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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
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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
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Short Description:
21 cm woofer with sandwich cone. It has a rear vented voice coil.
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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
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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
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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
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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)
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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)
S220-11-221
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Since 1994 the Thiel & Partner GmbH is developing, designing, producing and distributing under the registred trademark accuton® high quality loudspeaker made of stiff membrane materials like ceramics, diamond and aluminium sandwich.
It is our declared aim to be the provider of the constractional and phonetical best dynamic speaker drivers on the market. We also provide our customers an extensive support and collaboration in areas like case construction, design of the crossover and implemantation of electronic components.
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