
人家环境多好,一边工作一边听音乐,爽啊!
2010-3-11 10:59 AM
沈摄影师
[quote]原帖由 <i>SMERT</i> 于 2010-3-10 05:01 PM 发表 <a href="http://www.av199.com/redirect.php?goto=findpost&pid=2974824&ptid=277766" target="_blank"><img src="http://www.av199.com/images/common/back.gif" 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(this.src);}" onmousewheel="return imgzoom(this);" alt="" /></a><br /><br />人家环境多好,一边工作一边听音乐,爽啊! [/quote]<br /><br />人家是社会主义好哇?我们还是资本主义初级阶段,有得听听就算可怜你了。不过老外给你得回答也是捣倒浆糊
[[i] 本帖最后由 沈摄影师 于 2010-3-11 11:01 AM 编辑 [/i]]
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