Ciare NDH15-4S

• Sensitivity (1W, 1m, infinite baffle) SPL1W 94.6dB

Thiele & Small parameters

• Resonance frequency (free air) fS 28Hz
• Mechanical quality factor QMS 11.19
• Electrical quality factor QES 0.26
• Total quality factor QTS 0.25

Large signal parameters

• Maximum linear excursion xmax 11.5mm
• Air volume displaced at xmax VD 1012cm³
• Power handling P 1000W
• Program power Pmax 2000W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.0Ω
• Inductance (1kHz) LE 1.07mH
• VC Diameter 100mm
• Winding height HVC 30mm

Magnet

• Force factor Bl 24.2N/A
• Motor constant Bl/√RE 9.84N/√W
• Air gap height HAG 14mm

Diaphragm

• Effective diameter 32mm
• Effective area SD 880cm²
• Moving mass MMS 143g
• Moving mass (without air load) MMD 125g
• Material Treated Cellulose

Suspensions

• Stiffness KMS 4.35N/mm
• Compliance CMS 230µm/N
• Equivalent volume to the compliance VAS 220L
• Mechanical resistance RMS 2.25N·s/m
• Surround material Doped fabric
• Spider material Nomex Fabric

Dimensions

• Nominal diameter 15″
• 380mm
• Overall diameter 388mm
• Baffle cutout diameter 354mm
• Overall depth 189mm
• Flange thickness 14mm
• Mounting depth 175mm
• Volume occupied by the driver (estimated) 4.4L
• Net weight 8.0kg
• Frame material Diecast Aluminium