SB ACOUSTICS | Mid-bass driver

SB Acoustics SB15MFC30-4 Bass-midwoofer

Name: SB Acoustics Acoustics mélysugárzó | HQ AudioParts
Brand: SB Acoustics
SKU: SB15MFC30-4
Price: 25990.00 HUF
Availability: LimitedAvailability

SKU: SB15MFC30-4

127 mm 4 Ω

Achieve tight, controlled bass and clear midrange response with this SB Acoustics polypropylene bass-midwoofer, designed for high-fidelity two-way or multi-way speaker systems. The 5-inch driver features a cast aluminium basket and delivers a total Q factor of 0.28 for optimal performance in sealed or ported enclosures.

25 990 Ft

(20 465 Ft + VAT)

Own warehouse Out of stock

Külső raktár 2. 2 pcs Aug 6.

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Technical data

Nominal diameter	127 mm
Impedance	4 Ω
Resonance frequency (Fs)	35.5 Hz
Sensitivity (SPL at 1 m / 2.83 V)	90 dB
Power tolerance (max)	50 W

Maximum linear deflection (Xmax)	5 mm
Total Q (Qts)	0.28
Electromagnetic Q (Qes)	0.3
Mechanical Q (Qms)	5.26
DC resistance (Re)	3.1 Ω
Voice coil inductance (L_e)	0.12 mH
BL product (BL)	4.8 T·m
The surface area of the cone (Sd)	82 cm²
Equivalent volume (Iron)	19.4 l
Mechanical compliance of the suspension (Cms)	2.03 mm/N
Drive mechanical losses (RMS)	0.42 kg/s
Woofer type	VMV D1se MQA Hi-End Audio DAC with Bluetooth 5.0 AptX
Voice coil diameter	30.5 mm
Weight of a magnet	54 g
Basket / frame material	Cast aluminum
Dimensions (mm)	15 mm
# Mounting holes	4
Diameter of the access opening	4.3 mm
Depth	79 mm

The SB Acoustics SB15MFC30-4 is a meticulously engineered 5-inch polypropylene bass-midwoofer that delivers tight, controlled bass and a clear, articulate midrange response. Designed for high-fidelity audio applications, this driver excels in two-way or multi-way speaker systems where precision and musicality are paramount. Its robust construction ensures reliable performance across a wide range of listening environments.

This versatile woofer is ideally suited for use in bookshelf speakers, compact floor-standing designs, or as a dedicated midbass driver in more complex multi-way configurations. Whether you are building a stereo pair for critical music listening or a home theatre system requiring dynamic impact, the SB15MFC30-4 offers the perfect balance of extension and clarity.

Technically, the driver features a 127mm nominal diameter with a 5mm maximum linear excursion (Xmax), enabling substantial air movement without distortion. The cast aluminium basket provides a rigid, non-resonant foundation, while the polypropylene cone ensures low coloration and consistent performance. With a sensitivity of 90dB (SPL 1m/2.83V) and a total Q factor (Qts) of 0.28, it is optimised for sealed or ported enclosures. The low voice coil inductance (Le: 0.12mH) and DC resistance (Re: 3.1 ohms) contribute to excellent transient response and amplifier control.

In summary, the SB15MFC30-4 is a high-quality bass-midwoofer that combines advanced engineering with practical performance, making it an outstanding choice for discerning audio enthusiasts.