Eighteen Sound 15W750

4Ω

Subwoofer

Nominal diameter	15″ / 380 mm
Resonance	39 Hz
Q factor	0.29
Sensitivity	96.6 dB
Linear excursion	± 8 mm
Program Power	1200 W

Eighteen Sound 15W750 Subwoofer

Specifications

Sensitivity (1W, 1m, infinite baffle) SPL1W 96.6dB
Frequency response 40 - 4300Hz

Thiele & Small parameters

Resonance frequency (free air) fS 39Hz
Mechanical quality factor QMS 6.20
Electrical quality factor QES 0.30
Total quality factor QTS 0.29

Large signal parameters

Maximum linear excursion xmax 8mm
Air volume displaced at xmax VD 680cm³
Power handling P 600W
Program power Pmax 1200W

Voice Coil

Nominal impedance Z 4Ω
DC resistance RE 2.7Ω
Inductance (1kHz) LE 0.73mH
VC Diameter 75mm
Winding material Aluminum

Magnet

Force factor Bl 14N/A
Motor constant Bl/√RE 8.52N/√W
Material Ferrite

Diaphragm

Effective diameter 329mm
Effective area SD 850cm²
Moving mass MMS 89.5g
Moving mass (without air load) MMD 72g

Suspensions

Stiffness KMS 5.38N/mm
Compliance CMS 186µm/N
Equivalent volume to the compliance VAS 253L
Mechanical resistance RMS 3.54N·s/m

Dimensions

Nominal diameter 15″
380mm
Overall diameter 393mm
Baffle cutout diameter 354mm
Overall depth 184mm
Flange thickness 13mm
Mounting depth 171mm
Volume occupied by the driver (estimated) 4.3L
Net weight 7.9kg

Eighteen Sound 15W750 SPL

Eighteen Sound 15W750 Dimensions

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