SB34SWPL76-4 12” Paper Cone Subwoofer

A high quality subwoofer. With impressive low-end extension using a made in-house hard paper cone.
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  • Long stroke design
  • Linear high stability surround
  • Low damping rubber surround
  • 3” copper voice coil
  • Non-conducting reinforced fibre glass coil former
  • Very stiff hard paper cone (made in-house)
  • Vented cast aluminum chassis
  • Large vented motor system and vented coilformer
  • Long life silver lead wires


Product details

SB Acoustics SB34SWPL76-4 12” Paper Cone Subwoofer


SB Acoustics is known for their high value products. And the SB34SWPL76-4  is no exception. With a very stiff hard paper cone made in-house. This allows SB Acoustics to have control over the tolerances used in the manufacturing process. Resulting in a accurate and consistent product. Making this a powerful and exceptionally stable subwoofer for any subwoofer DIY project.


Data sheet

4 Ohm
Driver type
85 dB(2.83V/1m)
Resonance frequency (fs)
19 Hz
DC resistance (Re)
3.5 Ohms
Mechanical Q (Qms)
Electrical Q at Fs (Qes)
Total Q factor (Qts)
Speaker diameter
Voice coil inductance (L)
5.3 mH
Effective mechanical mass incl air load (mms)
266 g
Effective piston radiating area (Sd)
458 cm2
Force factor (BL)
18 Tm
Equivalent volume of compliance (Vas)
78.5 Ltr
Overall diameter
346 mm
Mounting diameter
305.2 mm