是的，上次刚刚收的。
这款耳机之前帮陆大用我的EBAY帐号拍过一支，在我这儿听了一些时日，感觉很不错:D :D :D
原帖由 davidxtb 于 2010-4-20 12:22 发表 http://bbs.headphoneclub.com/images/common/back.gif
是的，上次刚刚收的。
这款耳机之前帮陆大用我的EBAY帐号拍过一支，在我这儿听了一些时日，感觉很不错:D :D :D
:D
把橄榄枝那只耳机的图发过来
值得收藏的一只耳机吧
[ 本帖最后由 davidxtb 于 2010-4-27 03:14 编辑 ]
:Q
橄榄枝虽然风格有些特殊，但价值主要在收藏
橄榄枝啥味儿？
和平味呗？
要听过才会明白到底是什么味道，风格差不多是在SEXTETT和M之间的一种，比较像AKG后期的耳机，但限量版的好处则是调音方面感觉比较精致一些。
和240M差不多的味
这耳机也就是从M生产线上拿零部件生产的，所以外观和M非常接近，单元结构也非常接近，只是声音有些区别而已。
至于价值吗，还是收藏价值大于实际价值，由其是对于喜欢AKG的人来说:lol :lol :lol
SEXTETT 用前面的挡板的形状作为区别版本的话，还是有些不太靠谱，仍然需要参考单元来判断版本。见这只MP
:lol :lol :lol
如果还能买到的话。橄榄枝06年偶尔看到有人出，后来几乎绝迹。
把昨天整理了一下AKG K240系列的资料，转录过来
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.
这就是SEXTETT，1975年生产的是K240SEXTETT EP
In France the K240 was named K242 for marketing reasons and during the first years of it's production.
这个是K242，不同于后来的K242HD，当然重复使用这个型号名称，也说明当时的K242在它的产品序列中无足轻重。
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.
这个是K241，一款已经可以看到第一版DF和M单元结构的耳机
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.
这就是DF，可以看看1984年版本的DF和今天的有什么不同
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.
这个就是M，可以看看头版的M和今天的M有什么不同
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.
这就是S，你很难说这只耳机的结构和当时的那些老耳机已经有什么相同之处了。
[ 本帖最后由 davidxtb 于 2010-4-28 09:56 编辑 ]
新入一把紫砂壶，大亨掇只，是自己最喜欢的壶型
[ 本帖最后由 davidxtb 于 2010-4-28 23:28 编辑 ]
最近也在研究这个，应该是紫泥，模具壶，价格应该不贵，自己使用很实惠:D
原帖由 ej07 于 2010-4-28 22:54 发表 http://bbs.headphoneclub.com/images/common/back.gif
最近也在研究这个，应该是紫泥，模具壶，价格应该不贵，自己使用很实惠:D
这壶的价格还可以，但老兄是看走眼了。
泥料是宜兴一厂四号井底曹青老泥，壶是杜燕君的全手工壶;P;P;P
自己用的，没有追求太高，但老兄MS对壶的研究并不多。不知道从什么地方看出来这个是模具壶？
模具壶帮同事买过，以前在学校读书的时候，偶尔会南京夫子庙那边买过几把，现在也养的差不多。最老的一把用了五六年了。自己现在再买，不会再去买模具壶了。
紫泥也分三六九等，见资料：
原矿紫泥分：头槽清、二槽清与底槽青。清水泥和底槽青属于同一层面的紫泥，顾名思义，底槽青就是这个层面最底层的泥料，相对来说量少质佳，固且此矿已塌方，存世量更少。几百年来，很多名壶都用此泥而成。清水泥就是紫砂矿层的中底部。清水泥和底槽青如何来区分：一般来说这就需要很丰富的经验了。但是我们可以告诉您的是：可以看两种泥料养成后的“润”来区分。清水泥养成后的色泽较“燥”；底槽青养成的色泽较“润”。
原矿黄龙山特级底槽青，此料存世量已经极少，(四号井已塌方)，该泥料为顾景洲大师生前最喜爱的泥料！温和素雅，茶汤清气悠扬、时间长久，养泡以后，泥色由棕色变成朱肝色。
[ 本帖最后由 davidxtb 于 2010-4-28 23:31 编辑 ]
