18 cm (7”) Discovery Series Midwoofer.
NRSC-coated fiberglass cone: reduces resonances and distortion
Ferrite magnet with aluminum ring: improves linearity and low harmonic distortion
Ventilated die-cast aluminum chassis: rigidity and vibration suppression
Sensitivity: 88.5 dB, nominal impedance: 8 Ω
Fs: 50 Hz, Qts: 0.43, Vas: 19.5 L, Sd: 137 cm², Bl: 7.2 Tm, Re: 5.6 Ω
Low-damping SBR rubber suspension: smooth and controlled response
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The Scan-Speak 18W/8434G00 from the Discovery series combines traditional design with high-level sonic performance and robust construction. This 18 cm midwoofer is engineered to deliver clear mids and controlled bass, thanks to its fiberglass cone coated with NRSC technology, which reduces resonances and distortion.
Its ferrite magnet system with an aluminum shorting ring improves linearity and reduces harmonic distortion, while the die-cast aluminum basket, vented beneath the spider, ensures a rigid, resonance-free structure. With a sensitivity of 88.5 dB, this driver is perfectly suited for two-way Hi-Fi systems or as a mid-bass unit in more complex configurations, offering an ideal balance of musicality, efficiency, and durability.
Type & size: 18 cm (7") midwoofer
Nominal impedance: 8 Ω
Sensitivity: 88.5 dB (2.83 V/1 m)
Resonance frequency (Fs): 50 Hz
Cone: NRSC-coated fiberglass
Magnet system: Ferrite magnet with aluminum shorting ring
Suspension: Low-damping SBR rubber
Basket: Die-cast aluminum, vented under spider
Total Q factor (Qts): 0.43
Equivalent volume (Vas): 19.5 liters
Effective diaphragm area (Sd): 137 cm²
Motor strength (Bl): 7.2 Tm
DC resistance (Re): 5.6 Ω
