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Thumbnail Filmstrip of GF 200 - 2 x 4 Ohm Images
Visaton Speaker Driver - GF 200 - 2 x 4 Ohm High End Dual Coil Woofer
Art. No. 1330
Visaton GF200 - 2 x 4 Ohm High End Dual Coil Woofer
Characteristics and Sound Properties
20 cm (8") High-End dual coil 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 = 4 Ohm
- (2) both voice coils in series = 8 Ohm
- (3) both voice coils in parallel = 2 Ohm
Technical Specifications
| Rated power | 120 W |
| Maximum power | 180 W |
| Nominal impedance Z | (1) 4 Ohm (2) 8 Ohm (3) 2 Ohm |
| Frequency response (fu: Lower cut-off frequency depending on cabinet) |
fu-8000 Hz |
| 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) |
| Dispersion 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 |
| DC 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 litres (2) 68 litres (3) 57 litres |
| Effective piston area Sd | 214 cm2 |
| Dynamically moved mass Mms | 25 grams |
| 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 |
Recommended Cabinet Sizes
| Volume / Principle | BR Port | fb |
| 30 litre / bass reflex | BR 25.50 | 40 Hz |
| 50 litre / bass reflex | BR 25.50 | 31 Hz |
| 70 litre / bass reflex | BR 25.50 | 27 Hz |
Driver Dimensions
Loudspeaker Driver Dimensions and Measurements - all dimensions in mm (approx.)
Frequency and Impedance Response
(1) one voice coil not connected = 4 Ohm
(2) both voice coils in series = 8 Ohm
(3) both voice coils in parallel = 2 Ohm
Loudspeaker Frequency and Impedance Response Graph
Directivity Pattern
Loudspeaker Directivity Pattern (on and off axis response)
Waterfall Spectrum
Loudspeaker Waterfall Spectrum Chart
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