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AS250-8-552 CELL Aluminium-Sandwich Bass

The AS250-8-552 is an 11 inch bass driver with aluminum honeycomb sandwich dome, being the first in an entirely new approach to accuton speaker design. An ideal acoustical center has been achieved, which is identical with our CELL tweeters and midranges. Its novel designed overhung motor combines the advantages of traditional over- and underhung designs, delivering high linear excursion and ultra low distortion. An exceptionally hard aluminum sandwich dome was developed for the CELL bass drivers that allows for negligible delay and energy storage. The hidden surround serves for reduced outer diameter and linear excursion of +/- 16mm. A new developed spider shape makes huge excursion without compression possible.
We recommend our AS250-8-552 for an application from 20 Hz - 600 Hz.

 

Vented box design parameters

Vb: 60L, Port diameter: 100mm, Length: 440mm, Fres: 27Hz, F-3dB: 30Hz, Q: 0.58 (optimal)
Vb: 80L, Port diameter: 100mm, Length: 280mm, Fres: 28Hz, F-3dB: 28Hz, Q: 0.50 (extended bass)

Closed Box design parameters

Vb: 30L, -9dB @ 30Hz, F-3dB: 51Hz, Q: 0.71 (typical)
Vb: 80L, -7dB @ 30Hz, F-3dB: 55Hz, Q: 0.50 (extended bass)

AS250-08-552-CELL_DimWeb-Draht.png

Dome material Aluminium-Sandwich
Application Bass
Overall diameter 250 MM
Cutout Diameter/Square 230 MM
Overall depth 141 MM
Motor assembly depth 56.5
Motor assembly diameter 210
   

Main Features

Full featured cell concept
Ideal acoustic center
No compression design
Proprietary motor system
20 HZ - 600 HZ in vented Box

TECHNOLOGY
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Mechanical Data

Specification   Value Unit
Overall diameter   250 mm
Cutout Diameter/Square   230 mm
Min. frontplate thickness   18 mm
Overall depth   141 mm
Motor assembly depth   56.5 mm
Motor assembly diameter   210 mm
Screwfitting   DIN 7984 / Ø 4.50 mm
Terminal   +: 6.3 x 0.8 / -: 4.8 x 0.8 mm
Shipping weight (pair)   23 Kg
Shipping box size (pair)   320/320/450 mm
   

Thiele/Small Parameters

Specification   Value Unit
Sensitivity (2.83V / 1m) Spl 87 dB
DC-resistance Re 7.3 Ohm
Resonance frequency Fs 22 Hz
Equivalent volume of air Vas 119 ltr
Mechanical Q Qms 5.0  
Electrical Q Qes 0.40  
Total Q Qts 0.38  
Effective piston area Sd 382 Cm2
Moving mass Mms 92 g
Suspension compliance CMs 0.57 mm/n
Mechanical resistance Rms 2.52 Kg*s
   

voice coil parameters

Specification   Value Unit
Power handling P 300 W
Linear excursion Xmax +/-9 mm
Voice coil diameter   114 mm
Voice coil former material   Ti  
Voice coil material   Cu  
Voice coil inductance Le 0.67 mH
Force factor Bl 14.8 N/A
Motor type   Overhung  
Ferrofluid filling   No  
   

Frequency Response [DB]

FRQ_AS250-8-552-Prog.png

Impedance [Ohm]

IMP_AS250-8-552_prog.png

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