SPECIFICATIONS
Nominal diameter : 300mm. 12"
Nominal Impedance : 8 ohm.
Program Power : 300w.
Frequency range : 45Hz. – 6KHz.
Voice coil diameter : 49.5mm.
Magnet dimension : 156mm x 20mm
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--------------------------------------------------------
--- BassBox Pro Version 3.03, Export Thiele-Small Format
--- May 20,2009, Wed 4:42PM
--- GPA 1250
--- Parameters marked with ** are not tested using the WT2
--------------------------------------------------------
--- mechanical ---
Fs 50.587E+00 Hz Free air resonance
Qms 5.563E+00 Q mechanical
Vas 39.478E-03 m^3 Suspension compliance
Cms 98.058E-06 m/N 1/(suspension stiffness)
Mms 100.943E-03 kg Moving mass
Rms 5.768E+00 kg/s Mechanical resistance
Xmax ** 0.000E+00 m Maximum acoustic linear motion
Xmech** 0.000E+00 m Mechanical displacement
Dia 260.350E-03 m Piston diameter
Sd 53.236E-03 m^2 Piston area
Vd ** 0.000E+00 m^3 Displacement volume
--- electrical ---
Qes 787.586E-03 Q electrical
Re 6.493E+00 ohms Voice coil DC resistance
Le 926.730E-06 Henries Inductance @1 kHz
Z 11.229E+00 ohms Impedance @1 kHz
BL 16.263E+00 Tm Motor force - Newtons/Amp
Pe ** 0.000E+00 W Max Electrical Power
--- electro-mechanical ---
Qts 689.906E-03 Q total
no 609.727E-03 % 1/2-space ref efficiency @ 1m/1W
1-W SPL 89.869E+00 dB sensitivity at 1m on-axis
2.83V SPL 90.776E+00 dB sensitivity at 1m on-axis
--- motor constants ---
Krm 320.297E-06 ohms constant resistive motor impedance
Erm 960.586E-03 exponent resistive motor impedance
Kxm 23.647E-03 Henries constant reactive motor impedance
Exm 621.491E-03 exponent reactive motor impedance
--- End BassBox Pro Export --- |
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Model
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A
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B
|
C
|
D
|
E
|
F
|
G
|
|
GMB-612
|
166mm.
|
143mm.
|
155mm.
|
100mm.
|
28mm.
|
4mm.
|
70mm.
|
|
GMB-615
|
166mm.
|
143mm.
|
155mm.
|
100mm.
|
28mm.
|
4mm.
|
70mm.
|
|
GML-836
|
205mm.
|
183mm.
|
195mm.
|
120mm.
|
40mm.
|
5mm.
|
97mm.
|
|
GPA-1033
|
257mm.
|
233mm.
|
248mm.
|
120mm.
|
40mm.
|
5mm.
|
100mm.
|
|
GPA-1036
|
257mm.
|
233mm.
|
248mm.
|
120mm.
|
40mm.
|
5mm.
|
100mm.
|
|
GPA-1239
|
306mm.
|
266mm.
|
290mm.
|
120mm.
|
40mm.
|
5mm.
|
120mm.
|
|
GPA-1245
|
306mm.
|
283mm.
|
290mm.
|
140mm.
|
35mm.
|
5mm.
|
120mm.
|
|
GPA-1250
|
315mm.
|
280mm.
|
295mm.
|
156mm.
|
40mm.
|
5mm.
|
130mm.
|
|
GPA-1277ND
|
320mm.
|
283mm.
|
295mm.
|
-------------
|
65mm.
|
10mm.
|
130mm.
|
|
GPA-1550
|
392mm.
|
358mm.
|
375mm.
|
156mm.
|
40mm.
|
5mm.
|
155mm.
|
|
GPA-1564
|
392mm.
|
358mm.
|
375mm.
|
180mm.
|
40mm.
|
5mm.
|
155mm.
|
|
GPA-1575
|
392mm.
|
358mm.
|
375mm.
|
180mm.
|
45mm.
|
5mm.
|
160mm.
|
|
GPA-1580
|
397mm.
|
360mm.
|
380mm.
|
156mm.
|
45mm.
|
15mm.
|
148mm.
|
|
GPA-1899
|
460mm.
|
435mm.
|
445mm.
|
220mm.
|
65mm.
|
7mm.
|
210mm.
|
|
GPA-18100
|
476mm.
|
423mm.
|
448mm.
|
220mm.
|
80mm.
|
10mm.
|
215mm.
|
|
GPA-18125
|
476mm.
|
423mm.
|
448mm.
|
270mm.
|
80mm.
|
10mm.
|
221mm.
|
|
GPA-2199
|
540mm.
|
493mm.
|
517mm.
|
220mm.
|
80mm.
|
10mm.
|
250mm.
|
|
GPA-2125
|
540mm.
|
493mm.
|
517mm.
|
270mm.
|
65mm.
|
10mm.
|
240mm.
|
|
GPA-2155
|
545mm.
|
497mm.
|
520mm.
|
300mm.
|
110mm.
|
15mm.
|
280mm.
|
|
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