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ScanSpeak 18W, 8542-00 MidWoofer - Classic Range

ScanSpeak 18W, 8542-00 MidWoofer - Classic Range

Replacement for ProAc Studio 100.

7" 8 ohm MidWoofer, High output, 42mm voice coil, highly regarded and used in many OEM and DIY speakers.

Air dried Paper/Carbon Fibre cone, Scanspeak Symmetrical Motor Design, and a low damping Coated Foam surround.

Specification:

  • Resonance frequency [fs] 30 Hz
  • Mechanical Q factor [Qms] 1.70
  • Electrical Q factor [Qes] 0.26
  • Total Q factor [Qts] 0.23
  • Force factor [Bl] 7.8 Tm
  • Mechanical resistance [Rms] 1.66 kg/s
  • Moving mass [Mms] 15 g
  • Suspension compliance [Cms] 1.88 mm/N
  • Effective diaph. diameter [D] 131 mm
  • Effective piston area [Sd] 135 cm²
  • Equivalent volume [Vas] 47.9 l
  • Sensitivity (2.83V/1m) 89 dB
  • Ratio Bl/√Re 3.33 N/√W
  • Ratio fs/Qts 133 Hz

Electrical Data:

  • Nominal impedance [Zn] 8 Ω
  • Minimum impedance [Zmin] 6.6 Ω
  • Maximum impedance [Zo] 41.5 Ω
  • DC resistance [Re] 5.5 Ω
  • Voice coil inductance [Le] 0.2 mH

Power Handling:

  • 100h RMS noise test (IEC 17.1) 70 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 2.1 kg

Price: (1off)
£110.21+vat +p&p

 

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