本人刚学音箱设计和分频，有问题请教？

绿竹

  本人有一款喇叭（6.5罗纹黑光珠点盆）的测试曲线，是用LMS做的，但很多数据不知道是什么，做什么用的。特向各位大虾请教。
Revc=7.200 ohm        Fo=52.862 Hz      Sd=13.273 mM     Md=12.500 g
BL=5.929T         Qms=5.339    Qes=0.910    Qts=0.778  No=0.266%   SPLo=86.3DB
Vas=16.949L    Cms=677.527 u M/N     Krm=379.708u Ohm  Erm=1.057
Mms=13.379 g     Mmd=12.5g     Kxm=11.660m H      Exm=0.779
问题1：除Fo,Sd,Qms,Qes,Qts,Vas,Cms以外的数据都不懂。请告知。
问题2：分频点是如何确定的，需要那些数据？

liyusheng

Revc--直流电阻  SPLo--应该是灵敏度
分频点要从多方面考虑，要综合高音的频响范围，低音的频响范围，高音的功率承受能力，音色的取向，分频器的模拟需要单元上箱后的频响曲线，相位曲线，阻抗曲线。

大牛

LMS 不是有汉化版吗？

绿竹

多谢版主和大牛哥的回复,因为喇叭厂给我的就是这样的,请教大牛哥MS的软件和汉化有下载的吗?另外,如果有人懂这些参数是什么的话,请告知,本人不胜感激.

大牛

LMS 的中国代理处可以下载汉化版。
LMS 的英文版可到 HI-HFROOM 下载，下载安装后可在线升级。

绿竹

多谢大牛哥的回复,如果你能直接告诉我这些参数是什么就更好了.

一意孤行

Revc------音圈直流电阻 （Re--直流电阻  vc--音圈）     
Md--------好象振动系统质量？
BL--------磁隙的磁通密度×磁隙内导线总长度（BL积）      
No--------效率  
SPLo------灵敏度（1M/1W）
Krm-------？  
Erm-------？
Mms-------等效震动质量？     
Mmd-------？   
Kxm-------？   
Exm-------？
从来没动过拉姆斯，许多也不懂。不过听别人说拉姆斯的参数名称确实很乱

ljxdw21

Motor Impedance Parameters
Krm - This parameter is used by the TSL and LTD models to define the
resistance constant of the motor impedance.
Frm - This parameter is used by the LTD model as a transition frequency
between the two different resistance slopes controlled by Drm and Erm.
Drm - This parameter is used by the LTD model to control the low frequency
slope (exponent) of the motor resistance.
Erm - This parameter is used by the TSL and LTD models to control the high
frequency slope (exponent) of the motor resistance.
Vrm - This parameter is used by the LTD model to control the change in motor
resistance due to voltage. It is an exponent.
Trm - This parameter is used by the LTD model to control the change in motor
resistance due to temperature. It is a temperature coefficient.
Kxm - This parameter is used by the TSL and LTD models to define the
reactance constant of the motor impedance.
Fxm - This parameter is used by the LTD model as a transition frequency
between the two different reactance slopes controlled by Dxm and Exm.
Dxm - This parameter is used by the LTD model to control the low frequency
slope (exponent) of the motor reactance.
Exm - This parameter is used by the TSL and LTD models to control the high
frequency slope (exponent) of the motor reactance.
Vxm - This parameter is used by the LTD model to control the change in motor
reactance due to voltage. It is an exponent.
Txm - This parameter is used by the LTD model to control the change in motor
reactance due to temperature. It is a temperature coefficient.

Physical Parameters
Znom - The nominal rated impedance of the transducer.
Revc - The DC voice coil resistance.
Sd - The equivalent acoustic diaphragm area.
Mmd - The physical mass of the diaphragm without air load.
Pmax - The nominal rated power of the transducer. This will be used to relate the
thermal resistance Rtvc assuming a failure temperature of 250C°. Various values
can be used here depending on what type of power behavior you wish to describe.
Rtvc - The thermal resistance of the voice coil. The value is related to Pmax as
described above. Adjusting this value will change Pmax and vice versa.
Xgap - The height of the magnetic field gap.
Xcoil - The height of the voice coil winding.
Xmax - The overhang or under hang of the coil outside or inside the gap. This is
generally thought of as the maximum peak linear travel. However for most
transducers there is no hard threshold between linear and nonlinear operation. More
often the nonlinearity shows a continuous increase with increasing excursion.
Xfrg - This parameter along with the previous three is used by the LTD model to
represent the location of the fringing field outside the gap.
Efrg - This parameter is used by the LTD model and controls the width of the
fringing field outside the gap.
BLo - This parameter is used by the LTD model and is the maximum BL product
with the voice coil at rest.

Suspension Parameters
Krs - This is a constant controlling the scaling of the suspension resistance. It is used
by the LTD model to determine the effective Rms value under operating conditions.
Xrs - This is an excursion constant controlling the nonlinear characteristics of the
suspension resistance. It is used by the LTD model to determine the effective Rms
value under operating conditions. It has units of Length.
Drs - This is an excursion exponent constant controlling the nonlinear slope
characteristics of the suspension resistance. It is used by the LTD model to
determine the effective Rms value under operating conditions.
Ers - This is a constant controlling the frequency dependent characteristics of the
suspension resistance. It is used by the LTD model to determine the effective Rms
value under various operating conditions. This exponent value controls a resistance
shift relative to frequency. Positive values cause the resistance to decrease with
increasing frequency.
Grs - This is a constant controlling the shape of the nonlinear characteristics of the
suspension resistance. It is used by the LTD model to determine the effective Rms
value under operating conditions.
Trs - The temperature coefficient of the suspension resistance. This is the change
in resistance vs. temperature. It is used by the LTD model to determine the effective
Rms value under operating conditions.
Kcs - This is a constant controlling the scaling of the suspension compliance. It is
used by the LTD model to determine the Cms value under operating conditions.
Xcs - This is an excursion constant controlling the nonlinear characteristics of the
suspension compliance. It is used by the LTD model to determine the effective Cms
value under operating conditions. It has units of Length.
Dcs - This is an excursion exponent constant controlling the nonlinear slope
characteristics of the suspension compliance. It is used by the LTD model to
determine the effective Cms value under operating conditions.
Ecs - This is a constant controlling the frequency dependent characteristics of
the suspension compliance. It is used by the LTD model to determine the
effective Cms value under operating conditions. This exponent value controls
a compliance shift relative to frequency. Positive values cause the compliance
to decrease with increasing frequency.
Gcs - This is a constant controlling the shape of the nonlinear characteristics of
the suspension compliance. It is used by the LTD model to determine the
effective Cms value under operating conditions.
Tcs - The temperature coefficient of the suspension compliance. This is the
change in compliance vs. temperature. It is used by the LTD model to
determine the effective Cms value under operating conditions.

Dependent Parameters
Mms - This is the equivalent total mechanical moving mass of the transducer.
It includes the radiation mass (air-load) as well. If you do not have mechanical
diaphragm values (Cms, Mms, etc.) you can compute a generic set of values
based on the known SPL and electrical parameters using the SPL Mech button.
Cms - The equivalent mechanical compliance of the transducer. The units are
length per unit force, typically Meters/Newton. If you do not have mechanical
diaphragm values (Cms, Mms, etc.) you can compute a generic set of values
based on the known SPL and electrical parameters using the SPL Mech button.
Vas - The equivalent acoustic volume of the transducer. If you do not have
mechanical diaphragm values (Cms, Mms, etc.) you can compute a generic set
of values based on the known SPL and electrical parameters using the SPL
Mech button.
Rms - This is the mechanical resistance (losses) in the suspension of the
diaphragm. It is produced from the surround and spider characteristics.
Fo - The resonance frequency of the diaphragm and suspension.
BL - The product of magnetic flux density and length of wire in the flux. Typical
units are Tesla-Meters. BL is a measure of the electromagnetic strength of the
transducer motor. For the LTD model this parameter gives the BL at resonance with
the operating conditions.
Qms - This value is a measure of the mechanical losses in the suspension.
Qes - This value is a measure of the electrical losses in the voice coil.
Qts - This value is a measure of the total losses in the transducer.
Levc - This value gives the inductance of the voice coil or motor at 1kHz.
SPLo - This is the theoretical sensitivity in dBspl using 1W based on Revc at 1
Meter. It is relative to half space radiation.
ho - This is the conversion efficiency in % from electrical to acoustical energy.

Operating Condition Parameters
Vs - This is the drive voltage used to compute the dependent parameters in the LTD
model. Since many transducer characteristics are modeled as drive level dependent,
this voltage must be specified in order for other parameters to be computed.
Ta - This is the ambient temperature used to compute the dependent parameters in
the LTD model. Since many transducer characteristics are modeled as temperature
dependent, this value must be specified in order to compute other parameters.

绿竹

哇!这是什么啊,好难懂哦.

ljxdw21

这是用于LMS测量系统的喇叭参数，比较多，有的一般是用不到的，具体你可以问问大黄蜂兄，他有LMS测量系统，对此比较熟悉！