SEAS H1878-08 L19RNX1

Woofer

Nominal diameter8″ / 190 mm
Resonance32 Hz
Q factor0.38
Sensitivity85.4 dB
Linear excursion± 7 mm
Program Power330 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
  • Sensitivity (1W, 1m, infinite baffle) SPL1W 85.4dB
  • Frequency response 20 - 3000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 32Hz
  • Mechanical quality factor QMS 5.50
  • Electrical quality factor QES 0.41
  • Total quality factor QTS 0.38

Large signal parameters

  • Maximum linear excursion xmax 7mm
  • Maximum excursion before damage xlim 11mm
  • Air volume displaced at xmax VD 102cm³
  • Power handling P 200W
  • Program power Pmax 330W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 6.2Ω
  • Inductance (1kHz) LE 0.66mH
  • VC Diameter 39mm
  • Winding height HVC 20mm

Magnet

  • Flux density B 1.3T
  • Force factor Bl 8.8N/A
  • Motor constant Bl/√RE 3.53N/√W
  • Air gap height HAG 6mm
  • Weight 0.9kg

Diaphragm

  • Effective diameter 136mm
  • Effective area SD 146cm²
  • Moving mass MMS 25.4g
  • Moving mass (without air load) MMD 24g

Suspensions

  • Stiffness KMS 1.04N/mm
  • Compliance CMS 960µm/N
  • Equivalent volume to the compliance VAS 29L
  • Mechanical resistance RMS 0.93N·s/m

Dimensions

  • Nominal diameter 8
  • 190mm
  • Volume occupied by the driver (estimated) 0.82L
  • Net weight 2.0kg
SEAS H1878-08 L19RNX1 SPL & Impedance
SEAS H1878-08 L19RNX1 Dimensions

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