Eighteen Sound 8MB400

Eighteen Sound 8MB400
General Specifications Datasheet
Brand Eighteen Sound
Reference 8MB400
Manufacturer website www.eighteensound.com
Size 8 in
200 mm
Type Low Frequency
Impedance Z 8 Ω
Nominal Power P 280 W
Program Power Pmax 400 W
Sensitivity SPL 95 dB
Usable frequency range 55 - 5200 Hz
Recommended crossover 3000 Hz
Eighteen Sound 8MB400 Frequency response
Eighteen Sound 8MB400 Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 64 Hz
Surface area of cone Sd 227 cm²
DC resistance Re 5 Ω
Mechanical Q Qms 3.23
Electromagnetic Q Qes 0.43
Total Q factor Qts 0.38
Mechanical suspension compliance Cms 327 µm/N
Compliance equivalent air volume Vas 23.9 liters
Moving mass Mmd 16.03 g
Moving mass (including airload) Mms 18 g
Mechanical resistance Rms 2.24 N·s/m
BL product BL 9.3 T·m
Voice coil inductance Le 0.96 mH
Maximum linear excursion (one way) Xmax 5.8 mm
Maximum mechanical limit (one way) Xlim 9.5 mm
Efficiency η₀ 1.48 %
Efficiency bandwidth product EBP 148
Effective diaphragm diameter Ø 17 cm
Import this driver in a simulation software:
WinISD 18Sound 8MB400.wdr
Hornresp 18Sound 8MB400.txt
Basta! 18Sound 8MB400.bastaelement
Eighteen Sound 8MB400 Dimensions
Dimensions
Overall diameter 210.0 mm
Baffle hole diameter 184.0 mm
Overall depth 99.5 mm
Flange thickness 14.5 mm
Net weight 3.6 kg
Materials of construction
Diaphragm material Treated Paper
Diaphragm shape Curvilinear
Surround material Polycotton
Voice Coil Parameters
Voice coil diameter 51 mm
Coil material Aluminum
Similar drivers Power
(W)
SPL
(dB)
Fs
(Hz)
Sd
(cm²)
Qms
Qes
Vas
(L)
Xmax
(mm)
Eighteen Sound 8MB400 280 95 64 227 3.23 0.43 24 5.8
Eighteen Sound 8CX401F 280 95 56 227 3.23 0.38 24 5.8
B&C Speaker 8MBX51 16Ω 200 97 68 220 3.30 0.43 22 6.0
Eighteen Sound 8NW650 300 96 63 227 3.70 0.27 18 5.5
Eighteen Sound 8MB500 280 95 74 230 2.66 0.51 22 6.0
Eighteen Sound 8NMB420 280 95 61 220 4.00 0.31 33 5.8
Fane SOVEREIGN PRO 8-225 225 97 62 220 4.30 0.42 22 5.5
Beyma 8WR250 250 95 62 220 2.40 0.26 18 6.0
Fane SOVEREIGN 8-225 225 97 62 213 4.30 0.42 22 5.5
Beyma 8WRS250 250 95 68 220 2.80 0.30 13 6.0
B&C Speaker 8NDL51 8Ω 200 94 66 220 3.60 0.41 14 7.0

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