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The 8¾” transducers SW223BD02 (4 ohm) and SW223BD03 (8 ohm) were designed specifically for high performance compact subwoofer applications where sound quality and low distortion are the priorities.
- Balanced Drive motor structure for optimal drive force symmetry resulting in largely reduced even order harmonic distortion
- Extremely large linear stroke, Xmax = ± 10.7 mm, ensuring low distortion at high output levels
- Very rigid black aluminium cone to ensure piston motion at high levels and for better heat transfer at high continuous power levels
- Rigid die cast alu chassis with extensive venting for lower air flow speed reducing audible distortion
- Heavy-duty black fiber glass voice coil former to reduce mechanical losses resulting in better dynamic performance and low-level details
- Large motor with 2” voice coil diameter for better control and power handling
- Built-in alu field-stabilizing ring for reduced distortion at high levels
- Low-loss suspension (high Qm) for better reproduction of details and dynamics
- Black plated cone and 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
Notes
Parameter
SW223BD02
SW223BD03
Unit
Before burn-in
After burn-in
Before burn-in
After burn-in
Nominal size
8¾
8¾
[inch.]
Nominal impedance
4
8
[ohm]
Recommended max. upper frequency limit
1,000
1,000
[Hz]
1, 3
Sensitivity, 2.83V/1m
83
81
[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
200
200
[W]
Effective radiating area, Sd
206
206
[sq.cm]
3, 6
Resonance frequency (free air, no baffle), Fs
24
25
[Hz]
Moving mass, incl. air (free air, no baffle), Mms
97
89
[g]
3
Force factor, Bxl
11.0
13.1
[N/A]
3, 6
Suspension compliance, Cms
0.47
0.47
[mm/N]
3, 6
Equivalent air volume, Vas
28
28
[lit.]
3, 6
Mechanical resistance, Rms
1.35
1.35
[Ns/m]
3, 6
Mechanical Q, Qms
10.7
10.2
[-]
3, 6
Electrical Q, Qes
0.42
0.48
[-]
3, 6
Total Q, Qts
0.40
0.46
[-]
4
Voice coil resistance, RDC
3.5
6.0
[ohm]
5
Voice coil inductance, Le(measured at 1 kHz)
0.80
1.16
[mH]
Voice coil inside diameter
51
51
[mm]
Voice coil winding height
29.4
29.4
[mm]
Air gap height
6
6
[mm]
Theoretical linear motor stroke, Xmax
±11.7
±11.7
[mm]
Magnet weight
[g]
Total unit net weight excl. packaging
4.4
4.4
[kg]
3, 5
Krm
84
88
[mohm]
3, 5
Erm
0.37
0.40
[-]
3, 5
Kxm
20
36
[mH]
3, 5
Exm
0.57
0.54
[-]
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Products from the same brand
- Car Audio
- Hifi Home
- Marine Audio
- Speakers Technical
- Pro Audio
- Sport & Free Time
- Best offer of the week