SB Acoustics SB12NRX25-8 4" Woofer Proprietary cone material with natural fibres made... more
Product information "SB Acoustics SB12NRX25-8"
SB Acoustics SB12NRX25-8 4" Woofer
- Proprietary cone material with natural fibres made in-house
- High damping Butyl rubber surround for non-resonant sound character
- Vented pole piece for reduced compression
- Vented cast aluminium chassis for optimum strength and low compression
- CCAW voice coil for reduced moving mass
- Long life silver lead wires
- Non-conducting fibre glass coil former for minimum damping
Specifications
- power handling (continuous/programme) = 30 W
- frequency range = 80-12000 Hz
- resonance frequency fs = 57 Hz
- impedance R = 8 Ohm
- sound pressure level SPL = 85.5 dB (2,83V; 1m)
- DC resistance Re = 6,4 Ohm
- force factor BL = 5,4 N/A
- voice coil inductance L = 0,34 mH
- effective piston radiating area Sd = 50 cm2
- effective mechanical mass incl. air load mms = 5,2 g
- equivalent volume of compliance Vas = 5,3 l
- total Q factor Qts = 0,37 (Qms=4,1, Qes=0,41)
- voice coil diameter = 25,4 mm
- mounting diameter d = 95 mm
- overall diameter d = 123 mm
- mounting depth (not countersunk) t = 60,61 mm
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