SB Acoustics SB20PFCR30-4 Full-range Woofer

SB ACOUSTICS | Broadband subwoofer

SB Acoustics SB20PFCR30-4 Full-range Woofer

Name: SB Acoustics Acoustics mélysugárzó 8" | HQ AudioParts
Brand: SB Acoustics
SKU: SB20PFCR30-4
Price: 15990.00 HUF
Availability: LimitedAvailability

SKU: SB20PFCR30-4

203.2 mm 4 Ω

Achieve full-range sound with a single driver using this 8-inch paper cone woofer, ideal for compact hi-fi or open-baffle designs. Its lightweight cone and motor system deliver a wide frequency response with natural midrange clarity. The total Q factor (Qts) is 0.33, making it suitable for sealed or vented enclosures.

15 990 Ft

(12 591 Ft + VAT)

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Külső raktár 2. 8 pcs júl. 9.

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Technical data

Nominal diameter	203.2 mm
Impedance	4 Ω
Sensitivity (SPL at 1 m / 2.83 V)	92.5 dB
Resonance frequency (Fs)	34 Hz
Maximum linear deflection (Xmax)	5.75 mm

Total Q (Qts)	0.33
Electromagnetic Q (Qes)	0.37
Mechanical Q (Qms)	2.78
DC resistance (Re)	3.4 Ω
Voice coil inductance (L_e)	0.71 mH
BL product (BL)	6.6 T·m
The surface area of the cone (Sd)	216 cm²
Equivalent volume (Iron)	66.2 l
Moving mass with air load (Mms)	22.4 g
Mechanical compliance of the suspension (Cms)	1 mm/N
Drive mechanical losses (RMS)	1.7 kg/s
Woofer type	DS2 Audio DAC
Membrane material	Paper
Voice coil diameter	30.5 mm
Weight of a magnet	54 g

The SB20PFCR30-4 8" Paper Cone Full-range Woofer from SB Acoustics represents a refined approach to single-driver loudspeaker design, offering a compelling blend of natural sound reproduction and engineering precision. This broadband subwoofer is ideally suited for compact hi-fi systems, open-baffle configurations, or any application where a minimalist, high-quality full-range solution is desired. Its ability to cover a wide frequency spectrum with a single driver makes it particularly attractive for DIY enthusiasts seeking to build efficient, space-saving speakers without compromising on sonic coherence.

Technically, this driver is built around a lightweight paper cone and a carefully optimised motor system, which together deliver a sensitivity of 92.5 dB (SPL 1m/2.83V) and a remarkably low resonance frequency of 34 Hz. The total Q factor of 0.33, combined with a mechanical Q of 2.78 and an electromagnetic Q of 0.37, ensures controlled, articulate bass response and excellent transient behaviour. With a maximum linear excursion of 5.75 mm, a 30.5 mm voice coil, and a DC resistance of 3.4 ohms, the SB20PFCR30-4 is engineered for both power handling and finesse. Its 4-ohm impedance and 54-gram magnet system further contribute to its authoritative yet natural performance, making it a versatile choice for high-fidelity audio projects.