The Symmetric Drive (SD-1) concept with copper in the magnet system was invented by Scan-Speak.High quality magnet system design has thus been a key feature of Scan-Speak design since the companys inception. The Classic woofers are highly praised, and are used in some of the worlds most exceptional high-end Loudspeakers. Some feature Kevlar cones, others have the innovative Carbon fibre paper cone.
Key Features
- Patented Symmetrical Drive Motor Design
- Air Dried Paper/Carbon Fibre Cone
- 42mm Voice Coil w. Alu Foil
- Low-Loss linear suspension
- Low Damping SBR Rubber Surround
Specifications
power handling (continuous/programme) = 100 W
frequency range = 35-3000 Hz
resonance frequency fs = 35 Hz
impedance R = 4 Ohm
sound pressure level SPL = 90 dB (2,83V; 1m)
DC resistance Re = 3,4 Ohm
force factor BL = 6,6 N/A
voice coil inductance L = 0,31 mH
effective piston radiating area Sd = 145 cm2
effective mechanical mass incl. air load mms = 21,6 g
equivalent volume of compliance Vas = 28,2 l
total Q factor Qts = 0,33 (Qms=2,49, Qes=0,38)
voice coil diameter = 42 mm
maximum peak linear excursion vibration xlin = +/- 6,5 mm
