我玩JBL大喇叭--唯JBL18寸才能表达最完整的声音！！！

martin_wu

原帖由 wpdanny 于 2010-10-17 03:25 发表


加超高啊，，是要加超高，都玩到这个份上了。加2个说明那老外年纪不小，对高音耳背[s:14]
加超高的主要原因是取其音色平衡，就是追求其超高频质感，并不是一位追求高频上限。追求质感是一个更重要的因素。

那为何4344、4333等几乎所有的43系都要加2405超高呢？[s:18] 加超高绝对是耳背人士的必由选择[s:20] [s:41]

[ 本帖最后由 martin_wu 于 2010-10-18 15:55 编辑 ]

martin_wu

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原帖由 vnas 于 2010-10-17 12:38 发表
可以预见，这个帖子不久的将来又会是一个很好的技术贴，希望它能健康发展。
不过到目前为止，跟帖者除了楼主的对JBL很是了解，其它的估计就差劲点，martin_wu的帖子资料翔实，图片也很精彩，他发的很多帖子要是仔细 ...

我会逐步上一些技术资料，抛砖引玉，希望对真正研究技术的爱好者有用。

martin_wu

原帖由 AAAAA 于 2010-10-17 13:53 发表
那些年代因为具有丰厚的收入，JBL也是不断的在积累和进步，会不断修正改进的，如同奔驰车一样，是有血统的，也就是不断改进并一脉相承。

那你谈谈818、919是什么血统？你选择2042的依据？[s:31]

口腔医生

大喇叭大地方。

martin_wu

言归正传，其实46系是个不准确的说法，JBL有两个46：

Cabaret Series

4602A, 4612, 4623, 4625, 4628, 4662A, 4663A, 4680, 4691, 4695

4602B, 4604B, 4612B, 4625B, 4628B, 4691B, 4695B, 4698B, 4699B

Cinema Sound

4647

4670B, 4671, 4672A, 4673, 4674A, 4675A, 4676B-1, 4676B-2

4670A, 4671, 4673, 4675

其中cabaret素质较高，也较适合家用，国外玩家趋之若鹜。
老娘舅的大号角是影院之声4648。

[ 本帖最后由 martin_wu 于 2010-10-18 17:56 编辑 ]

martin_wu

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第一听到CAB系的声音时，真被惊呆了:funk: [s:41]
从未听过如此清脆、明亮、干净而富有光泽的声音，研究后才发现，他就是为乐器而生：
46988 Keyboard/Electronic Drum/
Reinforcement System
Designed for high level production of synthesizer,
electronic drum and full frequency-
range electronic instruments, the
46988 incorporates the El 55 460 mm (18
in) low frequency transducer, an El IO 250
mm (10 in) transducer, and 2404H high frequency
speaker. The 4698B is housed in
an optimally tuned reflex enclosure enabling
full power handling down to 35 Hz
for incredible punch and deep bass clarity
with exceptionally low distortion and wide
frequency range (35 Hz to 21.5 kHz). The
46988 features a rear terminal panel with
continuously variable tweeter level control
and self-switching biamplification inputs.
The 4 ohm system impedance of the
4698B makes maximum use of the power
transfer characteristics of most solid state
amplifiers, drawing twice the power of 8-
ohm systems, making ideal use of stereo
power amplifier channels.


最适合聆听钢琴、风琴、吉它、合成器，其次小号、萨克斯、唢呐，最后是人声。
老外说，他是JBL家族中少有的具有甜味的系统，原上草所说的黄昏感或许就是这种感觉。

[ 本帖最后由 martin_wu 于 2010-10-18 19:24 编辑 ]

martin_wu

看看老外用4628改造的音箱

martin_wu

D、K、E单体是JBL里程碑式的产品
用4628制作55000：

martin_wu

Take Some Work Out Of Being
A Working Musician
As a musician you know that your stage
show requires quality, high-performance
sound products. Products that let your
audience feel, as well as hear, every note.
Unfortunately, this kind of professional
performance has traditionally meant putting
up with massive, complex arrays of
equipment that could require hours of
extra work to set up and tear down.
At JBL we have the alternative for
you. We call it our Cabaret Series. And
it includes the most advanced compact
musical sound systems ever offered
by JBL.
Designed for Performance
We’ve developed each Cabaret system
around JBL musical instrument loudspeakers.
Speakers that are known by
musicians around the world for their
remarkable efficiency, reliability, and
power capacity. Next we matched those
components with,optimally tuned enclosures
that were engineered specifically for
each intended application. Finally, we
equalized each system to match the sound
characteristics of the instrument it will
reproduce.The result is a series of systems
that require very little power to operate
yet can handle high levels of program
material effortlessly. Systems that provide
an ideal balance between high performance
and practical size.
专为音乐家而生！

wpdanny

原帖由 martin_wu 于 2010-10-18 15:50 发表

那为何4344、4333等几乎所有的43系都要加2405超高呢？[s:18] 加超高绝对是耳背人士的必由选择[s:20] [s:41]

加超高的主要原因是取其音色平衡，就是追求其超高频质感啊，，，，为啥要分到7000HZ？？仅为增加高频上限，直接分到13000就可以了。。

另有一说，人耳对高频一般只能分辨到16000HZ，到21KH有啥用？？用身体感受还是只能心理感受？？听“咝~~咝”声?

魔声

老吴的图片很精彩，貌似日本人喜欢玩2405，美国佬喜欢2404。[s:125]

[ 本帖最后由 魔声 于 2010-10-18 19:55 编辑 ]

martin_wu

。。。。

martin_wu

原帖由 魔声 于 2010-10-18 19:52 发表
老吴的图片很精彩，貌似日本人喜欢玩2405，美国佬喜欢2404。[s:125]

请爆料[s:14]

martin_wu

原帖由 wpdanny 于 2010-10-18 19:44 发表


加超高的主要原因是取其音色平衡，就是追求其超高频质感啊，，，，为啥要分到7000HZ？？仅为增加高频上限，直接分到13000就可以了。。

另有一说，人耳对高频一般只能分辨到16000HZ，到21KH有啥用？？用身体感 ...

那为啥JBL的现代高级制品的频响一般都是40K，有的到了50K?[s:31]
你去研究一下4338、4348、66000.[s:14]

martin_wu

原帖由 魔声 于 2010-10-18 19:52 发表
老吴的图片很精彩，貌似日本人喜欢玩2405，美国佬喜欢2404。[s:125]

2404