ScanSpeak 18W, 8531G00 MidWoofer - Revelator Range

Revelator mid-woofers are famous for their Scanspeak Sliced Paper Cones; the slices are filled with damping glue. The effect is to reduce break-up nodes in the 7" cone and give a midrange clarity and overall smooth frequency response, which has made this top audiophile range uniquely successful.

Symmetrical Drive SD-1 Motor, Die-Cast Aluminum Chassis vented below the spider.

Low Loss linear suspension, large ferrite magnet system and high output.

Specification:

• Resonance frequency [fs] 28 Hz
• Mechanical Q factor [Qms] 5.10
• Electrical Q factor [Qes] 0.39
• Total Q factor [Qts] 0.36
• Force factor [Bl] 6.8 Tm
• Mechanical resistance [Rms] 0.60 kg/s
• Moving mass [Mms] 17.5 g
• Suspension compliance [Cms] 1.85 mm/N
• Effective diaph. diameter [D] 138 mm
• Effective piston area [Sd] 150 cm²
• Equivalent volume [Vas] 58.2 l
• Sensitivity (2.83V/1m) 87 dB
• Ratio Bl/√Re 2.82 N/√W
• Ratio fs/Qts 77 Hz

Electrical Data:

• Nominal impedance [Zn] 8 Ω
• Minimum impedance [Zmin] 6.4 Ω
• Maximum impedance [Zo] 81.6 Ω
• DC resistance [Re] 5.8 Ω
• Voice coil inductance [Le] 0.35 mH

Power Handling:

• 100h RMS noise test (IEC 17.1) 60 W
• Long-term max power (IEC 17.3) - W

Voice Coil and Magnet Data:

• Voice coil diameter 38 mm
• Voice coil height 18 mm
• Voice coil layers 2
• Height of gap 5 mm
• Linear excursion ± 6.5 mm
• Max mech. excursion ± 11 mm
• Unit weight 1.7 kg

PRICE (1 off)
£162.55 +vat +p&p