CF0820M
Dedicated midrange driver
Copper sleeved pole reduces HF inductive rise
Narrow edged chassis for close packing
Airflow vented for dynamic heat dispersion
Specifications
250W
Nominal Power Rating
98dB
Sensitivity
2in
Voice coil diameter
Nominal Diameter
200mm/8in
Nominal Power Rating
250W
Continuous Power Rating
500W
Sensitivity
98dB
Rated Impedance
8Ω
Frequency Range
150Hz-6000Hz
Voice coil diameter (mm)
50mm
Voice coil diameter (in)
2in
Chassis Type
Cast aluminium
Magnet Type
Ferrite
Magnet Weight
1.3kg/45oz
Voice coil material
Copper clad aluminium
Former Material
Glass fibre
Cone material
Treated paper
Surround Material
Cloth-sealed
Suspension
Single
Xmax
1.5mm/0.06in
Gap Depth
8mm/0.31in
Voice coil winding width
11mm/0.43in
Small Signal Parameters
Sd
226.98cm2/35.18in2
Fs
202.00Hz
Mms
21.38g/0.75oz
Qms
1.784
Qes
0.831
Qts
0.567
Re
5.39Ω
Vas
2.12L/0.07ft3
BI
13.27Tm
Cms
0.03mm/N
Rms
15.21kg/s
Le (at 1kHz)
0.12mH
Mounting Information
Mounting slot dimensions
7mm x 5.6mm/0.28in x 0.22in Ø
Mounting slot PCD
197mm-200mm/7.8in-7.9in
Number of mounting slots
8
Overall Depth
113mm/4.45in
Overall Diameter (mm)
215mm
Overall Diameter (in)
8.5in
Cut-out diameter
187mm/7.4in
Unit Weight
3.4kg/7.5lb
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 is defined as 3dB greater than the AES rating.
Sensitivity measured on axis at 1W, 1m in 2Π anechoic environment.
Xmax is derived from: (voice coil winding width-gap depth)/2.
Small Signal Parameters are measured after unit subjected to pre-conditioning signal.