Accuton AS250-8-552

Description

The Accuton AS250-8-552 is a bass speaker with a diameter of 250 mm and an aluminum honeycomb sandwich cone. The new design provides an ideal acoustic center that is identical to Accuton's CELL tweeter and midrange drivers.

The innovative overhang construction combines the advantages of traditional overhang and underhang constructions and delivers a high linear excursion with extremely low distortion. A particularly hard aluminum sandwich cone was developed for the CELL bass drivers, which enables very low delay and energy storage. The hidden centering reduces the overall outer diameter and enables a linear excursion of up to +/- 16 mm. A newly developed centering spider enables large excursion without compression.

We recommend our Accuton AS250-8-552 for applications from 20 Hz - 600 Hz.

Brief description:

• 25cm subwoofer with aluminum honeycomb sandwich cone. It has a rear-ventilated voice coil.

Mechanical data

• Total diameter / front panel 250 mm
  
• Hole cut-out 230 mm
• Minimum front panel thickness 18 mm
  
• Overall height 141 mm
  
• Magnet height 56.5 mm
  
• Magnet diameter 210 mm
  
• Screw holes Screws Din 7984 / Ø 4.50 Mm
• Weight 23 kg

Thiele-Small parameters

• Sensitivity Lp 87 dB
  
• Resistance(direct current) Re 7.3 Ohm
  
• Outdoor resonance frequency Fs 22 Hz
  
• Equivalent volume Vas 119 Ltr
  
• Mechanical quality Qms 5.0
  
• Electrical quality Qes 0.40
  
• Overall quality Qts 0.38
  
• Effective diaphragm area Sd 382 cm2
  
• Moving mass Mms 92 Gr
  
• Compliance of the membrane tension Cms 0.57 mm/N
  
• Mechanical resistance Rms 2.52 Kg*S

Voice coil parameters

• Load capacity P 300 watts
  
• Impedance 8 Ohm
  
• Linear deflection Xmax +/-9 mm
  
• Diameter of the voice coil 114 mm
  
• Voice coil former material Ti
  
• Conductor material Cu
  
• Inductance of the voice coil Le 0.67 mH
  
• Force factor Bl 14.8 N/A
  
• Drive variant Overhanging
  
• Ferrofluid In air gap No

Housing recommendation Closed

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

Enclosure recommendation bass reflex

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

Frequency response

Note

Not suitable for use in vehicles.

• This speaker chassis was specially developed for use in home and studio applications . For applications in the automotive sector, we recommend using the special automotive series from Accuton, which is available from Masori on request.
• The automotive version (Accuton Carhifi version) of Accuton meets the strict automotive standards and is specially designed for use in passenger cars and various other vehicles. It is resistant to vibrations, weather influences, heat and cold that can occur in an automotive environment. This ensures optimum audio quality and reliability.
• Contact us at Masori for more information on the Carhifi Automotive version of Accuton. We are happy to help you to find the right solution for your automotive requirements and to enable an optimal sound experience in your vehicle.