SB Acoustics SB12NRX25-8 4'' Midrange Woofer

SB ACOUSTICS | Mid-bass driver

SB Acoustics SB12NRX25-8 4'' Midrange Woofer

Name: SB Acoustics Acoustics mélysugárzó 4' | HQ AudioParts
Brand: SB Acoustics
SKU: SB12NRX25-8
Price: 23090.00 HUF
Availability: LimitedAvailability

SKU: SB12NRX25-8

101.6 mm 8 Ω

Achieve accurate midrange reproduction in compact designs with this 4-inch driver from the SB Acoustics NRX Norex series. Its low-distortion motor system and lightweight cone ensure clear vocals and instrumentals. The total Q factor (Qts) is 0.37, suitable for sealed or ported enclosures.

23 090 Ft

(18 181 Ft + VAT)

Own warehouse Out of stock

Külső raktár 2. 7 pcs Aug 6.

Favorite

Fast Delivery 2-5 working days

Secure Payment Barion & SSL protection

14 Days Exchange We take it back without question

Technical data

Nominal diameter	101.6 mm
Impedance	8 Ω
Resonance frequency (Fs)	57 Hz
Sensitivity (SPL at 1 m / 2.83 V)	85.5 dB
Maximum linear deflection (Xmax)	5 mm

Total Q (Qts)	0.37
Electromagnetic Q (Qes)	0.41
Mechanical Q (Qms)	4.1
DC resistance (Re)	6.4 Ω
Voice coil inductance (L_e)	0.34 mH
BL product (BL)	5.4 T·m
The surface area of the cone (Sd)	50 cm²
Equivalent volume (Iron)	5.097 l
Mechanical compliance of the suspension (Cms)	1.49 mm/N
Woofer type	DL200 Audio DAC
Voice coil diameter	25.4 mm
Subwoofer Series	SB Acoustics NRX Norex Series

The SB12NRX25-8 from SB Acoustics is a 4-inch midrange woofer that delivers exceptional clarity and precision in compact loudspeaker designs. As part of the acclaimed NRX Norex series, this driver is engineered to reproduce vocals and instruments with remarkable accuracy, making it an ideal choice for high-fidelity audio systems, studio monitors, and custom two-way or three-way speaker builds. Its modest footprint allows integration into bookshelf enclosures or slim floorstanding cabinets without compromising performance.

Technically, the SB12NRX25-8 features a low-distortion motor system and a lightweight Norex cone, which together minimise colouration and ensure clean, articulate midrange response. With a total Q factor (Qts) of 0.37 and a resonance frequency (Fs) of 57 Hz, it is well-suited for sealed or small vented enclosures. The 25.4 mm voice coil and 5 mm linear excursion (Xmax) provide robust power handling, while the 8-ohm impedance and 85.5 dB sensitivity offer efficient integration with typical amplifier loads. Low voice coil inductance (Le) of 0.34 mH further enhances high-frequency extension and transient response.

This driver is a superb choice for audiophiles and DIY enthusiasts seeking natural, detailed midrange reproduction in space-conscious designs. Its engineering excellence from SB Acoustics ensures reliable, long-lasting performance.