Peerless HDS-P830911

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.3dB
• Frequency response 85 - 4000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 72Hz
• Mechanical quality factor QMS 1.84
• Electrical quality factor QES 0.59
• Total quality factor QTS 0.45

Large signal parameters

• Maximum linear excursion xmax 5.5mm
• Air volume displaced at xmax VD 49cm³
• Power handling P 30W
• Program power Pmax 60W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 5.9Ω
• Inductance (1kHz) LE 0.123mH
• VC Diameter 25.7mm

Magnet

• Force factor Bl 6.82N/A
• Motor constant Bl/√RE 2.81N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 107mm
• Effective area SD 89.9cm²
• Moving mass MMS 10.2g
• Moving mass (without air load) MMD 9.6g
• Material Paper

Suspensions

• Stiffness KMS 2.13N/mm
• Compliance CMS 470µm/N
• Equivalent volume to the compliance VAS 5.42L
• Mechanical resistance RMS 2.51N·s/m

Dimensions

• Nominal diameter 5″
• 133mm
• Volume occupied by the driver (estimated) 0.44L
• Net weight 1.1kg
• Frame material Cast Aluminium