S220-6-221 8,5'' Sandwich Woofer

The Accuton S220-6-221 is an 8-inch woofer with an extremely rigid ceramic sandwich cone. The FEA-optimized overhang voice coil design with 38 mm aluminum voice coil former guarantees low energy storage during decay and excellent heat transfer. The low-loss rubber surround and thin fabric center spider center the moving parts with high linear excursion.

Highlights

Overhung Motor Design
38 mm Titanium VC Former
Soft Rubber Surround
Vented VC, Pole Piece & Spider
32 HZ - 2 KHZ in vented Box

Product details

Accuton S220-6-221 8,5'' Sandwich Woofer

The woofer has a sensitivity of 88 dB, resistance (DC) of 5.9 Ohm, free air resonance frequency of 22.1 Hz, equivalent volume Vas of 112.9 Ltr, mechanical quality Qms of 5.73, electrical quality Qes of 0.39, total quality Qts of 0.37, effective membrane area Sd of 224 Cm2, moving mass Mms of 32.8 G, membrane stress compliance Cms of 1.58 Mm/N, mechanical resistance Rms of 0.79 Kg*S.

The woofer has an overall diameter/front panel of 220 mm, hole cutout of 191 mm, minimum front panel thickness of 9 mm, overall height of 105 mm, magnet height of 42 mm and magnet diameter of 120 mm.

The woofer can be used in a closed enclosure with Vb: 39L, -4dB @ 40Hz, -13dB @ 20Hz, F-3dB: 42Hz, Q: 0.71 (Balanced). Vb: 101L, -4dB @ 40Hz, -10dB @ 20Hz, F-3dB: 44Hz, Q: 0.50 (Bass Boost) 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 boost @ 50Hz).

Specifications

Article number
S220-6-221
EAN
8785256847464
Power Handling (RMS)
150 W
Sensitivity (SPL at 1m / 2.83V)
88 dB
Voice Coil Diameter
38 mm
DC Resistance (Re)
5.9 Ohm
Voice Coil Inductance (Le)
0.81 mH
Resonant Frequency (Fs)
22.1 Hz
Mechanical Q (Qms)
5.73
Electromagnetic Q (Qes)
0.39
Total Q (Qts)
0.37
Diaphragm Mass Inc. Airload (Mms)
32.8 g
Mechanical Compliance of Suspension (Cms)
1.58 mm/n
Surface Area of Cone (Sd)
224 Cm2
BL Product (BL)
8.28 N/A
Compliance Equivalent Volume (Vas)
112.9 ltr
Maximum Linear Excursion (Xmax)
5 mm
Driver's Mechanical Losses (Rms)
0.79 Kg*s
Overall Outside Diameter
220 MM
Overall Depth
105 MM
Baffle Cutout Diameter
191 MM