[讨论]如何将45芯超重低音喇叭做到750W - 各类扬声器设计室 - 声学楼论坛

Name	Value	Unit	Comment
Electrical Parameters
Re	3.34	Ohm	electrical voice coil resistance at DC
Le	3.779	mH	frequency independent part of voice coil inductance
L2	5.526	mH	para-inductance of voice coil
R2	23.19	Ohm	electrical resistance due to eddy current losses
Cmes	1386.30	µF	electrical capacitance representing moving mass
Lces	26.66	mH	electrical inductance representing driver compliance
Res	50.01	Ohm	resistance due to mechanical losses
fs	26.2	Hz	driver resonance frequency

Mechanical Parameters
(using laser)
Mms	300.105	g	mechanical mass of driver diaphragm assembly including air load and voice coil
Mmd (Sd)	289.58	g	mechanical mass of voice coil and diaphragm without air load
Rms	4.329	kg/s	mechanical resistance of total-driver losses
Cms	0.12	mm/N	mechanical compliance of driver suspension
Kms	8.12	N/mm	mechanical stiffness of driver suspension
Bl	14.71	N/A	force factor (Bl product)
Lambda s	0.130		suspension creep factor

Loss factors
Qtp	0.72		total Q-factor considering all losses
Qms	11.40		mechanical Q-factor of driver in free air considering Rms only
Qes	0.76		electrical Q-factor of driver in free air considering Re only
Qts	0.71		total Q-factor considering Re and Rms only

Vas	85.9548	l	equivalent air volume of suspension
n0	0.194	%	reference efficiency (2 pi-radiation using Re)
Lm	85.09	dB	characteristic sound pressure level

rmse Z	11.80	%	root-mean-square fitting error of driver impedance Z(f)
rmse Hx	5.06	%	root-mean-square fitting error of transfer function Hx (f)

Series resistor	0.00	Ohm	resistance of series resistor
Sd	702.25	cm	diaphragm area


Name	Value	Unit	Comment
HINT :			Reduce Fmax to 20* fs to improve impedance fitting

U pp	0.77	V	peak to peak value of voltage at terminals
U ac	0.10	V rms	AC part of voltage signal
U head	56.1	dB	digital headroom of voltage signal
U SNR+D	41.1	dB	ratio of signal to noise+distortion in voltage signal
fu noise	5.9	Hz	frequency of noise maximum in voltage signal

I pp	0.08	A	peak to peak value of current at terminals
I ac	0.01	A rms	AC part of current signal
I head	63.1	dB	digital headroom of current signal
I SNR+D	21.9	dB	ratio of signal to noise+distortion in current signal
fi noise	1631.8	Hz	frequency of noise maximum in current signal

X pp	0.12	mm	peak to peak value of displacement signal
X ac	0.02	mm rms	AC part of displacement signal
X head	64.5	dB	digital headroom of displacement signal
fx cutoff	90.8	Hz	frequency of highest valid line in displacement signal

p pp		mV	peak to peak value of microphone signal
p ac		mV rms	AC part of microphone signal
p head		dB	digital headroom of microphone signal
p SNR+D		dB	ratio of signal to noise+distortion in microphone signal
fp noise		Hz	frequency of noise maximum in microphone signal

f sample	6000	Hz	sample frequency
N stim	8192	number of samples	stimulus length

主题：[讨论]如何将45芯超重低音喇叭做到750W