Pioneer TS-W254R

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88dB
• Frequency response 20 - 220Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 33.5Hz
• Mechanical quality factor QMS 12.80
• Electrical quality factor QES 0.65
• Total quality factor QTS 0.62

Large signal parameters

• Maximum linear excursion xmax 4.7mm
• Air volume displaced at xmax VD 230cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.0Ω
• Inductance (1kHz) LE 2.1mH

Magnet

• Force factor Bl 10.4N/A
• Motor constant Bl/√RE 5.98N/√W
• Weight 0.94kg

Diaphragm

• Effective diameter 250mm
• Effective area SD 490cm²
• Moving mass MMS 115g
• Moving mass (without air load) MMD 108g
• Material IMPP

Suspensions

• Stiffness KMS 5N/mm
• Compliance CMS 200µm/N
• Equivalent volume to the compliance VAS 68L
• Mechanical resistance RMS 1.89N·s/m

Dimensions

• Nominal diameter 10″
• 250mm
• Baffle cutout diameter 235mm
• Mounting depth 127mm
• Volume occupied by the driver 1.33L