来看看这个2寸低音单元 - 各类扬声器设计室 - 声学楼论坛

Name

Value

Unit

Comment

Electrical Parameters

7.35

Ohm

electrical voice coil resistance at DC

0.297

frequency independent part of voice coil inductance

0.135

para-inductance of voice coil

1.00

Ohm

electrical resistance due to eddy current losses

Cmes

104.65

µF

electrical capacitance representing moving mass

Lces

25.17

electrical inductance representing driver compliance

Res

29.09

Ohm

resistance due to mechanical losses

98.1

driver resonance frequency

Mechanical Parameters

(using laser)

Mms

2.142

mechanical mass of driver diaphragm assembly including air load and voice coil

Mmd (Sd)

2.117

mechanical mass of voice coil and diaphragm without air load

Rms

0.704

kg/s

mechanical resistance of total-driver losses

Cms

1.230

mm/N

mechanical compliance of driver suspension

Kms

0.81

N/mm

mechanical stiffness of driver suspension

4.52

N/A

force factor (Bl product)

Lambda s

0.136

suspension creep factor

Loss factors

Qtp

0.379

total Q-factor considering all losses

Qms

1.875

mechanical Q-factor of driver in free air considering Rms only

Qes

0.474

electrical Q-factor of driver in free air considering Re only

Qts

0.378

total Q-factor considering Re and Rms only

Vas

0.2750

equivalent air volume of suspension

0.053

reference efficiency (2 pi-radiation using Re)

79.41

characteristic sound pressure level (SPL at 1m for 1W @ Re)

Lnom

79.78

nominal sensitivity (SPL at 1m for 1W @ Zn)

rmse Z

4.62

root-mean-square fitting error of driver impedance Z(f)

rmse Hx

3.36

root-mean-square fitting error of transfer function Hx (f)

Series resistor

0.00

Ohm

resistance of series resistor

12.57

diaphragm area

以下是引用wsf912在2007-05-12 08:58:39的发言：

来看看这个2寸低音单元,用于开口箱,各位高手给点意见吧. 图片点击可在新窗口打开查看


Name	Value	Unit	Comment
Electrical Parameters
Re	7.35	Ohm	electrical voice coil resistance at DC
Le	0.297	mH	frequency independent part of voice coil inductance
L2	0.135	mH	para-inductance of voice coil
R2	1.00	Ohm	electrical resistance due to eddy current losses
Cmes	104.65	µF	electrical capacitance representing moving mass
Lces	25.17	mH	electrical inductance representing driver compliance
Res	29.09	Ohm	resistance due to mechanical losses
fs	98.1	Hz	driver resonance frequency

Mechanical Parameters
(using laser)
Mms	2.142	g	mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd (Sd)	2.117	g	mechanical mass of voice coil and diaphragm without air load
Rms	0.704	kg/s	mechanical resistance of total-driver losses
Cms	1.230	mm/N	mechanical compliance of driver suspension
Kms	0.81	N/mm	mechanical stiffness of driver suspension
Bl	4.52	N/A	force factor (Bl product)
Lambda s	0.136		suspension creep factor

Loss factors
Qtp	0.379		total Q-factor considering all losses
Qms	1.875		mechanical Q-factor of driver in free air considering Rms only
Qes	0.474		electrical Q-factor of driver in free air considering Re only
Qts	0.378		total Q-factor considering Re and Rms only

Vas	0.2750	l	equivalent air volume of suspension
n0	0.053	%	reference efficiency (2 pi-radiation using Re)
Lm	79.41	dB	characteristic sound pressure level (SPL at 1m for 1W @ Re)
Lnom	79.78	dB	nominal sensitivity (SPL at 1m for 1W @ Zn)

rmse Z	4.62	%	root-mean-square fitting error of driver impedance Z(f)
rmse Hx	3.36	%	root-mean-square fitting error of transfer function Hx (f)

Series resistor	0.00	Ohm	resistance of series resistor
Sd	12.57	cm	diaphragm area

有些参数很让人吃惊,低Q低FS 对小单元来说没什么实际的意义,要是贴上曲线,能更好的品味一下! 图片点击可在新窗口打开查看

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