[. . . ] [. . . ] impedance DC resistance VC diameter VC height Former Layers Wire Inductance Xmax Magnet (hxd) Magnet weight Flux density Polyglass Butyl 4 ohm 2. 9 ohm 50 mm 20 mm Aluminum 4 Copper 1. 5 mH 6 mm 120 x 25 mm 870 g 0. 8 T 8 mm 3. 95 kg 0. 31 in 8. 7 Ib 1/4 in 43/4 x 1 in 1. 93 lb 2 in 3/4 in
Response curve
Vented enclosure
Gap height Net weight
Parameters
SPL (dB) 1W/1m
Fs Vas Qts Qes Qms Re
39. 01 Hz 21. 43 I 0. 44 0. 51 3. 47 2. 9 ohm 330 cm2 1. 53E-07 m5/N 109. 11 kg/m4 7707. 32 ohm. ac 1. 40E-04 m/N 118. 87 g 8. 40 kg/s 717. 49 mF 23. 20 mH 19. 73 ohm 12. 87 N/A 85. 8 dB/W/m 0. 25 lb 511/16 in2 0. 75 Ft3
15 litres (0. 530 cu. ft. ) F - 3 = 33Hz / Deep and articulate bass
Frequency (Hz)
Sd Cas Mas Ras Cms Mms Rms Ces
Mechanical Drawing
Les Res BI SPL
©Focal-JMlab - SCFR050504/1
Suggested application
Load Vented Vented
Unit: mm
Vol 15 l 20 l 30 l
Fb 51 44 36
F-3 (Hz) 46 40 33
Ql 7 7 7
Vented
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