- 声学楼论坛 (http://nju520.com/bbs/index.asp)
-- 各类扬声器设计室 (http://nju520.com/bbs/list.asp?boardid=30)
---- 指导一下 (http://nju520.com/bbs/dispbbs.asp?boardid=30&id=3581)
-- 发布时间：2006-11-5 13:11:03
-- 指导一下
6寸半HiFi扬声器,请高手指点一下
客户
| Name | Value | Unit | Comment |
|---|---|---|---|
| Electrical Parameters | |||
| Re | 6.89 | Ohm | electrical voice coil resistance at DC |
| Le | 1.100 | mH | frequency independent part of voice coil inductance |
| L2 | 1.469 | mH | para-inductance of voice coil |
| R2 | 5.59 | Ohm | electrical resistance due to eddy current losses |
| Cmes | 252.20 | µF | electrical capacitance representing moving mass |
| Lces | 64.74 | mH | electrical inductance representing driver compliance |
| Res | 45.14 | Ohm | resistance due to mechanical losses |
| fs | 39.4 | Hz | driver resonance frequency |
| Mechanical Parameters | |||
| (using laser) | |||
| Mms | 16.381 | g | mechanical mass of driver diaphragm assembly including air load and voice coil |
| Mmd (Sd) | 15.54 | g | mechanical mass of voice coil and diaphragm without air load |
| Rms | 1.439 | kg/s | mechanical resistance of total-driver losses |
| Cms | 1.00 | mm/N | mechanical compliance of driver suspension |
| Kms | 1.00 | N/mm | mechanical stiffness of driver suspension |
| Bl | 8.06 | N/A | force factor (Bl product) |
| Lambda s | 0.066 | suspension creep factor | |
| Loss factors | |||
| Qtp | 0.37 | total Q-factor considering all losses | |
| Qms | 2.82 | mechanical Q-factor of driver in free air considering Rms only | |
| Qes | 0.43 | electrical Q-factor of driver in free air considering Re only | |
| Qts | 0.37 | total Q-factor considering Re and Rms only | |
| Vas | 24.0958 | l | equivalent air volume of suspension |
| n0 | 0.329 | % | reference efficiency (2 pi-radiation using Re) |
| Lm | 87.37 | dB | characteristic sound pressure level |
| rmse Z | 3.76 | % | root-mean-square fitting error of driver impedance Z(f) |
| rmse Hx | 2.30 | % | root-mean-square fitting error of transfer function Hx (f) |
| Series resistor | 0.00 | Ohm | resistance of series resistor |
| Sd | 130.70 | cm | diaphragm area |
我的
| Name | Value | Unit | Comment |
|---|---|---|---|
| Electrical Parameters | |||
| Re | 6.94 | Ohm | electrical voice coil resistance at DC |
| Le | 0.708 | mH | frequency independent part of voice coil inductance |
| L2 | 0.546 | mH | para-inductance of voice coil |
| R2 | 1.53 | Ohm | electrical resistance due to eddy current losses |
| Cmes | 266.95 | µF | electrical capacitance representing moving mass |
| Lces | 70.44 | mH | electrical inductance representing driver compliance |
| Res | 91.38 | Ohm | resistance due to mechanical losses |
| fs | 36.7 | Hz | driver resonance frequency |
| Mechanical Parameters | |||
| (using laser) | |||
| Mms | 11.256 | g | mechanical mass of driver diaphragm assembly including air load and voice coil |
| Mmd (Sd) | 10.371 | g | mechanical mass of voice coil and diaphragm without air load |
| Rms | 0.461 | kg/s | mechanical resistance of total-driver losses |
| Cms | 1.670 | mm/N | mechanical compliance of driver suspension |
| Kms | 0.60 | N/mm | mechanical stiffness of driver suspension |
| Bl | 6.49 | N/A | force factor (Bl product) |
| Lambda s | 0.039 | suspension creep factor | |
| Loss factors | |||
| Qtp | 0.398 | total Q-factor considering all losses | |
| Qms | 5.626 | mechanical Q-factor of driver in free air considering Rms only | |
| Qes | 0.427 | electrical Q-factor of driver in free air considering Re only | |
| Qts | 0.397 | total Q-factor considering Re and Rms only | |
| Vas | 42.9442 | l | equivalent air volume of suspension |
| n0 | 0.478 | % | reference efficiency (2 pi-radiation using Re) |
| Lm | 88.99 | dB | characteristic sound pressure level (SPL at 1m for 1W @ Re) |
| Lnom | 89.61 | dB | nominal sensitivity (SPL at 1m for 1W @ Zn) |
| rmse Z | 5.49 | % | root-mean-square fitting error of driver impedance Z(f) |
| rmse Hx | 2.17 | % | root-mean-square fitting error of transfer function Hx (f) |
| Series resistor | 0.00 | Ohm | resistance of series resistor |
| Sd | 134.78 | cm | diaphragm area |
-- 发布时间：2006-11-6 9:12:21
--
比较羡慕测试的仪器!
-- 发布时间：2006-11-6 9:52:12
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Qms相差较大,是否音圈用的材料不一样?
-- 发布时间：2006-11-6 17:35:03
--
客户只给了一个样品,随时可能拿回去,我没拆样品,我用的是铜线0.19
我用的是Klippel测的
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[此贴子已经被作者于2006-11-06 18:35:41编辑过]
-- 发布时间：2006-11-7 11:34:22
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能测量这么多参数,好啊!
-- 发布时间：2006-11-7 14:24:10
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参数和客样区别太大，客户如何要求的？copy?有没有要求阿?
-- 发布时间：2006-11-8 9:17:02
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相信LZ不是COPY吧？连SD都有相差，是不是连喇叭的尺寸都可以有相差？
-- 发布时间：2006-11-8 19:00:06
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客户只给我一个样品,还不能拆,我从现有的部件中找,只能找相近的了.我的是两层排线,我估计样品是四层排线的.谁能告诉我为何L1,L2,R2,Rms 相差那么大?
-- 发布时间：2006-11-14 20:29:27
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完全不相同的两只喇叭！！！
共同点是啥？
-- 发布时间：2006-11-14 21:20:30
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BL 值都差那么远的,如果磁路接近的话,音圈的层数都不对吧