CF0820BMB
8-inch, cast aluminium chassis, ferrite magnet bass and mid/bass driver
- Balanced airflow venting provides enhanced cooling
- Half-roll elastomer surround
Specifications
500W
Continuous power rating
93dB
Sensitivity
2in
Voice coil diameter
Nominal diameter
200mm / 8in
Power rating
250W
Continuous power rating
500W
Rated impedance
8Ω
Sensitivity
93dB
Frequency range
50-6000Hz
Chassis type
Cast aluminium
Magnet type
Ferrite
Magnet weight
0.99kg / 35oz
Voice coil diameter
50mm / 2in
Voice coil material
Copper clad aluminium
Former material
Glass fibre
Cone material
Treated paper
Surround material
Elastomer
Suspension
Single
Gap height (Hg)
8mm / 0.31in
VC winding height (Hvc)
18.5mm / 0.73in
Additional impedances
16Ω
Parameters
Sd
226.98cm2 / 35.18in2
Fs
50.50Hz
Mms
32.35g / 1.14oz
Qms
5.095
Qes
0.394
Qts
0.366
Re
5.45Ω
Vas
22.42l / 0.79ft3
BI
11.92Tm
Cms
0.31mm/N
Rms
2.01kg/s
Le (at 1kHz)
0.78mH
Xmax
7.25mm / 0.29in
Mounting Information
Overall diameter
215mm / 8.5in
Overall depth
108mm / 4.3in
Cut-out diameter
187mm / 7.4in
Mounting hole dimensions
7x5.6mm / 0.28x0.22in
Number of mounting holes
8
Mounting hole PCD
197-200mm / 7.8-7.9in
Unit weight
3.1kg / 6.8lb
Packed Dimensions & Weight
Multi pack qty
8
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
Frequency Response and Impedance Curves
Topmost curve: Frequency response on axis | Secondary curve: Frequency response at 45° off axis
Power rating: 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.
Continuous power rating: Defined as 3dB greater than the AES rating.
Sensitivity: Measured on axis at 1W, 1m in 2π anechoic environment.
Parameters: Measured after unit subjected to pre-conditioning signal.
Xmax: 0.5*(Hvc-Hg) + 0.25*Hg
