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一些emp耳放的资料 [复制链接]

1#
作为一个歌德党,LZ YY这个耳放很久了,可惜售价一点都不亲民,再加上灯泡的价格,实在是没敢想,直到一天LZ看到的坛子里的一篇帖子,里面有一张emp的版图,于是LZ终于有能力实现土炮emp的想法了,,,然后是抄板什么的。。。最后就装了台成品。

土炮


声音居然还不错,在LZ完全乱选的元件。。LZ试过更换输出耦合电容,声音有所变化。
下面是我找到的一些emp,ems的资料,欢迎补充。


这张图是emp原版拆机。

emp


emp原版的薄膜电容均是wima的 ,电解是bc,轴向滤波电容不清楚,电位器是100lps,其他都是一些渣渣料,从这张图里我们可以看出,emp的焊工十分差劲,请大家引以为鉴。
emp的电源是7va的双19输出。


这张是ems的拆机,更清楚。
ems


电位器100K,电解是bc搭另外一种,明显体积大一点,估计容量也大一些。轴向是飞记的021,(不超过十块钱。。。)ems的电源比emp大一些,但是数值不清楚。反正所有元件里就alps最贵,所有元件一起不超过100。。

电路图:(有改动)
pcb
  


倍压整流电路,串联电子管,星形接地,大家都BS的缩水胆电路。管他呢,声音好听就行。
emp,ems,earmax的电路可能是完全一样的,变动的只有元件,电阻,电源。

这个机器的调音应该重点落在管子上,元件的作用有限,earmax各版本用的管子也不同,没有人在相同的管子下AB过,是吧。

emp用的管子是两根ecc88/6jd8/6922,一根ecc81/12at7。ems一样。





大家肯定都注意到标题的后半部分了,那么把地址pm给我把,我发pcb给你们,但是只有 25张,所以每人一张,快递只发顺丰到付。如果有需要,pcb可以以后再做。

pcbb



这张pcb比原机器的要大一点,特别是轴向电容,达到了40X20,(原版31),为了塞补品而已。

pcb有一点小问题,alps的电位器上面有一个突起,需要在pcb上面开个孔,用尖一点的东西钻个孔就是,很简单的。

pcb上面的数据全部都是emp原版抄下来的,自己装的话可以做调整,但是轴向电容耐压要高于40V,电解要高于50V。

个人认为完全仿原机没有意义,根据自己喜欢的声音搭配才是王道。所以,勇敢的磨机吧,反正原版机器用的也很一般。欢迎大家一起来交流心得。

胆机是需要煲的,不要相信一耳朵听感哦,静下心来,会有惊喜的。


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Onlineshop Home » EARMAX Brocksieper » EARMAX-Silver Edition Headphone-Amplifier by Brocksieper


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EARMAX-Silver Edition Headphone-Amplifier by Brocksieper
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Price€ 839,00
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Partnumber: EARMAX-SE
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EARMAX-Silver Edition Headphone-Amplifier by BrocksieperEARMAX-Silver Edition Headphone-Amplifier by Brocksieper
You enjoy music with headphones? If so then make sure to try the EARMAX made by Brocksieper. This little tube driven Headphone-Amplifier will be your ultimate listening experience.
The most direct and natural listening experience is waiting for you.

The EARMAX series will be your ultimate listening experience with pure tube design (Class A single-ended triodes, output transformerless (OTL) design). These masterpieces are handcrafted in the small manufacture of Stefan Brocksieper. The EARMAX gained worldwide reputation as one of the best, probably the best, tube headphone mplifier ever made. The EARMAX opens new dimensions and astonishing details which are amazing even for the owners of reference class phones.

EARMAX:
- Class-A-single-ended-Triode
- Outputtransformerless (OTL) design
- Premium Selected Tubes
- straight elegant design
- dimension: 10x9x9.5cm only
- use for: Dynamic Headphone
- external powersupply for 220-250V
- made in Germany

EARMAX Silver Edition:
- higher volume with significantly upgraded external powersupply
- especcially designed for dynamic headphones with low Z (min. impedance 16 Ohm) or lower efficiency
- especially recommended for Grado phones like Grado RS 1 oder AKG 701
- 12db more headroom vs. the Earmax Pro
- Chassis design: silver


EARMAX amps in general are OTL design (OutputTransformerLess). The actual output power and quality is depending on the load connected. Low impedance (low Z) headphones draw a lot of current and this requires a higher current power supply.
The lower the headphones impedance is, the higher the power of the OTL amplifier is needed.
The Brocksieper EARMAX Silver Edition headphone amp is optimised for this and comes with a very strong power supply. The SE is the identical design like the Brocksieper Anniversary model (just silver instead of gold hardware and no flightcase) known and prised for its outstanding performance among HiFi enthusiasts.


specifications: Brocksieper EARMAX Silver Edition
Tube headphone amp for dynamic phones. OTL design Class A triodes technology, external power supply.
All tube circuit with miniature double-triodes vor signal amplification and output stage (ECC81 and E88CC/6922).
All tube tested and selected by Mr. Brocksieper personally.
All Brocksiper devices are completely `Made in Germany´, in small series manufacturing.
Each amplifier is tested, measured and burned-in prior to shipping.
The EARMAX can handle open circuit (no load/phons connected) as well as it is almost perfectly protected against shortage.
frequency range: 4 Hz - 1 MHz (600 Ω load)
7 Hz - 0,6 MHz (35 Ω load)
frequency response: 20-20000 Hz +/- 0,1 dB
distortion factor: (THD): < 0,1% (RL = 35 Ω) max.
< 0,03 % (RL = 35 Ω) typ.
< 0,1 % (RL = 600 Ω) max.
< 0.002 % (RL = 600 Ω) typ.
crosstalk: < -80 dB / 10 kHz
difference-frequency-distortion (DFD): ca. -73 dB (RL = 35 Ω)
humm, vol. max.: < -85 dB,
Ri: 20 Ω
signal-to-noise ratio: > 95 dB
outputpower: > 50 mW (eff.)
power consumption: 16 VA
weight: 410 g (amplifier<), 800 g (external power supply)
limited warrantie: 3 years except the tubes
Note: This unit can be used with all dynamic headphones with impedance ≥ 16 Ω.

----------------------------------------------------------------------
more products made by BROCKSIEPER:

EARMAX PRO: - higher volume with upgraded powersupply
- especcially designed for dynamic headphones with
impedance: absolute minimum impedance 35 Ohm, recommended for headphones with 200-2000 Ohm impedance.

PHONOMAX by Brocksieper: - phonostage amplifier providing
the most direct and natural vinyl listening experience.
Combined with the EARMAX this is the perfect match for any vinyl and headphone enthusiast

more matching products and alternatives: list of recommendationsEARMAX Brocksieper EARMAX-PRO Headphone-Amplifier by Brocksieper
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