Beyma 6B30/P

• Sensitivity (1W, 1m, infinite baffle) SPL1W 88.4dB
• Frequency response 55 - 8000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 56Hz
• Mechanical quality factor QMS 3.00
• Electrical quality factor QES 0.60
• Total quality factor QTS 0.50

Large signal parameters

• Maximum linear excursion xmax 5.5mm
• Maximum excursion before damage xlim 15mm
• Air volume displaced at xmax VD 77cm³
• Power handling P 50W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.5Ω
• Inductance (1kHz) LE 0.3mH
• VC Diameter 25.4mm
• Winding height HVC 14mm

Magnet

• Force factor Bl 6.8N/A
• Motor constant Bl/√RE 2.9N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 134mm
• Effective area SD 140cm²
• Moving mass MMS 14g
• Moving mass (without air load) MMD 12.8g

Suspensions

• Stiffness KMS 1.77N/mm
• Compliance CMS 564µm/N
• Equivalent volume to the compliance VAS 15.6L
• Mechanical resistance RMS 1.7N·s/m

Dimensions

• Nominal diameter 6.5″
• 165mm
• Overall diameter 167mm
• Baffle cutout diameter 141mm
• Overall depth 76mm
• Volume occupied by the driver (estimated) 0.42L
• Net weight 1.2kg