Beyma 12P1000Nd

• Sensitivity (1W, 1m, infinite baffle)SPL1W94.1dB
• Frequency response50 - 2000Hz

Thiele & Small parameters

• Resonance frequency (free air)fS47Hz
• Mechanical quality factorQMS7.90
• Electrical quality factorQES0.27
• Total quality factorQTS0.26

Large signal parameters

• Maximum linear excursionxmax8mm
• Maximum excursion before damagexlim52mm
• Air volume displaced at xmaxVD440cm³
• Power handlingP900W
• Program powerPmax1800W

Voice Coil

• Nominal impedanceZ8Ω
• DC resistanceRE5.1Ω
• Inductance (1kHz)LE2mH
• VC Diameter101.6mm
• Winding heightHVC21mm

Magnet

• Force factorBl23.5N/A
• Motor constantBl/√RE10.4N/√W
• Air gap heightHAG12mm

Diaphragm

• Effective diameter265mm
• Effective areaSD550cm²
• Moving massMMS100g
• Moving mass (without air load)MMD91g

Suspensions

• StiffnessKMS8.7N/mm
• ComplianceCMS115µm/N
• Equivalent volume to the complianceVAS49L
• Mechanical resistanceRMS3.7N·s/m

Dimensions

• Nominal diameter12″
• 300mm
• Overall diameter312mm
• Baffle cutout diameter283mm
• Overall depth131mm
• Volume occupied by the driver (estimated)2.3L
• Net weight5.4kg