LF Cast Chassis / Ferrite

Celestion
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OEM

CF0820BMB

CF0820BMB
CF0820BMB

  • Balanced airflow venting provides enhanced cooling
  • Half-roll elastomer surround

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 Rating 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
50-6,000Hz
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
50.5Hz
Mms
32.35g/1.14oz
Qms
5.095
Qes
0.394
Qts
0.366
Re
5.45Ω
Vas
22.42lt/0.79ft3
BI
11.92Tm
Cms
0.31mm/N
Rms
2.01kg/s
Le (at 1kHz)
0.78mH

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