9½″ SATORI WO24P-8 / Paper


  • Hard paper cone for improved piston operation (made in-house)
  • Large optimized motor system with under-cut pole piece and dual shorting rings
  • Vented aerodynamic cast aluminium chassis for optimum
    strength and low compression
  • Soft low damping rubber surround for optimum transient response
  • Linear symmetric suspension design for improved dynamic
  • Non-conducting fibre glass voice coil former for minimum damping
  • Long life silver lead wires attached 180° apart for improved stability
  • Vented pole piece for reduced compression
  • Low piston to chassis diameter ratio
  • Gasket and bolt hole protrusions for reduced coupling to speaker cabinet
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Additional information

Nominal Impedance

8 Ω

DC resistance

Re 5.8 Ω

Voice coil inductance

Le 0.56 mH

Effective piston area

Sd 255 cm2

Voice coil diameter

49.5 mm

Voice coil height

23 mm

Air gap height

6 mm

Linear coil travel (p-p)

17 mm

Magnetic flux density

1.1 T

Magnet weight

1.36 kg

Net Weight

3.7 kg

Free air resonance

Fs 24.5 Hz


(2.83V/1m) 88 dB

Mechanical Q-factor

Qms 5.7

Electrical Q-factor

Qes 0.41

Total Q-factor

Qts 0.38

Moving mass incl. air

Mms 44.5 g

Force factor

Bl 9.9 Tm

Equivalent volume

Vas 87.5 liters


Cms 0.95 mm/N

Mechanical loss

Rms 1.2 kg/s

Rated power handling

90 W


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



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