Special Order ~ Lead Time Varies
Accuton Cell Concept AS190-9-251 8" Aluminum Sandwich Dome Woofer
Spec Sheet PDF
LEAP Design with C90-6-724 5″ midrange + C25-6-158 tweeter
- Full featured Cell concept
- Ideal acoustical center
- No compression design
- Proprietary motor system
- 30Hz - 1000Hz usuable range in bass reflex enclosure
The AS190-9-251 is an 8 inch bass driver with aluminum sandwich dome, being the first in an entirely new approach to accuton speaker design. Note that the OD is 7.5", but piston area is that of a normal 8" driver.
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 AS190-9-251 for an application from 30 Hz – 1000 Hz.
Click here to view full specs on Accuton website.
Vented box design parameters:
Vb: 24L, Port diameter: 70mm, Length: 300mm, Fres: 36Hz, F-3dB: 36Hz, Q: 0.58 (optimal)
Vb: 35L, Port diameter: 70mm, Length: 245mm, Fres: 33Hz, F-3dB: 30Hz, Q: 0.50 (extended bass)
Closed Box design parameters:
Vb: 11L, -9dB @ 40Hz, F-3dB: 63Hz, Q: 0.71 (typical)
Vb: 35L, -7dB @ 40Hz, F-3dB: 70Hz, Q: 0.50 (extended bass)
Mechanical Data
Specification Value Unit Overall diameter 190 mm Cutout Diameter/Square 170 mm Min. frontplate thickness 16 mm Overall depth 137 mm Motor assembly depth 52 mm Motor assembly diameter 156 mm Screwfitting DIN 7984 / Ø 4.50 mm Terminal +: 6.3 x 0.8 / -: 4.8 x 0.8 mm Shipping weight (pair) 14 Kg Shipping box size (pair) 245/440/245 mm
Thiele/Small Parameters
Specification Value Unit Sensitivity (2.83V / 1m) Spl 84 dB DC-resistance Re 8.6 Ohm Resonance frequency Fs 33.4 Hz Equivalent volume of air Vas 26.7 ltr Mechanical Q Qms 4.75 Electrical Q Qes 0.49 Total Q Qts 0.44 Effective piston area Sd 202 Cm2 Moving mass Mms 49.4 g Suspension compliance CMs 0.46 mm/n Mechanical resistance Rms 2.18 Kg*s
Voice Coil Parameters
Specification Value Unit Power handling P 250 W Linear excursion Xmax +/-9 mm Voice coil diameter 78 mm Voice coil former material Ti Voice coil material CCAW Voice coil inductance Le 1.05 mH Force factor Bl 13.5 N/A Motor type Overhung Ferrofluid filling No
Specs for optional 4 ohm version AS190-4-251 (curves not available yet):
Re: 4 Ohms
Fs: 38Hz
Vas: 20L
Mms: 49,5gr.
Sd: 202cm²
Qe: 0.47
Qm: 5
Qt: 0.43
BL: 10.1
