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ScanSpeak 18W, 8545K00 MidWoofer - Classic Range

ScanSpeak 18W, 8545K00 MidWoofer - Classic Range

7" 8 ohm MidWoofer. High output, 42mm voice coil with Fibreglass foil, extensively used in many OEM and DIY speakers, very even frequency response.

Air Dried Paper/Carbon Fibre cone, Scanspeak Symmetrical Motor Design, and a Low Damping SBR Rubber Surround.

Specification:

  • Resonance frequency [fs] 28 Hz
  • Mechanical Q factor [Qms] 5.20
  • Electrical Q factor [Qes] 0.30
  • Total Q factor [Qts] 0.28
  • Force factor [Bl] 8.2 Tm
  • Mechanical resistance [Rms] 0.69 kg/s
  • Moving mass [Mms] 20.5 g
  • Suspension compliance [Cms] 1.58 mm/N
  • Effective diaph. diameter [D] 136 mm
  • Effective piston area [Sd] 145 cm²
  • Equivalent volume [Vas] 46.4 l
  • Sensitivity (2.83V/1m) 87.5 dB
  • Ratio Bl/√Re 3.50 N/√W
  • Ratio fs/Qts 99 Hz

Electrical Data:

  • Nominal impedance [Zn] 8 Ω
  • Minimum impedance [Zmin] 6.6 Ω
  • Maximum impedance [Zo] 101 Ω
  • DC resistance [Re] 5.5 Ω
  • Voice coil inductance [Le] 0.4 mH

Power Handling:

  • 100h RMS noise test (IEC 17.1) 100 W
  • Long-term max power (IEC 17.3) - W

Voice Coil and Magnet Data:

  • Voice coil diameter 42 mm
  • Voice coil height 19 mm
  • Voice coil layers 2
  • Height of gap 6 mm
  • Linear excursion ± 6.5 mm
  • Max mech. excursion ± 10 mm
  • Unit weight 2.3 kg

Price: (1off)
£88.41 +vat +p&p

 

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