www.gippro.com

 SPECIFICATIONS
Nominal diameter                                    : 380mm.15in
Nominal Impedance                                 : 8 ohm
Program Power                                        : 400w
Continuous Power (RMS)                           : 300w
Sensitivity (1w/1m)                                  : 97.5dB
Frequency range                                      : 43 – 3KHz
Voice coil diameter                                   : 49.5mm
Voice coil length                                       : 14mm
Magnet dimension                                    : 156mm x 20mm

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--- BassBox Pro Version 3.03, Export Thiele-Small Format
--- May 20,2009,  Wed 6:05PM
--- GPA 1550
--- Parameters marked with ** are not tested using the WT2
--------------------------------------------------------
--- mechanical ---
Fs          33.559E+00 Hz       Free air resonance
Qms          5.115E+00          Q mechanical
Vas        129.476E-03 m^3      Suspension compliance
Cms        124.290E-06 m/N      1/(suspension stiffness)
Mms        180.962E-03 kg       Moving mass
Rms          7.460E+00 kg/s     Mechanical resistance
Xmax **      0.000E+00 m        Maximum acoustic linear motion
Xmech**      0.000E+00 m        Mechanical displacement
Dia        330.200E-03 m        Piston diameter
Sd          85.634E-03 m^2      Piston area
Vd   **      0.000E+00 m^3      Displacement volume
--- electrical ---
Qes          1.313E+00          Q electrical
Re           5.790E+00 ohms     Voice coil DC resistance
Le           1.016E-03 Henries  Inductance @1 kHz
Z           10.947E+00 ohms     Impedance @1 kHz
BL          12.970E+00 Tm       Motor force - Newtons/Amp
Pe   **      0.000E+00 W        Max Electrical Power
--- electro-mechanical ---
Qts          1.045E+00          Q total
no         350.107E-03 %        1/2-space ref efficiency @ 1m/1W
1-W SPL     87.460E+00 dB       sensitivity at 1m on-axis
2.83V SPL   88.864E+00 dB       sensitivity at 1m on-axis
  --- motor constants ---
Krm        561.041E-06 ohms     constant resistive motor impedance
Erm        915.468E-03          exponent resistive motor impedance
Kxm         10.727E-03 Henries  constant reactive motor impedance
Exm        692.798E-03          exponent reactive motor impedance
--- End BassBox Pro Export ---

                             
MATERIALS
Basket                                                   Steel
Cone and dust cap                                  Paper
Surround                                                Thread coat
Voice coil wire                                         Copper
Voice coil bobbin                                     KSV.