L22RN4X/P H1208

L22RN4X/P H1208
L22RN4X/P
H1208
Extremely stiff aluminum cone gives tremendous bass precision. The cone and the
low loss rubber surround show no sign of the familiar cone edge resonance and
distortion associated with soft cones.
4-layer, extremely long, high temperature voice coil wound on an aluminium voice
coil former gives a high power handling
capacity.
Phase plug reduces compression due to temperature
variations in the voice coil, eliminates resonances that would occur in the volume
between the dust cap and the pole piece and increases the power handling capacity.
Large magnet system provides reasonably high efficiency and low Q.
Extremely stiff and stable injection moulded metal basket keeps the critical components in perfect alignment. Large windows in the basket both above and below the
spider reduce sound reflection, air flow noise and cavity resonance to a minimum.
100
50
95
90
40
85
SPL [dB]
30
75
70
20
65
60
Impedance [ohm]
80
10
55
50
10
0
100
1 000
10 000
Frequency [Hz]
The frequency responses above show measured free field sound pressure in 0, 30, and 60 degrees angle using a 21L closed box. Input
2.83 VRMS, microphone distance 0.5m, normalized to SPL 1m.The dotted line is a calculated response in infinite baffle
based on the parameters given for this specific driver. The impedance is measured in free air without baffle using a 2V
sine signal.
Nominal Impedance
8 Ohms
Voice Coil Resistance
6.1 Ohms
Recommended Frequency Range
20 - 1000 Hz
Voice Coil Inductance
3.76 mH
Short Term Power Handling *
300 W
Force Factor
10.7 N/A
Long Term Power Handling *
125 W
Free Air Resonance
21 Hz
Characteristic Sensitivity (2,83V, 1m) 86.5 dB
Moving Mass
40.0 g
Voice Coil Diameter
39 mm
Air Load Mass In IEC Baffle
1.89 g
Voice Coil Height
20 mm
Suspension Compliance
1.4 mm/N
Air Gap Height
6 mm
Suspension Mechanical Resistance
1.76 Ns/m
Linear Coil Travel (p-p)
14 mm
Effective Piston Area
220 cm2
Maximum Coil Travel (p-p)
21 mm
VAS
93 Litres
Magnetic Gap Flux Density
0.9 T
QMS
3.13
Magnet Weight
0.64 kg
QES
0.29
Total Weight
2.20 kg
QTS
0.27
Jul 2007-1
RoHS compliant product
*IEC 268-5
SEAS reserves the right to change technical data
W22-411
www.seas.no
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