Beyma 21LEX1600Nd

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95.6dB
• Frequency response 30 - 1000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 30Hz
• Mechanical quality factor QMS 8.60
• Electrical quality factor QES 0.30
• Total quality factor QTS 0.29

Large signal parameters

• Maximum linear excursion xmax 14mm
• Maximum excursion before damage xlim 65mm
• Air volume displaced at xmax VD 2428cm³
• Power handling P 1600W
• Program power Pmax 3200W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.4Ω
• Inductance (1kHz) LE 4.7mH
• VC Diameter 101.6mm
• Winding height HVC 34.5mm

Magnet

• Force factor Bl 36.6N/A
• Motor constant Bl/√RE 15.8N/√W
• Air gap height HAG 14mm

Diaphragm

• Effective diameter 470mm
• Effective area SD 1734cm²
• Moving mass MMS 393g
• Moving mass (without air load) MMD 343g

Suspensions

• Stiffness KMS 13.9N/mm
• Compliance CMS 72µm/N
• Equivalent volume to the compliance VAS 305L
• Mechanical resistance RMS 8.6N·s/m

Dimensions

• Nominal diameter 21″
• 540mm
• Overall diameter 545mm
• Baffle cutout diameter 492mm
• Overall depth 268mm
• Volume occupied by the driver (estimated) 8.8L
• Net weight 11.8kg