L版:如果Linkwitz老大今天再设计Orion的话,还会选原来的单元吗?中低音与高音分频点在1440hz,1寸高音能承受, ...
hya1951 发表于 2011-12-16 13:28 http://bbs.hifidiy.net/images/common/back.gif
H大，上面这些视频都是最近的，Orion从2002年设计出来到目前一直在更新，最近发布的第62次更新是今年的11月20号，就是采用了新的L26低音单元和新的结构。
关于单元的选择，老林的说法是目前选用的都是适合这种形式音箱（障板加推挽）所能找到的最好的单元，以前未能设计Orion就是因为找不到符合标准的单元，言外之意。。。你懂得
H大，上面这些视频都是最近的，Orion从2002年设计出来到目前一直在更新，最近发布的第62次更 ...
lakerblue 发表于 2011-12-16 13:50 http://bbs.hifidiy.net/images/common/back.gif
为了严谨一点,又上了Seas的官网,E0011的手册上的推荐的频率下限是2000Hz,考虑到一般的厂商总是把自己产品的性能加以夸张表述,我们一般都不敢用足的,但Linkwitz老大不但敢用足,还敢大大超越,将手册上的推荐的频率下限是2000Hz的E0011用到1440Hz!佩服!
T35的辐射面积是E0011的1.7倍,手册上的推荐的频率下限是1500Hz,应该是非常适合的单元,不过要贵很多.
仔细欣赏Orion的设计思路,发现Linkwitz老大非常重视分频点对于离轴响应的影响,大于对失真度的影响,E0022的手册上的推荐的频率上限是2000Hz,如果是一般人,肯定将分频点设为2000了
为了严谨一点,又上了Seas的官网,E0011的手册上的推荐的频率下限是2000Hz,考虑到一般的厂商总是把自己产品 ...
hya1951 发表于 2011-12-16 14:14 http://bbs.hifidiy.net/images/common/back.gif
关于单元的选择，老林是这么回答的，1440HZ/24 dB/oct 的分频点选择主要是为了考虑8寸的中音单元
Q6 - Why did you not use driver XYZ?
A4 - One of the objectives for the ORION was to design it as a 3-way system. A 2-way system would have a restricted low frequency range or have insufficient output. A 4-way system would have added complexity and cost, yet not improved the speaker's performance for the intended application. Thus, I looked for tweeter, midrange and woofer drivers that had the necessary volume displacement, polar response in an open baffle, low stored energy, and low non-linear distortion. In addition the drivers must be available world-wide. The Peerless 10" diameter XLS woofer, 830452, has large excursion capability, very low air turbulence noise, relatively low distortion, limits safely, has very low Qts due to a strong motor, and is ruggedly built. The 8" diameter magnesium coned Seas W22EX001 Excel midrange has exceptionally low linear- and non-linear distortion over the 120 Hz to 1400 Hz frequency range used. Since the 8" driver is mounted on an open baffle of carefully designed size it has much wider dispersion at 1400 Hz than the same driver in a closed box with the same frontal baffle. I would have had to use two 6.5" drivers in a less favorable MTM arrangement to obtain the same low frequency volume displacement, yet the the narrower open baffle would have yielded little benefit in off-axis response. The 8" midrange is matched to the Seas T25CF002 Millennium 1" soft dome tweeter, which has a smooth frequency response, low stored energy, wide dispersion and can be crossed over at a low 1400 Hz through 24 dB/oct filters. The low crossover frequency is dictated by the distortion and open baffle response for the midrange driver. A ribbon driver in place of the dome tweeter would have narrower vertical dispersion, could not be crossed over as low in frequency and would be less rugged. The Millennium tweeter uses ferro-fluid in its voice coil gap for improved heat transfer to the pole piece. This reduces thermal compression from continuous high sound and amplifier power output levels which raise the voice coil temperature and thus the coil resistance. For example, a rise in coil temperature from 20 0C to 70 0C (68 0F to 158 0F) would reduce the tweeter output level by about 1.5 dB. Since the midrange driver voice coil is likely to heat too, the tonal balance would essentially remain unchanged and the insufficient increase in output level would not be noticed.
I consider the drivers used for the ORION to be state-of-the-art. I have not seen, heard and tested drivers that would make me change them, though I keep looking for any worthwhile improvement.
关于单元的选择，老林是这么回答的，1440HZ/24 dB/oct 的分频点选择主要是为了考虑8寸的中音单元 ...
lakerblue 发表于 2011-12-16 14:39 http://bbs.hifidiy.net/images/common/back.gif
从1440Hz到2000Hz差不多是1/2倍频程,查了我以前分析的喇叭频率,冲程与功率之间的函数关系,频率下降1/2倍频程,同样的声压,喇叭冲程要大1倍,而功率则为4倍,老林的24db/Otc的分频器在1/2倍频程时比通常的12db/Otc的分频器对于低频要多衰减6db,正好是电压2倍,功率4倍.所以E0011使用还是合理的.
不是喜欢钻牛角尖,而是觉得象Orion这样既成功又另类的东西,肯定是有他成功的道理的.
特敬仰老林
:handshake谢谢版主分享，学习了
{:3_80:}很强悍
楼主，2012过半了，你的作品~~~
看起来不错
继续关注,期待广州音响展上能见到.
回复 89# usb502
上了老林的网页，又有新作品了。
好文 得学习学习！
这2个低音推挽 是否是把整个房间来当着工作空间，？
电子分频的声场更好一点看来是共同的感觉了
才看到这个开口箱体的设计，个人认为电子分频更加准确，声音清晰度高（我做过二分电子分频），这个开口箱体的设计和障板有共同之处，声场好。愚以为低音指向性少，低音完全可以用常规的到相箱，就不需要复杂的低音分频补偿电路，普通的3分频、4分频就可以。
涨知识了！！！！！！！！！！！