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4½” High Performance Steel Frame Subwoofer Units.
Suitable for dedicated subwoofer applications and as low frequency transducers in 2½-, 3- and multi-way speaker systems.
- Balanced Drive motor structure for optimal drive force symmetry resulting in largely reduced even order harmonic distortion
- Large linear stroke, ensuring low distortion at high output levels
- Rigid paper cones to ensure piston motion even at high levels - for reduced distortion
- Rigid steel chassis’ with extensive venting for lower air flow speed reducing audible distortion
- Heavy-duty fiber glass voice coil former to reduce mechanical losses resulting in better dynamic performance and low-level details
- Large motor structures for better control and power handling
- Built-in alu field-stabilizing rings for reduced distortion at high levels
- Low-loss suspension (high Qm) for better reproduction of details and dynamics
- Black plated motor parts for better heat transfer to the surrounding air
- Conex spider for better durability under extreme conditions
- Gold plated terminals to ensure long-term trouble free connection
- Delivered with foam gasket attached for hassle-free mounting and secure cabinet sealing
Notes
Parameter
SW118WA01
SW118WA02
Unit
Before burn-in
After burn-in
Before burn-in
After burn-in
Nominal size
4½
4½
[inch.]
Nominal impedance
4
8
[ohm]
Recommended max. upper frequency limit
1,200
1,200
[Hz]
1, 3
Sensitivity, 2.83V/1m (calculated from T/S parameters)
86
83.5
[dB]
2
Power handling, short term, IEC 268-5, no additional filtering
[W]
2
Power handling, long term, IEC 268-5, no additional filtering
[W]
2
Power handling, continuous, IEC 268-5, no additional filtering
40
40
[W]
Effective radiating area, Sd
49
49
[sq.cm]
3, 6
Resonance frequency (free air, no baffle), Fs
58
60
[Hz]
Moving mass, incl. air (free air, no baffle), Mms
7.9
7.3
[g]
3
Force factor, Bxl
4.7
5.9
[N/A]
3, 6
Suspension compliance, Cms
0.97
0.97
[mm/N]
3, 6
Equivalent air volume, Vas
3.3
3.3
[lit.]
3, 6
Mechanical resistance, Rms
0.34
0.34
[Ns/m]
3, 6
Mechanical Q, Qms
8.4
8.1
[-]
3, 6
Electrical Q, Qes
0.41
0.50
[-]
3, 6
Total Q, Qts
0.39
0.47
[-]
4
Voice coil resistance, RDC
3.2
6.3
[ohm]
5
Voice coil inductance, Le(measured at 1 kHz)
0.48
0.78
[mH]
Voice coil inside diameter
26
26
[mm]
Voice coil winding height
12
12
[mm]
Air gap height
4
4
[mm]
Theoretical linear motor stroke, Xmax
±4
±4
[mm]
Magnet weight
[g]
Total unit net weight excl. packaging
0.80
0.80
[kg]
3, 5
Krm
0.17
0.27
[mohm]
3, 5
Erm
0.97
0.96
[-]
3, 5
Kxm
7.0
10.7
[mH]
3, 5
Exm
0.66
0.65
[-]
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Products from the same category
- Car Audio
- Hifi Home
- Marine Audio
- Speakers Technical
- Pro Audio
- Sport & Free Time
- Best offer of the week
Products from the same brand
- Car Audio
- Hifi Home
- Marine Audio
- Speakers Technical
- Pro Audio
- Sport & Free Time
- Best offer of the week