Beyma SM-112/N

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.9dB
• Frequency response 40 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 40Hz
• Mechanical quality factor QMS 8.00
• Electrical quality factor QES 0.31
• Total quality factor QTS 0.30

Large signal parameters

• Maximum linear excursion xmax 7.3mm
• Maximum excursion before damage xlim 15mm
• Air volume displaced at xmax VD 399cm³
• Power handling P 400W
• Program power Pmax 800W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.2Ω
• Inductance (1kHz) LE 1.2mH
• VC Diameter 77mm
• Winding height HVC 17.5mm

Magnet

• Force factor Bl 17N/A
• Motor constant Bl/√RE 6.83N/√W
• Air gap height HAG 7mm
• Material Ferrite

Diaphragm

• Effective diameter 265mm
• Effective area SD 550cm²
• Moving mass MMS 58g
• Moving mass (without air load) MMD 49.3g

Suspensions

• Stiffness KMS 3.66N/mm
• Compliance CMS 273µm/N
• Equivalent volume to the compliance VAS 117L
• Mechanical resistance RMS 1.8N·s/m

Dimensions

• Nominal diameter 12″
• 300mm
• Volume occupied by the driver (estimated) 2.5L
• Net weight 5.65kg