The SB Acoustics SB34SWPL76-4 12" woofer uses a large 3" voice coil on a cast aluminium chassis. Hard Paper proprietary cone materials made in-house for consistency. Low damping SBR rubber surround with high exertion and resilience. Open structure cast frame for reduced reflections and compression. Aluminium alloy for light weight, non-magnetic and extra rigidity.
Features:
Long stroke design
Linear high stability suspension
Low damping rubber surround
3’’ copper voice coil
Non-conducting reinforced fibre glass coil former
Very stiff hard paper cone (made in-house)
Vented cast aluminium chassis
Large vented motor system and vented coilformer
Long life silver lead wires
Specifications
power handling (continuous/programme) = 300 W
resonance frequency fs = 19 Hz
impedance R = 4 Ohm
sound pressure level SPL = 85 dB (2,83V; 1m)
DC resistance Re = 3,5 Ohm
force factor BL = 18,0 N/A
voice coil inductance L = 5,3 mH
effective piston radiating area Sd = 458 cm2
effective mechanical mass incl. air load mms = 266 g
