SB ACOUSTICS | Broadband subwoofer

SB Acoustics SB15CRC30-8 Bass-midwoofer

Name: SB Acoustics Acoustics mélysugárzó | HQ AudioParts
Brand: SB Acoustics
SKU: SB15CRC30-8
Price: 42990.00 HUF
Availability: LimitedAvailability

SKU: SB15CRC30-8

127 mm 8 Ω

Achieve accurate, low-distortion bass in a compact design with this carbon-fibre cone driver from SB Acoustics. Its high-excursion motor system delivers controlled midbass and midrange for two-way or multi-way speaker builds. The total Q factor (Qts) is 0.41, ensuring versatile enclosure compatibility.

42 990 Ft

(33 850 Ft + VAT)

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Technical data

Nominal diameter	127 mm
Impedance	8 Ω
Sensitivity (SPL at 1 m / 2.83 V)	86 dB
Resonance frequency (Fs)	40 Hz
Maximum linear deflection (Xmax)	5.5 mm

Total Q (Qts)	0.41
Electromagnetic Q (Qes)	0.46
Mechanical Q (Qms)	3.51
DC resistance (Re)	5.9 Ω
Voice coil inductance (L_e)	0.14 mH
BL product (BL)	5.6 T·m
The surface area of the cone (Sd)	82 cm²
Equivalent volume (Iron)	14.9 l
Mechanical compliance of the suspension (Cms)	1.6 mm/N
Drive mechanical losses (RMS)	0.7 kg/s
Membrane material	Carbon fiber
Voice coil diameter	30.5 mm
Weight of a magnet	0.54 g
Subwoofer Series	SB Acoustics CRC Carbon Series
# Mounting holes	4

The SB15CRC30-8 Bass-midwoofer from SB Acoustics represents a superb choice for audiophiles and DIY enthusiasts seeking accurate, low-distortion bass in a compact form factor. This 5-inch driver, part of the acclaimed CRC Carbon Series, is ideally suited for use in high-quality two-way bookshelf speakers, compact subwoofer-satellite systems, or as a dedicated midbass unit in multi-way designs. Its controlled performance makes it equally at home in nearfield monitoring applications or in living room hi-fi setups where space is at a premium but sonic fidelity is paramount.

At the heart of this driver lies a rigid carbon-fibre cone, which ensures excellent stiffness-to-weight ratio and suppresses unwanted breakup modes for cleaner midrange reproduction. The motor system features a 30.5mm voice coil and a high-excursion design, delivering a linear Xmax of 5.5mm for powerful, controlled bass extension. With a total Q factor (Qts) of 0.41 and a resonance frequency (Fs) of 40Hz, the SB15CRC30-8 is optimised for sealed or vented enclosures, offering a balanced blend of efficiency and low-end authority. Its low voice coil inductance (Le) of 0.14mH further enhances high-frequency clarity, while the 8-ohm impedance ensures easy integration with most amplifiers. Precision engineering and robust build quality make this driver a reliable foundation for any serious loudspeaker project.