Beyma 18LEX1000Fe

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95dB
• Frequency response 35 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 34Hz
• Mechanical quality factor QMS 7.30
• Electrical quality factor QES 0.39
• Total quality factor QTS 0.37

Large signal parameters

• Maximum linear excursion xmax 11mm
• Maximum excursion before damage xlim 51mm
• Air volume displaced at xmax VD 1381cm³
• Power handling P 1000W
• Program power Pmax 2000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 1.9mH
• VC Diameter 88.9mm
• Winding height HVC 27mm

Magnet

• Force factor Bl 23.8N/A
• Motor constant Bl/√RE 10.2N/√W
• Air gap height HAG 12mm

Diaphragm

• Effective diameter 400mm
• Effective area SD 1255cm²
• Moving mass MMS 196g
• Moving mass (without air load) MMD 166g

Suspensions

• Stiffness KMS 9.01N/mm
• Compliance CMS 111µm/N
• Equivalent volume to the compliance VAS 250L
• Mechanical resistance RMS 5.7N·s/m

Dimensions

• Nominal diameter 18″
• 460mm
• Overall diameter 462mm
• Baffle cutout diameter 426mm
• Overall depth 224mm
• Volume occupied by the driver (estimated) 7L
• Net weight 11.7kg