Dayton Audio DML25-4

• Sensitivity (1W, 1m, infinite baffle) SPL1W 79.1dB
• Frequency response 150 - 15000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 212Hz
• Mechanical quality factor QMS 3.83
• Electrical quality factor QES 1.50
• Total quality factor QTS 1.10

Large signal parameters

• Maximum linear excursion xmax 1.5mm
• Air volume displaced at xmax VD 2.4cm³
• Power handling P 20W
• Program power Pmax 40W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 4.3Ω
• Inductance (1kHz) LE 0.09mH
• VC Diameter 25mm

Magnet

• Force factor Bl 3.86N/A
• Motor constant Bl/√RE 1.86N/√W

Diaphragm

• Effective diameter 45mm
• Effective area SD 16.1cm²
• Moving mass MMS 3.7g
• Moving mass (without air load) MMD 3.7g

Suspensions

• Stiffness KMS 6.67N/mm
• Compliance CMS 150µm/N
• Equivalent volume to the compliance VAS 0.005L
• Mechanical resistance RMS 1.29N·s/m

Dimensions

• Nominal diameter 2″
• 51mm