GF 200 - 2 x 4 Ohm


Art. No. 1330


20 cm (8") High-End woofer with black glass fibre cone, solid aluminium die-cast basket and elastic rubber surround. Designed for multi-purpose applications due to 2 x 4 ohms double voice-coil, with excellent properties as 8 ohms drivers in series configuration. The long stroke voice-coil in conjunction with the extended rear pole plate, the vented damper, the vented magnet and the capton voice-coil carrier guarantees long strokes and highest power handling.


Possible connections:

  • (1) one voice coil not connected
  • (2) both voice coils in series
  • (3) both voice coils in parallel

 

Recommended cabinets

Volume/Principle BR-Channel fb
30 l/bass reflex BR 25.50 40 Hz
50 l/bass reflex BR 25.50 31 Hz
70 l/bass reflex BR 25.50 27 Hz

Technical Data

Rated power 120 W
Maximum power 180 W
Nominal impedance Z (1) 4 Ohm
(2) 8 Ohm
(3) 2 Ohm
Frequency response fu–8000 Hz
(fu: Lower cut-off frequency depending on cabinet) .
Mean sound pressure level (1) 85 dB (1 W/1 m)
(2) 88 dB (1 W/1 m)
(3) 88 dB (1 W/1 m)
Opening angle (-6 dB) 46°/4000 Hz
Excursion limit +/−10 mm
Resonance frequency fs (1) 34 Hz
(2) 30 Hz
(3) 35 Hz
Magnetic induction 1,3 T
Magnetic flux 930 µWb
Height of front pole-plate 6 mm
Voice coil diameter 38 mm
Height of winding 18 mm
Cutout diameter 190 mm
Net weight 2,5 kg
D.C. resistance Rdc (1) 2,9 Ohm
(2) 5,8 Ohm
(3) 1,4 Ohm
Mechanical Q factor Qms (1) 4,51
(2) 4,12
(3) 4,33
Electrical Q factor Qes (1) 0,93
(2) 0,37
(3) 0,44
Total Q factor Qts (1) 0,77
(2) 0,34
(3) 0,39
Equivalent volume Vas (1) 62 l
(2) 68 l
(3) 57 l
Effective piston area Sd 214 cm²
Dynamically moved mass Mms 25 g
Force factor Bxl (1) 4,6 Tm
(2) 9,2 Tm
(3) 4,6 Tm
Inductance of the voice coil L (1) 0,4 mH
(2) 1,1 mH
(3) 0,3 mH
Show all data

sketch

directivity pattern

waterfall spectrum