MONACOR SPM-205/8

Mid-range

Nominal diameter8″ / 200 mm
Resonance37 Hz
Q factor0.70
Sensitivity86.4 dB
Linear excursion± 3 mm
Program Power150 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 86.4dB
  • Frequency response 37 - 5000Hz

Thiele & Small parameters

  • Resonance frequency (free air) fS 37Hz
  • Mechanical quality factor QMS 2.95
  • Electrical quality factor QES 0.92
  • Total quality factor QTS 0.70

Large signal parameters

  • Maximum linear excursion xmax 3mm
  • Air volume displaced at xmax VD 63cm³
  • Power handling P 70W
  • Program power Pmax 150W

Voice Coil

  • Nominal impedance Z 8Ω
  • DC resistance RE 7.2Ω
  • Inductance (1kHz) LE 0.7mH
  • VC Diameter 25.5mm
  • Winding material Aluminium

Magnet

  • Force factor Bl 6.5N/A
  • Motor constant Bl/√RE 2.42N/√W
  • Diameter 80mm
  • Weight 0.38kg

Diaphragm

  • Effective diameter 164mm
  • Effective area SD 210cm²
  • Moving mass MMS 22g
  • Moving mass (without air load) MMD 19.8g

Suspensions

  • Stiffness KMS 1.33N/mm
  • Compliance CMS 750µm/N
  • Equivalent volume to the compliance VAS 54L
  • Mechanical resistance RMS 1.73N·s/m

Dimensions

  • Nominal diameter 8
  • 200mm
  • Overall diameter 200mm
  • Baffle cutout diameter 183mm
  • Overall depth 88mm
  • Flange thickness 8mm
  • Mounting depth 80mm
  • Volume occupied by the driver (estimated) 0.57L
  • Net weight 1.4kg
MONACOR SPM-205/8 SPL & Impedance
MONACOR SPM-205/8 Dimensions

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