DB Drive PTW10D2

• Sensitivity (1W, 1m, infinite baffle) SPL1W 84.5dB

Thiele & Small parameters

• Resonance frequency (free air) fS 36.9Hz
• Mechanical quality factor QMS 6.39
• Electrical quality factor QES 0.48
• Total quality factor QTS 0.44

Large signal parameters

• Maximum linear excursion xmax 17.5mm
• Air volume displaced at xmax VD 604cm³
• Power handling P 900W
• Program power Pmax 1750W

Voice Coil

• Nominal impedance Z 2 x 2Ω
• DC resistance (in series) RE 4.0Ω
• Inductance (1kHz, in series) LE 2.63mH

Magnet

• Force factor (in series) Bl 19.6N/A
• Motor constant Bl/√RE 9.8N/√W

Diaphragm

• Effective diameter 210mm
• Effective area SD 345cm²
• Moving mass MMS 196g
• Moving mass (without air load) MMD 191g

Suspensions

• Stiffness KMS 11.1N/mm
• Compliance CMS 90µm/N
• Equivalent volume to the compliance VAS 14.5L
• Mechanical resistance RMS 7.1N·s/m

Dimensions

• Nominal diameter 10″
• 254mm
• Volume occupied by the driver 2.8L