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rollei

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再降价出头版经典耳机！最后的机会

jyecdd

友情帮顶

rollei

感谢搂上好意。

musicforever

990还没人要，lz实在实在想出给我吧

musicforever

忘了先货

fd001

支持白菜，抵制先货

musicforever

原帖由 fd001 于 2010-12-15 08:25 发表
支持白菜，抵制先货

只先货

davidxtb

帮顶，无需纠结于头版，毕竟头版的价格要贵很多。LZ如果不是刻意强调是头版的，只说是好声的老版耳机，或者实话实说是第几版的，一样可以卖个好价钱。

K241算是K240系列的一个发展版本，算是K240系列的旁支，有些另类，绝对算不上头版，毕竟和K240SEXTETT EP还是不同，EP算是K240系列的头版吧。至于做工的话，从耳机线就可以看出来了，SEXTETT本身用的是四股合一的线（四根独立的线并起来），而K241用的是麻花线，一个麻花外皮内裹多根耳机线，做工和SEXTETT的四股合一的线有很大差别，这也是后来AKG一些老版用的线，算是SEXTETT那种线的廉价版本。耳机单元的调音孔也用的是纤维材料，而非振膜，也算是廉价版本了。更严格的来说，K241算是AKG 的K240DF的一个试验性质的过渡版本，声音虽然是K240系列的，但是在为DF系列试验一些新的材料。
K240SEXTETT的四股合一耳机线

K240SEXTETT 的四股合一耳机线

K241的麻花线

K241的耳机线，麻花线

至于K250，更不能算是头版了，它的头版应该是REALITIC PRO50，AKG 给Radio Shack代工的东西，后来AKG在那只耳机的基础上发展了自己的K250。关于REALISTIC PRO50的说明见http://bbs.headphoneclub.com/vie ... =&highlight=&page=7 LZ给的那个链接上关于K250的表述应该有问题，这款耳机并非K240系列的分支。关于K240系列的发展脉络详见http://bbs.headphoneclub.com/viewthread.php?tid=140380&highlight=K240S

至于三黑三白耳机，算是不错，但和三白三蓝耳机的差距不过是一耳朵的事情，单元老化导致的声音素质下降是另外一码事。入手的头版M（三白三蓝调音孔）有三只，听过一支，第二版的M（三白三黑）入手三只，听过两只。这么多M耳机中，也就是FD001入手的那只三白三蓝的M听起来比三白三黑（那只M是从录音室内拿出来）的差，当时判断可能是单元老化，声音闷。不知道FD001的结论是否是从那只耳机处得来。

单元本身作为区分版本的标准并无问题，但耳机外观的东西只可辅助标识。毕竟买过单边麻花线的DF，结果是新版的单元，也见过双边麻花线的DF结果是第三版的单元的。

[ 本帖最后由 davidxtb 于 2010-12-15 14:18 编辑 ]

fd001

大胸又来讲课了，哈哈。晕，还提到我那只啊，已经出掉了。那只就算比你的其他版本差点，也应该比后期的m好点吧。我主要是喜欢df的声场和感觉，对m的味道相对来说不如df有感觉而已。具体只说m的话，还是很好的耳机。50周年的橄榄枝版本也很不错。可惜不舍得听，纯收藏了。

另外我看到的有些资料，好象显示241对240的改变，虽然是基于降低成本的因素，但是最后被市场部认可了，而后继的耳机是240m不是df啊。好象240sextett到241的试验，再到240m的定型，是一个传承顺序。df应该是这个时期之中另外的一个概念产品。

davidxtb

那个表述不是很准确，应该是K240SEXTETT到DF和M之类的耳机的过渡，算是实验性的耳机。
那只M不是比我那只差，而是比一般的第二版M都差，毕竟手里好几只第二版M了。至于是否比后面的新版好，不作评论了。
不过那些M都出掉了，只留下头版的两只，其中一只定给湖南一朋友。
但头版的声音，只要单元本身没有问题，还是比第二版的好的。
这些耳机EBAY上经常有出，要买并非难事，实在不是什么罕见的东西。

[ 本帖最后由 davidxtb 于 2010-12-15 16:59 编辑 ]

rollei

唉，怎么能随口呢，或许论坛上谎言太多了，也无所谓了？
一。“至于K250，更不能算是头版了，它的头版应该是REALITIC PRO50““？
这网上的流言，你再加工一下？ REALITIC PRO50  算是REALITIC最高档的（专业）耳机，上有”Made in Austria",故有人推测是AKG代工的，虽是推测，可能性是很高的，因为：内部结构相同，声音风格相同，且K250比PRO50 推出早。
二。“应该是K240SEXTETT到DF和M之类的耳机的过渡”？
那K242又是怎么回事呢？
K241耳机我在上次贴中已说明，不多说了。有孔带的K241我至少有6个（另外还有无孔带的）。这个DIN插座的K241我有证据确定是K241第一批推出，故说。
三。至于EBAY上的事我并不关心和知情。听说（只是听说）EBAY上枪支都有买。但我可断定，只能卖千元或以下的东西，肯定无人炒作（炒作意味撒谎），因为国际间的邮费动辄就要数百元。
三。双线K240DF我就不想多说了，更不敢说“头版”。因为还有疑惑。手中有单线K240DF当年购入比双线还早，但不能确定生产比双线早，双线只是早期推出一批，故稀少，有盒的（包括单线，用同样的盒子）更少，因为专业（公司）用的东西一般不会去保存包装盒。

谢谢关注。

fd001

大家还是停留在技术讨论比较好，不要夹杂其它不相干的东西，这样对双方比较礼貌，也有助于彼此取长补短。daxiong给与了我很多帮助，而rollei的丰富收藏和了解也为我增加了很多资料。既然都有同样的爱好，不如诚心交流，而不要各执一词。毕竟大家都是摸索着来。

1、250我没研究，没听过，没把玩过，向各位学习。

2、根据老玩家的介绍，1975年，K240系列的最初型号K240推出，即240sextett Cardan，之后大概相同时期，还陆续生产销售过K241 Cardan和K242 Cardan等版本。241是对240的改进版本（这个说法同样还有外文资料证实）。但是rollei说是早年K240的德国版本。这个目前是有矛盾的。所以我觉得还可以再讨论，出示有利的证明。
而242为240在法国销售版本的别称。这个是我掌握的资料。

3、双线K240DF是否头版，我觉得akg公司最有发言权，那么我们来看看公司给予的回答，原文是德文，可以自行翻译
Hallo Herr Braun,

vielen Dank für Ihre Anfrage. Glückwunsch zu dieser echten Rarit?t! Im Prinzip hat Ihr Freund schon Recht dass AKG normalerweise eine einseitige Kabelzuführung bevorzugt.
Aber wo eine Regel, da gibt es Ausnahmen. Ihr K 240 DF stammt aus der Erst-Serie, die Anfang/Mitte der 80er Jahre noch in Einzelfertigung hergestellt wurde. Bei dieser wurden Y-Kabel verwendet. In dieser Qualit?tsklasse kommen F?lschungen auch kaum vor - der Aufwand w?re viel zu hoch und würde in den typischen Anwenderkreisen (Rundfunkanstalten, Studios) sofort auffallen. Im Anhang finden Sie ein altes Produktbild auf dem die beidseitige Kabelzuführung noch erkennbar ist.

übrigens: die meisten Ersatzteile dieses Kopfh?rers wie z.B. H?r-Kapseln, Ohrpolster, Kopfband und die beidseitigen Gummizüge sind immer noch lieferbar!

Viel Spa? weiterhin mit dem K 240 DF :-)

[ 本帖最后由 fd001 于 2010-12-15 21:24 编辑 ]

davidxtb

原帖由 rollei 于 2010-12-15 19:28 发表
唉，怎么能随口呢，或许论坛上谎言太多了，也无所谓了？
一。“至于K250，更不能算是头版了，它的头版应该是REALITIC PRO50““？
这网上的流言，你再加工一下？ REALITIC PRO50  算是REALITIC最高档的（专业）耳机 ...

网上大把的资料，我以为你会去找一些权威的资料看看，然后再来谣言不迟。
比较权威的一些的资料见这个链接http://wiki.faust3d.com/wiki/index.php?title=AKG_K240_Series&printable=yes
引用的内容：
Non-AKG-branded Sextett headphones AKG made headphones or provided Sextett driver assemblies for other companies:
Philips N6330
User Satshanti from head-fi.org discovered and tracked down information about them:.
Realistic Pro 50
AKG manufactured headphones for the American electronics retail chain Radio Shack under Radio Shack's Realistic brand name. The Pro 50s have a distinctive body design; the headband is a single ridged plastic band rather than two stiff wires, and the outer ear cups are covered with decorative aluminum shells with six holes in them. The driver assemblies are K240 Sextetts.
AKG's own-branded model of this is the K250, the most obvious difference being the black outer ear cups, but there may be differences in the drivers as well.


关于K240的资料详见：
http://www.akg.com/forum/index.php/topic,1749.msg5329.html#msg5329

Re: K240 Studio history                                                                                                                                                « Reply #5 on: March 27, 2007, 11:59:59 AM »

                                                                                                                Hi, finally here you are:
The first K240 was introduced in 1975. From its design it looked similar to the K240 models we know from current production. Only the metal rings over the ear cups were of silver colored polished aluminum and the inner headband was perforated. Like in the recent version K240 Monitor a 32mm driver was used but it was surrounded by 6 passive radiators. Each radiator consisted of a membrane attached to a perforated disc covered with carefully selected acoustical friction material. Conventional circum-aural headphones often have a resonance peak in the upper bass region followed by a more or less significant bass roll off. The result: an unnaturally sounding boomy bass. The resonant frequency of the passive radiators in connection with the relatively high friction of the damping material behind these membranes effectively influences this irregularity in the frequency range.

In the region of the bass boost the membranes become transparent to sound waves and thus reduce the air pressure in the coupling cavity between capsule and ears. In that way the bass boost is leveled out. Below this boost-frequency the membranes block the sound waves and the roll-off is compensated. This acoustic principle was invented by Dr. Goerike, co-founder of AKG.

The first K240's had a four core cable and were available in two connector versions. One had the standard 6,3 mm stereo jack while the other carried a 5 pin connector according to the German DIN standard. This plug was known as Wuerfelstecker (Wuerfel = dice) because the 5 pins were arranged like the dots of a dice. The advantage was that the connector could be plugged into an amp or TV set in two directions. One caused the internal speaker to be turned off, while in a 180-degrees turned position both speaker and headphones were on. For this trick it was necessary to have all four terminals of the headphone drivers connected to the plug.

In France the K240 was named K242 for marketing reasons and during the first years of it's production.

Headphones with the same working principle as the K240 but with individual design were built by AKG for Philips (N6330), Saba (H200) and Uher (W774 and W775).

Although the first series of the K240 were a great success, there were certain discussions among the experts at AKG if the same effect as achieved by the passive radiators could be reached or even surpassed by a different design possibly less critical in production. This brought the introduction of the K241 where instead of the passive radiators only various sound ports covered by acoustically resistive material were used. The dynamic drivers were surrounded by apertures closed by carefully selected friction materials with various values of perviousness related to the acoustic impedances of the outer ear. The K241 was introduced in 1979.

Soon after the introduction of the K241 it's principle of the variable acoustic resistors – patented by AKG – was applied to the K240 as well and replaced the passive membranes.

In 1984 AKG introduced the K240DF, acoustically equalized to the diffuse sound field.  The K240DF refers to such a sound field present in a reverberation chamber using third-octave filtered pink noise and measured in the close vicinity of the ear drum with a measuring probe. The work of the IRT - Institut für Rundfunktechnik (Institute for Broadcast Technology) in Munich proposed a standard for headphone-monitoring calling for the diffuse field equalization of monitoring headphones coming closest to loudspeaker monitoring, because there existed no current IEC or CCIR standard for such a system. Especially at times, when program material is exchanged between stations internationally and the monitoring facilities may vary it looks extremely sensible to exclude the varying acoustical parameters of the different monitoring rooms and refer to standardized headphone monitoring when comparing program material.

The K240 Monitor as made from 1984 to 2006 was based on the K240 without passive membranes but with the ear related resistive sound ports. It's earshells were decorated with gold colored metal parts and a three core cable with universal 6,3/3,5 mm (1/4" and 1/8") plug was attached.

In 1997 when AKG celebrated it's 50th anniversary the "K240 Jubilee" in limited edition was made. Acoustically a K240M, it had different nameplates and came with a booklet with a short history of AKG.

In 2002 the 'Studio' Series of headphones was launched. A newly developed capsule with low impedance makes these products especially suitable for portable equipment. The cable is easily detachable. The first series had a minijack connection while from 2003 on a miniXLR-connection between earshell and cable is used. In the same year the closed version of the K240 Studio called K 271 was released.

davidxtb

你何苦打着头版的旗号出来卖东西，是什么就是什么，能怎么了？
你老兄的出价并不高，老版的耳机卖这个价钱也算是合理。但说法确实有欠考虑。

另外，关于双线DF的那个德语，GOOGLE翻译了一下，狗屁不同。凑合看吧。
布朗先生您好，

谢谢你询价。在此真正Rarit祝贺？T!原则上，你的朋友是不错，平时喜欢AKG的一根电缆。
但是，在一个规则，因为也有例外。您的K240 DF是从第一个系列，80年代初至中期的是，在订单生产仍在生产。有了这个Y型电缆被使用。 ？这种质量等级为F假冒不过来之前 -瓦特的努力重新太高，将站在用户的（广播，电影公司）立即典型的群体呢？。随信附上的双面电缆料的老产品图像仍然辨认。

顺便说一句：这RERS耳机大部分地区一样？ ħ？ř胶囊，耳垫，两侧帽和橡皮筋仍然可用！

[ 本帖最后由 davidxtb 于 2010-12-15 22:01 编辑 ]