Beyma 8WRS250

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92.9dB
• Frequency response 70 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 68Hz
• Mechanical quality factor QMS 2.80
• Electrical quality factor QES 0.30
• Total quality factor QTS 0.27

Large signal parameters

• Maximum linear excursion xmax 6mm
• Maximum excursion before damage xlim 16mm
• Air volume displaced at xmax VD 132cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.9Ω
• Inductance (1kHz) LE 0.9mH
• VC Diameter 50.8mm
• Winding height HVC 15mm

Magnet

• Force factor Bl 15.5N/A
• Motor constant Bl/√RE 6.38N/√W
• Air gap height HAG 8mm
• Material Ferrite

Diaphragm

• Effective diameter 167mm
• Effective area SD 220cm²
• Moving mass MMS 28g
• Moving mass (without air load) MMD 25.7g

Suspensions

• Stiffness KMS 5.44N/mm
• Compliance CMS 184µm/N
• Equivalent volume to the compliance VAS 12.5L
• Mechanical resistance RMS 4.5N·s/m

Dimensions

• Nominal diameter 8″
• 200mm
• Overall depth 95mm
• Volume occupied by the driver (estimated) 0.86L
• Net weight 3.25kg