5″ SB15CRC30-4 / Carbon


  • Rohacell®/Carbon fibre sandwich cone for optimized stiffness/damping ratio
  • Vented cast aluminum chassis for optimum strength and low compression
  • Low damping rubber surround for improved transient response
  • Non-conducting fibre glass voice coil former for minimum damping
  • Extended copper sleeve on pole piece for low inductance and low distortion
  • CCAW voice coil for reduced moving mass
  • Long life silver lead wires
  • Vented pole piece for reduced compression
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Additional information

Nominal Impedance

4 Ω

DC resistance

Re 3.1 Ω

Voice coil inductance

Le 0.12 mH

Effective piston area

Sd 82 cm2

Voice coil diameter

30.5 mm

Voice coil height

16 mm

Air gap height

5 mm

Linear coil travel (p-p)

11 mm

Magnetic flux density

1.0 T

Magnet weight

0.54 kg

Net Weight

1.46 kg

Free air resonance

Fs 37 Hz


(2.83 V / 1 m) 88.5 dB

Mechanical Q-factor

Qms 3.39

Electrical Q-factor

Qes 0.36

Total Q-factor

Qts 0.32

Moving mass incl. air

Mms 10.2 g

Force factor

Bl 4.55 Tm

Equivalent volume

VAS 17.3 liters


Cms 1.81 mm/N

Mechanical loss

Rms 0.7 kg/s

Rated power handling

* 50 W


* IEC 268-5, T/S parameters measured on drive units that are broken in.



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