Morel PRIMO 804

Subwoofer

Nominal diameter8″ / 223 mm
Resonance45 Hz
Q factor0.60
Sensitivity85.2 dB
Linear excursion± 8 mm
Program Power500 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 85.2dB
  • Frequency response 28 - 900Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 45Hz
  • Mechanical quality factor QMS 4.44
  • Electrical quality factor QES 0.68
  • Total quality factor QTS 0.60

Large signal parameters

  • Maximum linear excursion (one way) xmax 8mm
  • Air volume displaced at xmax VD 175cm³
  • Power handling P 250W
  • Program power Pmax 500W

Voice Coil

  • Nominal impedance Z 4Ω
  • DC resistance RE 3.2Ω
  • Inductance (1kHz) LE 1.14mH
  • VC Diameter 51mm
  • Winding height HVC 24mm
  • Winding material Copper
  • Former material Aluminum

Magnet

  • Flux density B 0.66T
  • Force factor Bl 9.07N/A
  • Motor constant Bl/√RE 5.07N/√W
  • Air gap height HAG 8mm
  • Material High grade ferrite

Diaphragm

  • Effective diameter 167mm
  • Effective area SD 219cm²
  • Moving mass MMS 59g
  • Moving mass (without air load) MMD 56.5g
  • Material Laminated paper

Suspensions

  • Stiffness KMS 5.26N/mm
  • Compliance CMS 190µm/N
  • Equivalent volume to the compliance VAS 12.6L
  • Mechanical resistance RMS 3.96N·s/m

Dimensions

  • Nominal diameter 8
  • 223mm
  • Overall diameter 223mm
  • Baffle cutout diameter 194mm
  • Mounting depth 115mm
  • Volume occupied by the driver 2L
  • Net weight 3.86kg

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