Beyma 8LW30

• Sensitivity (1W, 1m, infinite baffle) SPL1W 92.9dB
• Frequency response 65 - 6000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 70Hz
• Mechanical quality factor QMS 7.00
• Electrical quality factor QES 0.39
• Total quality factor QTS 0.37

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Maximum excursion before damage xlim 11.5mm
• Air volume displaced at xmax VD 99cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.8Ω
• Inductance (1kHz) LE 1.1mH
• VC Diameter 62.4mm
• Winding height HVC 16mm

Magnet

• Force factor Bl 12N/A
• Motor constant Bl/√RE 4.98N/√W
• Air gap height HAG 7mm
• Material Neodymium

Diaphragm

• Effective diameter 167mm
• Effective area SD 220cm²
• Moving mass MMS 22g
• Moving mass (without air load) MMD 19.7g

Suspensions

• Stiffness KMS 4.31N/mm
• Compliance CMS 232µm/N
• Equivalent volume to the compliance VAS 16L
• Mechanical resistance RMS 1.4N·s/m

Dimensions

• Nominal diameter 8″
• 200mm
• Volume occupied by the driver (estimated) 0.98L
• Net weight 2.35kg