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本帖最后由 hjzhang6801 于 2013-2-26 16:51 编辑
本帖试图将已有的相关资料总结在一起,以待有缘人进一步开拓。
先看一下厂家的公开信息。
Features:
World's smallest number of parts - 9 parts per channel ( excluding attenuators );
World's shortest signal pass length - 32 m/m ( including the length of parts );
World's shortest NFB loop length - 9 m/m ( including the length of the resistor );
World's smallest filter/condenser - 1000μF, (50W version - 2200μF);
Powerful voltage regulation with high capacity transformer - 170 VA cut-core transformer +-individual coils;
Dual mono construction with each channel in a separate chassis;
Rigid and compact aluminum chassis construction to release vibrations smoothly;
Separate 12-position attenuators for each channel;
Can be up-graded into a pair of complete mono amplifiers by adding another Model 4700 Power Humpty。
Specifications:
Output power: 25W+25W ( 8) (50W version : 50W+50W)
Input impedance: 22k ( unbalanced only )
Attenuators: 12-steps for each channel
Output on and off switches for each channel
Dimensions:
Model 4706 170(w)x40(h)x100(d)m/m
Model 4700 130(dia.) x195(d) m/m
厂家网站公布的价格
price on the right indicates the new price starting Oct.1/2011
Shigaraki Series
Model 4716 CD Transport $2,550
Model 4715 DAC $2,000
Model 4717 Integrated Amplifier $2,550
Model 4718 Phono $2,250
Reference Series
Model 4706 Gaincard Amplifier Unit $1,850
Model 4713 Flatfish CD transport unit $4,400
Model 4705 Progression DA Converter unit $3,400
Model 4705-G Progression/Gemini DA Converter unit $4,500
Model 4712 Phonocube Phono Equalizer Unit $2,750
Model 4704 PiTracer CD transport Unit (with one Power Humpty) $32,500
Model 4700 Power Humpty Power supply (50W version $2,800) $2,250
Model 4799 Power Dumpty Power Supply $2,250
Model 4707 Input Chooser Selector Box $1,000
Model 4724 Koma Turntable $12,000
Model 4725 Tsurube Tonearm $2,250
Model 4708 OTA Cable Kit $800
Model 4719 Speaker Cable $800/8ft pair
$1,000/10ft pair
Model 4722 Lens Speaker System $2,500/pair
Model 4723 MC Bee $1,500
Konus Audio "Essence" Speaker system $5,000/pair
采用LM1875设计的4706是放大单元,要和电源单元4700配合,$1850+$2250=$4100,是美刀,不是人民刀。
这个功放是不是HiFi——进了美国发烧天书,B级器材榜单。
国外玩家的拆解图片,很多。
这其中有线路图还有拆机图片。不一一细分了。
再上一个泰国老烧的DIY旅程,因为是泰国语网站,用图片说话吧,比较有代表性。帖子的地址:http://www.rexdiy.com/smf2/index.php?topic=432.0
整个DIY过程分为几大步,这也为我们的探索指明了方向。
第一步:线路板复刻,电位器复刻,装机,测试
第二部:机壳复刻,装机,测试
第三部:换变压器变压器。
这个帖子 的代表性在于楼主有两台真机,拆一台听一台。而且与我想象不同的是,这个楼主居然用4706推的是大喇叭,照片超大,上不去,又不会减像素,感兴趣的烧友到网站去看看吧。前两部应该是不太满意,才有的第三部。实在是不懂泰国语,也不知道最后的结果怎么样。 |
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