Znom
The nominal impedence of the speaker
Revc
The DC voice coil resistance of the speaker measured in Ohms.
Krm
This is one of the two motor impedence constants which control the AC resistance losses in the electro-dynamic motor. Krm is the resistance constant and Erm is the resistance exponent. This will produce an Rem resistance value that increases with frequency. This value is expressed in milli Ohms.
Kxm
This is one of two motor impedance constants which control the inductance reactance in the electro-dynamic motor. Kxm is the inductance constant, and Exm is the impedance exponent. This will produce an Lem inductance value that decreases with frequency. This value is expressed in milli Henries.
Erm
This is one of two motor impedance constants which control the AC resistance losses in the electro-dynamic motor. Krm is the resistance constant, and Erm is the resistance exponent. This will produce an Rem resistance value that increases with frequency.
Exm
This is one of two motor impedance constants which control the inductance reactance in the electro-dynamic motor. Kxm is the inductance constant, and Exm is the impedance exponent. This will produce an Lem inductance value that decreases with frequency.
Sd
This parameter is the equivalent piston area of the speaker.
BL
This parameter is the product of magnetic flux density multiplied by the length of wire in that flux. This is essentially the strength of the electromagnetic motor. The units are Tesla-Meters.
Vas
Vas is an acoustic volume which has the same compliance of the speaker, relative to the piston area.
Cms
Cms is the mechanical compliance of the speaker's suspension system. The units are micro Meters per Newton (uM/N).
Mms
The value Mms represents the mechanical mass of the diaphragm plus the radiation mass of a free-air load.
Mmd
The value Mmd is the actual mechanical mass of the diaphragm alone.
Fo
The resonance of the speaker if mounted on an infinite baffle.
Qms
This is a Q value that reresents the mechanical losses in the suspension system. In reality this actually represents all resistive losses other than Revc in both the electrical and mechanical speaker device. Q values have no units.
Qes
This is a Q value that represents the electrical losses from Revc losses in the suspension system. Q values have no units.
Qts
Total Q of driver at fo, considering all driver resistances; Q values have no units.
Xmax
Peak linear displacement of driver cone.
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Definitions for the different measurements are courtesy of
LinearX
.
TREO Engineering © 2002-2008