SPECIFICATIONS
Power 2000W.+2000W.
Impedance 4 Ohm.+ 4 Ohm.
Frequency response 28Hz. – 1.3 KHz.
Sensitivity 1W / 1 M. 94 db.
Voice coil Dia. 75.5 mm.
Magnet Ferrite strontium 220mm. x 75 mm.
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-------------------------------------------------------- --- BassBox Pro Version 3.03, Export Thiele-Small Format --- May 04,2009, Mon 6:40PM --- GCB 18512 (2M) --- Parameters marked with ** are not tested using the WT2 -------------------------------------------------------- --- mechanical --- Fs 29.950E+00 Hz Free air resonance Qms 9.698E+00 Q mechanical Vas 95.117E-03 m^3 Suspension compliance Cms 45.181E-06 m/N 1/(suspension stiffness) Mms 625.020E-03 kg Moving mass Rms 12.129E+00 kg/s Mechanical resistance Xmax ** 0.000E+00 m Maximum acoustic linear motion Xmech** 0.000E+00 m Mechanical displacement Dia 393.700E-03 m Piston diameter Sd 121.736E-03 m^2 Piston area Vd ** 0.000E+00 m^3 Displacement volume --- electrical --- Qes 1.416E+00 Q electrical Re 2.964E+00 ohms Voice coil DC resistance Le 1.852E-03 Henries Inductance @1 kHz Z 16.093E+00 ohms Impedance @1 kHz BL 15.693E+00 Tm Motor force - Newtons/Amp Pe ** 0.000E+00 W Max Electrical Power --- electro-mechanical --- Qts 1.235E+00 Q total no 169.618E-03 % 1/2-space ref efficiency @ 1m/1W 1-W SPL 84.313E+00 dB sensitivity at 1m on-axis 2.83V SPL 88.625E+00 dB sensitivity at 1m on-axis --- motor constants --- Krm 14.137E-03 ohms constant resistive motor impedance Erm 700.406E-03 exponent resistive motor impedance Kxm 39.237E-03 Henries constant reactive motor impedance Exm 655.587E-03 exponent reactive motor impedance --- End BassBox Pro Export --- 
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Model | A | B | C | D | E | F | G | GCM-622 | 166.5mm. | 143mm. | 155mm. | 100mm. | 27mm. | 9mm. | 71mm. | GCM625 | 166.5mm. | 143mm. | 155mm. | 100mm. | 27mm. | 9mm. | 71mm. | GCM-645 | 166.5mm. | 143mm. | 155mm. | 120mm. | 35mm. | 9mm. | 77mm. | GCM-850 | 205mm. | 183mm. | 194mm. | 120mm. | 35mm. | 9mm. | 93mm. | GCB-1040 | 260mm. | 233mm. | 247mm. | 156mm. | 66mm. | 11mm | 140mm. | GCB-1050 | 278mm. | 238mm. | 255mm. | 180mm. | 70mm. | 18mm. | 140mm. | GCB-1242 | 314mm. | 277mm. | 295mm. | 156mm. | 66mm. | 11mm. | 155mm. | GCB-1252 | 318mm. | 280mm. | 295mm. | 225mm. | 77mm. | 18mm. | 163mm. | GCB-1255 ND | 320mm. | 280mm. | 295mm. | 203mm. | 0 | 18mm. | 197mm. | GCB-1560 | 395mm. | 351mm. | 370mm. | 225mm. | 77mm. | 18mm. | 202mm. | GCB-1565 | 395mm. | 351mm. | 370mm. | 225mm. | 95mm. | 18mm. | 217mm. | GCB-15653 | 395mm. | 351mm. | 370mm. | 225mm. | 120mm. | 18mm. | 245mm. | GCB-18512 | 470mm. | 427mm. | 448mm. | 225mm. | 95mm. | 19mm. | 248mm. |
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