Hertz SPL Show SV 250.1

• Sensitivity (1W, 1m, infinite baffle) SPL1W 97.4dB
• Frequency response 90 - 7000Hz

Thiele & Small parameters

• Resonance frequency (free air) fS 90Hz
• Mechanical quality factor QMS 12.10
• Electrical quality factor QES 0.42
• Total quality factor QTS 0.40

Large signal parameters

• Maximum linear excursion xmax 3mm
• Air volume displaced at xmax VD 103cm³
• Power handling P 250W
• Program power Pmax 500W

Voice Coil

• Nominal impedance Z 4Ω
• DC resistance RE 3.3Ω
• Inductance (1kHz) LE 0.23mH
• VC Diameter 50mm

Magnet

• Force factor Bl 10.7N/A
• Motor constant Bl/√RE 5.89N/√W
• Diameter 155mm
• Height 20mm
• Material Ferrite

Diaphragm

• Effective diameter 209mm
• Effective area SD 343cm²
• Moving mass MMS 26.5g
• Moving mass (without air load) MMD 21.9g
• Material Ultra light pressed paper

Suspensions

• Stiffness KMS 8.33N/mm
• Compliance CMS 120µm/N
• Equivalent volume to the compliance VAS 20L
• Mechanical resistance RMS 1.24N·s/m

Dimensions

• Nominal diameter 10″
• 250mm
• Overall diameter 257mm
• Baffle cutout diameter 232mm
• Overall depth 108mm
• Flange thickness 7mm
• Mounting depth 101mm
• Volume occupied by the driver (estimated) 1.5L
• Net weight 4.0kg