Scanspeak 18W/4434G00 Discovery Range, 18cm 8 Ohm Bass / Midrange.
This 180mm / 7" bass-midrange unit features the patented woven glassfibre NRSC cone offering a very benign and smooth sound. The ferrite magnet assembly is aluminium ringed (sometimes called Faraday rings) to control rising impedance at higher frequency which in turn offers a wider useable bandwidth. This unit is a solid choice for 2 way DIY designs and also finds many applications as a high quality replacement drive unit.
Combining some advanced features, this is a great performer at this price point. Available in 4 and 8 ohms.
- Coated NRSC Fibre Glass Cone
- High efficiency ~91dB @ 2.83V
- Die cast Aluminium Chassis vented below spider
- Aluminium Ringed Magnet System
- Low Damping SBR Rubber Surround
This woofer is 4 Ohms ; the 8 Ohm version is here : 18W/8434G00
|Resonant frequency (fs)
||Nominal impedance (Zn)
|Mechanical Q factor (Qms)
||DC resistance (Re)
|Electrical Q factor (Qes)
||RMS power handling
|Total Q factor (Qts)
|Equivalent volume (Vas)
Here's the full datasheet: