DB Drive PTW12D4

2x4Ω

Subwoofer

Nominal diameter	12″ / 305 mm
Resonance	34.2 Hz
Q factor	0.51
Sensitivity	86.9 dB
Linear excursion	± 17.5 mm
Program Power	1750 W

Discontinued

DB Drive PTW12D4 Subwoofer

Specifications

Sensitivity (1W, 1m, infinite baffle) SPL1W 86.9dB

Thiele & Small parameters

Resonance frequency (free air) fS 34.2Hz
Mechanical quality factor QMS 6.66
Electrical quality factor QES 0.55
Total quality factor QTS 0.51

Large signal parameters

Maximum linear excursion (one way) xmax 17.5mm
Air volume displaced at xmax VD 929cm³
Power handling P 900W
Program power Pmax 1750W

Voice Coil

Nominal impedance Z 2 x 4Ω
DC resistance (in series) RE 6.4Ω
Inductance (1kHz, in series) LE 4.01mH

Magnet

Force factor (in series) Bl 21.3N/A
Motor constant Bl/√RE 8.42N/√W

Diaphragm

Effective diameter 260mm
Effective area SD 531cm²
Moving mass MMS 194g
Moving mass (without air load) MMD 185g

Suspensions

Stiffness KMS 8.33N/mm
Compliance CMS 120µm/N
Equivalent volume to the compliance VAS 45.4L
Mechanical resistance RMS 5.9N·s/m

Dimensions

Nominal diameter 12″
305mm
Volume occupied by the driver 3.7L

Export this driver to a simulation software:

Closed Box Simulator·

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