Pioneer TS-W311

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88dB
• Frequency response 20 - 125Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 45Hz
• Mechanical quality factor QMS 9.64
• Electrical quality factor QES 1.31
• Total quality factor QTS 1.17

Large signal parameters

• Maximum linear excursion xmax 11mm
• Air volume displaced at xmax VD 557cm³
• Power handling P 300W
• Program power Pmax 600W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.1Ω
• Inductance (1kHz) LE 1.29mH
• VC Diameter 48mm
• Winding height HVC 32mm
• Winding material Copper

Magnet

• Flux density B 0.843T
• Force factor Bl 9.6N/A
• Motor constant Bl/√RE 5.45N/√W
• Air gap height HAG 10mm
• Weight 1.24kg
• Material Ferrite

Diaphragm

• Effective diameter 254mm
• Effective area SD 506cm²
• Moving mass MMS 133g
• Moving mass (without air load) MMD 125g
• Material IMPP

Suspensions

• Stiffness KMS 10.6N/mm
• Compliance CMS 94µm/N
• Equivalent volume to the compliance VAS 34.1L
• Mechanical resistance RMS 3.89N·s/m
• Surround material Urethane

Dimensions

• Nominal diameter 12″
• 300mm
• Overall diameter 324mm
• Baffle cutout diameter 278mm
• Overall depth 165mm
• Flange thickness 17mm
• Mounting depth 148mm
• Volume occupied by the driver 1.75L
• Net weight 4.5kg