Hertz DCX 165.3

2 Way

Nominal diameter6.5″ / 165 mm
Resonance68 Hz
Q factor0.85
Sensitivity88.8 dB
Linear excursion± 2 mm
Program power120 W
Driver
Port
Combined
Frequency response
Hz
Impedance
Ω
Impedance Phase
°
Excursion
mm
Velocity
m/s
SPL
dB
Acoustical Phase
°
Group Delay
ms
Transient response
ms
Discard
Apply

Specifications

  • Sensitivity (1W, 1m, infinite baffle) SPL1W 88.8dB
  • Frequency response 60 - 21000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 68Hz
  • Mechanical quality factor QMS 7.54
  • Electrical quality factor QES 0.96
  • Total quality factor QTS 0.85

Large signal parameters

  • Maximum linear excursion (one way) xmax 2mm
  • Air volume displaced at xmax VD 29cm³
  • Power handling P 60W
  • Program power Pmax 120W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.3Ω
  • Inductance (1kHz, estimated) LE 0.36mH
  • VC Diameter 25mm

Magnet

  • Force factor Bl 4N/A
  • Motor constant Bl/√RE 2.2N/√W
  • Material High density flux ferrite

Diaphragm

  • Effective diameter 135mm
  • Effective area SD 143cm²
  • Moving mass (including air load) MMS 11g
  • Moving mass MMD 9.8g
  • Material Water-repellent pressed paper

Suspensions

  • Stiffness KMS 2.04N/mm
  • Compliance CMS 490µm/N
  • Equivalent volume to the compliance VAS 14.3L
  • Mechanical resistance RMS 0.62N·s/m

Dimensions

  • Nominal diameter 6.5
  • 165mm
  • Volume occupied by the driver (estimated) 0.5L

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