Peerless HDS-P830992

• Sensitivity (1W, 1m, infinite baffle) SPL1W 85.6dB
• Frequency response 60 - 15000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 120Hz
• Mechanical quality factor QMS 2.17
• Electrical quality factor QES 0.94
• Total quality factor QTS 0.66

Large signal parameters

• Maximum linear excursion xmax 5mm
• Air volume displaced at xmax VD 28cm³
• Power handling P 30W
• Program power Pmax 60W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.2Ω
• Inductance (1kHz) LE 0.23mH
• VC Diameter 25.7mm

Magnet

• Force factor Bl 4.85N/A
• Motor constant Bl/√RE 2.13N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 84mm
• Effective area SD 55.4cm²
• Moving mass MMS 5.72g
• Moving mass (without air load) MMD 5.4g
• Material Glass Fibre

Suspensions

• Stiffness KMS 3.13N/mm
• Compliance CMS 320µm/N
• Equivalent volume to the compliance VAS 1.39L
• Mechanical resistance RMS 1.99N·s/m

Dimensions

• Nominal diameter 4″
• 102mm
• Volume occupied by the driver (estimated) 0.36L
• Net weight 0.906kg
• Frame material Cast Aluminium