Magnet Type
Nominal diameter (in/mm)
Program power (W)
Voice Coil Diameter (in)
Nominal Impedance (ohm)
Sensitivity (db 1W/1m)


Key Features

Special design for Hi-end application

Very high excursion suspension

General Specifications

Musical power (W): 800
Nominal power AES (W) 350
Nominal diameter (''/mm) 12/320
Nominal impedance (Ω) 4+4
Voice coil diameter (mm): 75
Sensitivity 1W/1m (dB) 92.5
Spare part code

Thiele Small Parameters

Note T/S parameters measured with coils in series
Re 6.15 ohm
Fs 36 Hz
Qms 5.1
Qes 0.38
Qts 0.35
Mms 99 g
D 255 mm
Vas 73 l
BxL 19 Tm
Linear Mathematical Xmax 7.5 mm
n 0.85
Le (1kHz) 1.4 mH


Basket Type Aluminium
Magnet Type Ferrite
Cone Material Treated paper
Suspension Material Molded rubber
Spider Material Nomex
Former material Fiberglass
Winding material Copper
Connector type Push-Button
Cone shape Straight
Gap height 10 mm

Dimension and weight

Overall diameter 315 mm
Total depth 120 mm
Flange thickness 14.5 mm
Front mount baffle cutout diameter 282 mm
N. of mounting holes 8
Mounting holes diameter (mm) 7 mm
Bolt circle diameter 295 mm
Gross weight


Model Code Info
HSB320-22 HSB320-22