ATOHM LD130CR04

• Sensitivity (1W, 1m, infinite baffle) SPL1W 83.4dB

Thiele & Small parameters

• Resonance frequency (free air) fS 47Hz
• Mechanical quality factor QMS 10.12
• Electrical quality factor QES 0.70
• Total quality factor QTS 0.66

Large signal parameters

• Maximum linear excursion xmax 4.5mm
• Maximum excursion before damage xlim 7mm
• Air volume displaced at xmax VD 39cm³
• Power handling P 60W
• Program power Pmax 150W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.5Ω
• Inductance (1kHz) LE 0.28mH
• VC Diameter 25mm
• Winding height HVC 15mm

Magnet

• Flux density B 0.95T
• Force factor Bl 4.3N/A
• Motor constant Bl/√RE 2.3N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 105mm
• Effective area SD 86.6cm²
• Moving mass MMS 12.6g
• Moving mass (without air load) MMD 12g

Suspensions

• Stiffness KMS 1.14N/mm
• Compliance CMS 880µm/N
• Equivalent volume to the compliance VAS 10.5L
• Mechanical resistance RMS 0.37N·s/m

Dimensions

• Nominal diameter 5″
• 130mm
• Volume occupied by the driver (estimated) 0.27L