Accuton S220-11-221 Woofer 11 Ohm 1 piece

The Accuton S220-11-221 is a 22 cm bass driver with sandwich cone. It has a rear-ventilated voice coil and a ferrite magnet. It convinces among other things by an ultra low free-air resonance frequency of 22.1Hz, which makes it the optimal woofer driver

.

Short Description:

21 cm woofer with sandwich cone. It has a rear vented voice coil.

.

Mechanical data:

Overall diameter / front panel 220 mm

Hole cut-out 191 mm

minimum front panel thickness 9 mm

overall height 105 mm Magnet height 42 mm

Magnet diameter 120 mm

Screw holes Screws Din 7984 / Ø 4.50 Mm

Weight (pair) 6.3 Kg

-

Thiele-Small Parameter:

Sensitivity Spl 88 dB Resistance(DC) Re 5.9 Ohm

Free air resonance frequency Fs 22.1 Hz

Equivalent volume Vas 112.9 Ltr

Mechanical Q factor Qms 5.73

Electrical quality Qes 0.39

Overall quality Qts 0.37

Effective diaphragm area Sd 224 cm2

Moving mass Mms 32.8 Gr

Membrane stress compliance Cms 1.58 mm/N

Mechanical resistance Rms 0.79 Kg*S

.

Voice coil parameters:

Power handling P 150 W Impedance 11 Ohm

Linear excursion Xmax +/-5 mm

Voice coil diameter 38 mm

Voice coil carrier material Ti

Conductor material Cu

Voice coil inductance Le 0.81 mH

Force factor Bl 8.28 N/A

Drive type Overhanging Ferrofluid In air gap No

-

Enclosure Recommendation Closed:

Vb: 39L, -4dB @ 40Hz, -13dB @ 20Hz, F-3dB: 42Hz, Q: 0.71 (typical).

Vb: 101L, -4dB @ 40Hz, -10dB @ 20Hz, F-3dB: 44Hz, Q: 0.50 (extended bass)

.

Enclosure Recommendation Bass Reflex:

Vb: 66L, port diameter: 70mm, length: 300mm, Fres: 22Hz, F-3dB: 27Hz, Q: 0.58 (optimum).

Vb: 101L, port diameter: 70mm, length: 150mm, Fres: 23.5Hz, F-3dB: 24Hz, Q: 0.50 (extended bass)

Vb: 56L, port diameter: 70mm, length: 300mm, Fres: 24Hz, F-3dB: 29Hz, Q: 0.61 (0.7dB ripple @ 50Hz)