Merry Christmas & a Happy New Year ! We reopen on the 6th January 2025.
Merry Christmas & a Happy New Year ! We reopen on the 6th January 2025.
DRIVE UNITS BY MANUFACTURER:
SB12NRXF25-4
UK STOCK ITEM
The SB Acoustics SB12NRXF25-4 is a 4 inch 4 ohm midwoofer featuring a Norex cone with a foam surround and a rigid aluminium chassis. Norex is a proprietary paper based material comprised of wood pulp and selected natural fibres blended for an optimally strong but lightweight cone that, combined with the foam surround, gives excellent midrange extension with resolution and detail. This unit can be used as a fine midrange drive unit.
Also available in 8 ohms: SB12NRXF25-8.
Resonant frequency (fs) | 61 Hz | Nominal impedance (Zn) | 4 Ω |
Mechanical Q factor (Qms) | 5.3 |
DC resistance (Re) | 3.1 Ω |
Electrical Q factor (Qes) | 0.53 |
Max power handling | 30 W |
Total Q factor (Qts) | 0.48 |
Sensitivity (2.83V/1m) |
87dB |
Equivalent volume (Vas) | 4.1L | Chassis diameter |
123mm |
Friendly technical support
40+ years in the trade
UK family run business
Excellent customer service
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