Eighteen Sound 12NMB420

Eighteen Sound 12NMB420
General Specifications Datasheet
Brand Eighteen Sound
Reference 12NMB420
Manufacturer website www.eighteensound.com
Size 12 in
300 mm
Type Low Frequency
Impedance Z 8 Ω
Minimum impedance Zmin 6.9 Ω
Nominal Power P 300 W
Program Power Pmax 450 W
Sensitivity SPL 100.5 dB
Usable frequency range 55 - 6000 Hz
Recommended crossover 2000 Hz
Eighteen Sound 12NMB420 Frequency response
Eighteen Sound 12NMB420 Impedance
Thiele/Small parameters Values in gray are calculated.
Resonant frequency Fs 53 Hz
Surface area of cone Sd 530 cm²
DC resistance Re 5.2 Ω
Mechanical Q Qms 3.60
Electromagnetic Q Qes 0.30
Total Q factor Qts 0.28
Mechanical suspension compliance Cms 264 µm/N
Compliance equivalent air volume Vas 105 liters
Moving mass Mmd 26.46 g
Moving mass (including airload) Mms 33.5 g
Mechanical resistance Rms 3.1 N·s/m
BL product BL 13.9 T·m
Voice coil inductance Le 0.2 mH
Maximum linear excursion (one way) Xmax 4 mm
Maximum mechanical limit (one way) Xlim 11 mm
Efficiency η₀ 5.01 %
Efficiency bandwidth product EBP 176
Effective diaphragm diameter Ø 25.98 cm
Import this driver in a simulation software:
WinISD 18Sound 12NMB420.wdr
Hornresp 18Sound 12NMB420.txt
Basta! 18Sound 12NMB420.bastaelement
Eighteen Sound 12NMB420 Dimensions
Dimensions
Overall diameter 315.0 mm
Baffle hole diameter 282.0 mm
Overall depth 127 mm
Flange thickness 11.5 mm
Net weight 2.8 kg
Materials of construction
Diaphragm material Paper
Diaphragm shape Curvilinear
Surround material Polycotton
Voice Coil Parameters
Voice coil diameter 65 mm
Coil material Aluminum
Similar drivers Power
(W)
SPL
(dB)
Fs
(Hz)
Sd
(cm²)
Qms
Qes
Vas
(L)
Xmax
(mm)
Eighteen Sound 12NMB420 300 101 53 530 3.60 0.30 105 4.0
Eighteen Sound 12NDA520 300 101 50 531 5.50 0.28 111 4.0
Celestion BN12-300S (4) 300 99 51 536 3.64 0.40 81 2.5
Celestion TN1230 300 97 55 530 3.11 0.30 60 3.8
B&C Speaker 12FW64 250 98 55 522 3.50 0.32 64 5.0
B&C Speaker 12CL64 250 98 52 522 4.30 0.32 64 4.5
LaVoce WSF122.02 200 98 50 531 3.80 0.45 90 4.3
Eighteen Sound 12MB700 450 102 49 531 4.70 0.20 101 4.5
Eighteen Sound 12MB600 450 101 44 531 3.90 0.19 115 4.5
LaVoce WSN122.50 250 98 50 531 4.30 0.39 70 4.7
Fane SOVEREIGN 12-300 300 98 46 530 5.20 0.38 110 4.5

LoudspeakerDatabase.com is not affiliated with Eighteen Sound. This page may contain errors or inaccuracies. Please check the up-to-date specifications on the manufacturer website before starting your project.

1208 ms