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斯巴克A88T摩机,现场直击 [复制链接]

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离线sanyue
 
只看楼主 倒序阅读 0 发表于: 2005-06-25
— mawhole_move —

2005-1-21 主页的内容

为了让感兴趣的朋友更多的了解A88T的摩机情况,特别进行这个活动。
    
    
    
    
    
    这是原版的新机器。
    
    
    
    这是所用的电子管,应该是国产的产品,曙光的,斯巴克定制。
    
    
    
    前级管,6sl7,6sn7
    
    
    
    换上了卡达斯的耦合电容
    
    
    
    用BONA 6N线做滤波旁路电容的引线。
    
    
    
    后级管,KT88
    
    
    
    机器是带遥控的
    
    
    
    这是选择显示,带后级功能的。
    
    
    
    管子的整体旁落
    
    
    
    机器的背面
    
    
    
    接线柱
    
    
    
    有前级输入的功能,机器可以作纯的后级使用。
    
    
    
    这是喇叭接线柱和机器编号
    
    
    
    摩机以前的机器底版内部
    
    
    
    耦合电容和旁路电容部分
    
    
    
    
    
    这是耦合电容,原来是0.1UF的
    
    
    
    
    
    旁路电容,0.33和0.1的?
    
    
    电源部分
    
    
    
    
    
    这是将要安装上去的电容,用卡达斯的含银焊锡。
    
    
    
    卡达斯双面金箔特富龙介质,0.22UF的,比原版要大一些,为的是低频的量感,让声音润泽一些。
    
    
    
    
    MIT ppfxs的0.33和0.1做旁路,让声场更加的宽大和稳定。
    
    
    
    这是超级勇哥提供的,西电银云母的老电容,是并在滤波电容上的,以提升高频的细腻和量感,弥补耦合电容加大带来的高频减少,对整体声音的圆润也有帮助。
    
    支架是爱音乐兄帮助做的,在此感谢!
    
    
    
    这是摩机使用的焊锡。
    
    
    
    
    
    这是滤波旁路电容的连接线,BONA 6N线
    
    
    
    
    
    卡达斯耦合电容换上了。
    
    
    
    再换旁路的电容。
    
    
    
    0.33 MIT PPFXS
    
    
    
    0.1 MIT PPFXS
    
    
    
    再给滤波电容并上银云母的小电容
    
    
    
    搞好了底版
    
    
    
    换个角度看看。
    
    
    
    
    
    开声试试,检查底盘的状况。
    
    
    
    一起正常,放放声音。明天继续。
    
    换管子了:
    
    
    
    这次上了新的EH6922金脚6SN7
    
    
    
    KT88上的是JJ的蓝屏。
    
    
    
    这就是EH的6922金脚
    
    
    
    这是58年的前苏联的6H9C,替代6SL7。
    
    
    
    机器上前级管子的样子
    
    
    
    这是KT88蓝屏在机器上。
    
    
    
    换好了。
    
    接下来,还要试试EH6sn7金脚与原来用的前苏联6H8C的差别。
    
    
    
    结果还是这个老管子的声音感觉合拍一些。
    
    
    
    
    在推思奔达SP2/3红木版,感觉JJ蓝屏过于浓郁,有点展不开,换上了Svetlana的KT88
    
    
    
    换上去了,松弛了不少
    
    
    
    在仔细看看管子

享受生活,轻轻松松玩音响
玩音响,玩的就是电流和振动。
离线junjie
只看该作者 1 发表于: 2005-06-25
仔细看完非常欣赏,如果有M6的摩机报告就好了!
离线sanyue
只看该作者 2 发表于: 2005-06-27
呵呵,我们对M6的兴趣不是很大,A50T可能会有更多的玩法,M6更多的他中口味。
享受生活,轻轻松松玩音响
玩音响,玩的就是电流和振动。
离线junjie
只看该作者 3 发表于: 2005-07-05
我已出掉M6打算买A50T就等您出它的玩机报告
离线sanyue
只看该作者 4 发表于: 2005-07-05
呵呵,A50T有很多的玩法,可以参考TA30的。

我们会慢慢的介入很多的,你刚刚买的机器就要再煲一些时间,等器材差不多煲透了,再根据需要调整一下管子,等保修期差不多到了,再来调整耦合旁路电容什么的。
享受生活,轻轻松松玩音响
玩音响,玩的就是电流和振动。
离线junjie
只看该作者 5 发表于: 2005-07-06

A50T前级用Ei12Ax7+EH12AU7后级用EH EL34这样好不好,我感觉原机的EL34声音比较粗声音也比M6要暗一点

这样肯定是不错的,搭配合适,EL34是非常细腻的,决不是粗声的,也不会比M6暗的,相反会更加的活跃。

离线junjie
只看该作者 6 发表于: 2005-07-06
个人觉得三极接法音场收窄声音暗细节也少了,用超线性接法就好多了也不明白厂家默认三极接法搞的每次开机都要按遥控选择!
离线sanyue
只看该作者 7 发表于: 2005-07-06

下面是引用junjie于2005-07-06 09:31发表的:
个人觉得三极接法音场收窄声音暗细节也少了,用超线性接法就好多了也不明白厂家默认三极接法搞的每次开机都要按遥控选择!


 


是的,这个现象确实存在,我也向工厂反映过,可能大家考虑的出发点不一样吧。


不少的朋友也认为,非三极管的机器,还是优先超线性接法比较能够反映机器的特性。


 

享受生活,轻轻松松玩音响
玩音响,玩的就是电流和振动。
离线junjie
只看该作者 8 发表于: 2005-07-06
今天下午把A50T带到商家处试了EH EL34,EI 6CA7发觉EH的比原机的要暗一点晰力小点毛刺感也小一点EI就在各方面好一点但质感(贵气感)差了一些反而原配的EL34就有不告不失的感觉---有一点迷罔
离线liuns
只看该作者 9 发表于: 2005-07-06
EL34 review:http://www.thetubestore.com/el34review.html
EL34 Types Review

Home > Reviews > EL34 Types Review

Review Notes - how we conducted the review
Tube comparison table - reviews at a glance
EL34 Reviews

Review Notes
Tube reviews written by John Templeton.

It抯 not easy evaluating something as subjective as sound. We each have our own personal taste in music and the way it sounds. I have attempted to add some objectivity by defining some aspects of tube performance that affect any listener, regardless of application, budget or musical taste. The EL34 is a very popular tube and is used in equipment that creates as well as reproduces music. This testing was done using tube guitar amplifiers. With this in mind, consideration has been given to construction quality and mechanical noise. These factors are important to musicians but may not be an issue when a tube is used in the home or studio.

Test Amps:

1973 Marshall Super Lead model 1959 This amp is completely stock using NOS pre-amp tubes. The sound was reproduced through a 1971 Marshal cabinet with 4 Celestion G12M "greenback" speakers.

Class A Combo Designed and built by Bernard Raunig. This is a true single ended class A amplifier, using a 5Y3 rectifier and a single 5691 pre-amp tube. With a volume and single tone control this amp really lets you hear the tonal differences between the tubes.



EL34 comparison at a glance
Rated 0 - 5 where 0 is Poor and 5 is Excellent
Rows in gray are tubes used for reference
Manufacturer      Model      Noise /
Microphonics      Mechanical Noise      Detail      Harmonics
Siemens      EL34      

4
     

2
     

5
     

5
JJ (Tesla)      E34L      

4
     

4
     

3
     

4
Shuguang      EL34-B      

4
     

5
     

4
     

5
Electro Harmonix      EL34EH      

4
     

4
     

5
     

4
Sovtek      EL34WXT      

4
     

4
     

4
     

4
S.E.D.      EL34      

4
     

4
     

5
     

5
Svetlana      EL34      

4
     

5
     

5
     

5


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EL34 Reviews

Shuguang EL34-B - For many years no one would have believed that Chinese tube factories could turn out work of this quality. The construction of this tube is first class, with a well-supported plate structure that rests in a large straight bottle that tapers to a well finished brown base. These tubes represent a very solid piece of construction with almost no mechanical noise and an overall feeling of quality.
The sound is loud and clear with a very nice sonic range. Not excessive in tops, mids, or bass, they are accurately described as well balanced. The sample tested had no audible microphonics and an average background noise level. Harmonic content was rich, lending that pleasant "swirl" and sustain that guitar players crave.
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Sovtek EL34WXT - Sovtek has come a long way with this tube since the EL34G. Construction has been improved greatly reducing mechanical noise. Very good sound but not in the same range as the Svetlana. It seems as if the frequency response has been shifted toward the midrange band. Harmonics are rich and fairly balanced but the high end can get a bit bright. Great in a darker sounding amplifier.
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Svetlana EL34 - The Svetlana is the perfect tube for classic rock. The midrange is very pronounced and the high end is smooth. The bottom end response is not the best, but in a guitar amp it becomes a moot point. In the test amp the mids just rip through the mix. No guitar player is going to get lost in the mix using these bottles. These tubes deliver incredible crunch making them perfect for that ZZ Top, old EVH sound. Seven string down-strokers may not be as pleased because they don't have that crushing deep bottom end. (Note: the amp used for this review was done in a 100 watt Marshall JMP)
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S.E.D. EL34 ("C" Logo) - If you want one tube that will do anything the Svetlana is money well spent. There is ample bass response but it is firm and controlled. The mids are smooth and the top end shimmers. Nice swirling harmonic content. The construction of the tube is outstanding and I feel it contributes to the overall performance. Lots of clean headroom from this tube with a smooth transition into breakup. Probably great in home audio applications, but if you want raunch at lower volume levels keep reading.
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Tesla (JJ) E34L / EL34 - JJ is the new name for the Teslovak (Tesla) tube company. A good general purpose EL34. As previously mentioned, the sound is well balanced with tight bass response and great mids. Early on we had issues with mechanical noise however later stock has been much improved and noise is no longer a worry.
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Tube Reviews and all site contents Copyright
离线junjie
只看该作者 10 发表于: 2005-07-07
看了个大概明白,应该是说曙光的管子是不差的,非常谢谢,有一个问题想问一下Sanyue斑竹,A50T直接用6L6行不行,因实在怀念M6的声音
离线sanyue
只看该作者 11 发表于: 2005-07-07
A50T不可以直接更换,但调整一些就可以了。
享受生活,轻轻松松玩音响
玩音响,玩的就是电流和振动。
离线junjie
只看该作者 12 发表于: 2005-07-07
恳请斑竹教我一下,在这里先谢谢了
离线loyrepc
只看该作者 13 发表于: 2005-10-03
现在是否还提供该机摩机套件,价格如何?
离线sanyue
只看该作者 14 发表于: 2005-10-03
可以供的。

可能固定西电电容的架子没有了,还没有时间做呢。
享受生活,轻轻松松玩音响
玩音响,玩的就是电流和振动。
离线secdpt
只看该作者 15 发表于: 2005-10-04
下面是引用sanyue于2005-10-03 12:03发表的:
可以供的。
可能固定西电电容的架子没有了,还没有时间做呢。


那个架子固定起来不太容易,因为在固定架子的地方,刚好有个大概2mm高的台阶,还要去找合适的螺丝来固定架子。有个很简单的办法,有一种泡沫的双面胶,超市里文具类有的买的,就是那种粘在墙上的吊钩后面的那种不干胶的材质,大概2-3mm厚的。剪一小段粘上后,刚好和2mm高的台阶平了,然后把电容贴上去即可。既美观,又很牢固。我现在就是这么做的,效果很好。
离线sanyue
只看该作者 16 发表于: 2005-10-05
你这个方法很好的,自己完全可以这么做,不过,从我们的角度就不敢这样了,毕竟,有点怕时间长了,会有意外。
享受生活,轻轻松松玩音响
玩音响,玩的就是电流和振动。
离线secdpt
只看该作者 17 发表于: 2005-10-05
老赵的担心也不无道理,怕粘过了,到时候要清除干净不留痕迹不太容易。我也考虑过,呵呵,不过觉得应该问题不是很大,所以就干啦......
离线sanyue
只看该作者 18 发表于: 2005-11-23
现在我们用不干胶的扣子了,更加的方便了。
享受生活,轻轻松松玩音响
玩音响,玩的就是电流和振动。
离线罗汉果
只看该作者 19 发表于: 2005-11-30
老赵,我有一个疑问.就是安以上的磨机方法会不会破坏了整机各频段的平衡性啊?因为机器出厂时是经仪器检测调整好才出厂销售的.如果把里面的电容磨过会不会有我所提出的问题,会不会有点负面影响啊?菜鸟不解.谢谢!
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