LF Cast Chassis / Ferrite

Celestion
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OEM

CF0820BMB

CF0820BMB
CF0820BMB

Features

  • 8" ferrite woofer purpose-built for bass and mid/bass applications
  • Delivers 250Wrms (AES standard) power handling and 93dB sensitivity
  • Balanced Airflow Venting (BAV) increases airflow to provide enhanced cooling
  • Finite element analysis optimised magnet assembly delivers remarkably low harmonic distortion and very high motor strength
  • Half-roll elastomer surround provides longer Xmax excursion and improved modal distribution for reduced distortion
  • Smart chassis design minimises reflections back onto the cone, significantly reducing acoustic distortion

Frequency Response and Impedance Curves

Product Graph
  1. Tested for two hours using a continuous, band-limited pink noise signal as per AES standard. Power calculated on minimum impedance. Loudspeaker tested in free air.
  2. Continuous Power Handling is defined as 3dB greater than the AES rating.
  3. Measured on axis at 1W, 1m in 2π anechoic environment.
  4. Xmax derived from: (voice coil winding width-gap depth)/2.
  5. Small signal parameters measured after unit subjected to pre-conditioning signal.

General Specifications

Nominal diameter
200mm/8in
Power rating1
250Wrms
Continuous power rating2
500W
Nominal impedance
Sensitivity3
93dB
Frequency range
50-6000Hz
Voice coil diameter
50mm/2in
Chassis type
Cast aluminium
Magnet type
Ferrite
Magnet weight
0.99kg/34.8oz
Coil material
Copper clad aluminium
Former material
Glas fibre
Cone material
Treated paper
Surround material
Elastomer
Suspension
Single
Xmax4
5.25mm/0.21in
Gap depth
8mm/0.31in
Voice coil winding width
18.5mm/0.73in

Small Signal Parameters

D
0.17m/6.69in
Fs
52.5Hz
Mms
28.82g/1.02oz
Qms
5.32
Qes
0.372
Qts
0.347
Re
5.3Ω
Vas
23.24lt/0.82ft3
BI
11.65Tm
Cms
0.312mm/N
Rms
1.79kg/s
Le (at 1kHz)
0.59mH

Mounting Information

Overall diameter
215mm/8.5in
Overall depth
108mm/4.3in
Cut-out diameter
187mm/7.4in
Mounting slot dimensions
7 x 5.6mm/0.28in x 0.22in
Number of mounting slots
8
Mounting PCD range
197-200mm/7.8-7.9in
Unit weight
3.1kg/6.8lb

Packed Dimensions & Weight

Multi pack size W x D x H
465mm x 455mm x 250mm
/ 18.3in x 17.9in x 9.8in
Multi pack weight
27.5kg/60lb