Peerless HDS-P830961

• Sensitivity (1W, 1m, infinite baffle) SPL1W 87.8dB
• Frequency response 20 - 20000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 39Hz
• Mechanical quality factor QMS 2.20
• Electrical quality factor QES 0.38
• Total quality factor QTS 0.32

Large signal parameters

• Maximum linear excursion xmax 5.1mm
• Air volume displaced at xmax VD 73cm³
• Power handling P 50W
• Program power Pmax 100W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.4Ω
• Inductance (1kHz) LE 0.19mH
• VC Diameter 32.4mm
• Former material Aluminium

Magnet

• Force factor Bl 6.33N/A
• Motor constant Bl/√RE 3.42N/√W
• Air gap height HAG 6mm

Diaphragm

• Effective diameter 135mm
• Effective area SD 143cm²
• Moving mass MMS 18g
• Moving mass (without air load) MMD 16.8g

Suspensions

• Stiffness KMS 1.08N/mm
• Compliance CMS 924µm/N
• Equivalent volume to the compliance VAS 26.6L
• Mechanical resistance RMS 2N·s/m

Dimensions

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