Visaton GF200-2X4OHM
[GF 200-4+4] Avis/Critiques
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:
30 l ; 1x BR 25.50
50 l ; 1x BR
25.50
70 l ; 1x BR 25.50
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)
Maximum cone displacement 20 mm
Resonance
frequency fs (1) 32 Hz
(2) 30 Hz
(3) 32 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 20 mm
Cutout diameter 190 mm
Net
weight 2,5 kg
D.C. resistance Rdc (1) 3,0 Ohm
(2) 5,8 Ohm
(3) 1,5 Ohm
Mechanical Q factor Qms (1) 4,53
(2) 4,12
(3) 4,42
Electrical Q
factor Qes (1) 0,76
(2) 0,37
(3) 0,41
Total Q factor Qts (1)
0,65
(2) 0,34
(3) 0,38
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 T m
(2) 9,2 T m
(3) 4,6 T m
Inductance of the voice coil L (1) 0,7 mH
(2) 1,3 mH
(3) 0,3 mH
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