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  

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
Frequency- and impedance response
Directivity pattern
Waterfall spectrum