The SB Acoustics SB34NRXL75-8 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. Shorting Copper cap on pole piece. Non-inductive 75mm coil former.
Features:
Hard paper cone for improved piston operation (made in-house)
Large motor system with under-cut pole piece and dual shorting rings
Vented pole piece for minimum compression
Vented cast aluminium chassis for optimum strength and low compression
3″ copper voice coil for improved power handling
Long life silver lead wires
Low damping rubber surround for improved dynamic linearity
Non-conducting fibre glass voice coil former for minimum damping
Optimized for vented enclosure
Specifications
power handling (continuous/programme) = 200 W
resonance frequency fs = 22 Hz
impedance R = 8 Ohm
sound pressure level SPL = 91 dB (2,83V; 1m)
DC resistance Re = 6,2 Ohm
force factor BL = 16,6 N/A
voice coil inductance L = 1,2 mH
effective piston radiating area Sd = 508 cm2
effective mechanical mass incl. air load mms = 93 g
