Beyma 18WRS600

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94dB
• Frequency response 35 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 30Hz
• Mechanical quality factor QMS 13.80
• Electrical quality factor QES 0.48
• Total quality factor QTS 0.46

Large signal parameters

• Maximum linear excursion xmax 8.5mm
• Maximum excursion before damage xlim 53mm
• Air volume displaced at xmax VD 1067cm³
• Power handling P 600W
• Program power Pmax 1200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 1.3mH
• VC Diameter 76.2mm
• Winding height HVC 21.5mm

Magnet

• Force factor Bl 19N/A
• Motor constant Bl/√RE 8.33N/√W
• Air gap height HAG 9.5mm

Diaphragm

• Effective diameter 400mm
• Effective area SD 1255cm²
• Moving mass MMS 178g
• Moving mass (without air load) MMD 148g

Suspensions

• Stiffness KMS 6.29N/mm
• Compliance CMS 159µm/N
• Equivalent volume to the compliance VAS 354L
• Mechanical resistance RMS 2.4N·s/m

Dimensions

• Nominal diameter 18″
• 460mm
• Overall diameter 457mm
• Baffle cutout diameter 425mm
• Overall depth 218mm
• Volume occupied by the driver (estimated) 5.7L
• Net weight 8.7kg