Peerless HDS-P830874

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.6dB
• Frequency response 100 - 2500Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 61Hz
• Mechanical quality factor QMS 3.68
• Electrical quality factor QES 0.60
• Total quality factor QTS 0.51

Large signal parameters

• Maximum linear excursion xmax 7.3mm
• Air volume displaced at xmax VD 105cm³
• Power handling P 75W
• Program power Pmax 150W

Voice Coil

• Nominal impedance Z 8Ω
• DC resistance RE 6.3Ω
• Inductance (1kHz) LE 0.418mH
• VC Diameter 32.4mm

Magnet

• Force factor Bl 8.71N/A
• Motor constant Bl/√RE 3.47N/√W
• Air gap height HAG 6mm
• Material Ferrite

Diaphragm

• Effective diameter 135mm
• Effective area SD 143cm²
• Moving mass MMS 18.8g
• Moving mass (without air load) MMD 17.6g
• Material Polypropylene

Suspensions

• Stiffness KMS 2.7N/mm
• Compliance CMS 370µm/N
• Equivalent volume to the compliance VAS 10.6L
• Mechanical resistance RMS 1.96N·s/m

Dimensions

• Nominal diameter 6.5″
• 165mm
• Volume occupied by the driver (estimated) 0.64L
• Net weight 1.58kg
• Frame material Cast Aluminium