DB Drive P2M 6PR

• Sensitivity (1W, 1m, infinite baffle) SPL1W 95dB
• Frequency response 155 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 151Hz
• Mechanical quality factor QMS 6.26
• Electrical quality factor QES 1.45
• Total quality factor QTS 1.18

Large signal parameters

• Power handling P 125W
• Program power Pmax 225W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.0Ω
• Inductance (1kHz) LE 2.3mH

Magnet

• Force factor Bl 4.2N/A
• Motor constant Bl/√RE 2.42N/√W

Diaphragm

• Effective diameter 131mm
• Effective area SD 135cm²
• Moving mass MMS 8.5g
• Moving mass (without air load) MMD 7.3g

Suspensions

• Stiffness KMS 9.09N/mm
• Compliance CMS 110µm/N
• Equivalent volume to the compliance VAS 2.9L
• Mechanical resistance RMS 1.4N·s/m

Dimensions

• Nominal diameter 6.5″
• 165mm
• Volume occupied by the driver (estimated) 0.5L