Specifications
Nominal Diameter
Nominal Impedance
Minumum Impedance
Power Handling
200 mm (8 in.)
8 Ω
6.6 Ω
(90 –900 Hz)
Nominal1
200 W
400 W
99 dB
Continuous Program2
Sensitivity (1W/1m)3
Frequency Range
Voice Coil Diameter
Winding Material
Former Material
90-5000 Hz
50 mm (2 in.)
Aluminium
Kapton
Winding Depth
Magnetic Gap Depth
Flux Density
9 mm (11/32 in.)
8 mm (5/16 in.)
1.25 T
Also available in 16 Ω, data upon request
4
Thiele & Small Parameters
Fs
94 Hz
5.4 Ω
0.3
Re
Qes
Qms
Qts
Vas
Sd
η0
5.5
0.29
13 dm.3 (0.46 cu. ft.)
220 cm.2 (34.1 sq. in.)
3.4 %
X max
Mms
Bl
1 mm.
15 gr.
12.7 Tm
8 PL 21 | Midrange
Le
0.3 mH
Extremely high efficiency midrange,
2’’ aluminium voice coil with very flat
response up to 5 kHz.
Mounting and Shipping Informations
Overall Diameter
Bolt Circle Diameter
Baffle Cutout Diameter
Depth
225 mm. (8.8 in.)
210 mm. (8.3 in.)
187 mm. (7.4 in.)
89 mm. (3.5 in.)
9.5 mm. (3/8 in.)
4.4 Kg. (9.7 lb.)
4.7 Kg. (10.3 lb.)
220x220x130 mm
(8.7x8.7x5.1 in.)
Flange and Gasket Thickness
Net Weight
Shipping Weight
Shipping Box
1 2 hours test made with continuous pink noise signal (6 dB crest factor) within the
specified range . Power calculated on rated minimum impedance. Loudspeaker in
free air.
2 Power on Continuous Program is defined as 3 dB greater than the Nominal rating.
3 Applied RMS Voltage is set to 2.83V for 8 ohms and 4V for 16 ohms Nominal
Impedance. Average SPL from 200 to 4000 Hz.
4 Thiele-Small parameters are measured after a high level 20 Hz sine wave precon-
ditioning test.
5
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