We purchase discontinued drivers from JM Lab of France on a regular basis. These high quality drivers were used in some top rated JM Lab speaker systems.

6VE3251B Woofer

Special Case of 6 for $90.00

This great shielded unit is available for $30.00 each. The woofer has a Polyglass cone and injection moulded plastic frame.

Focal JM Lab 6VE3251B

6.5 inch Polyglass woofer midrange
Video Shielded
Classic Shape highly damped molded ABS Frame
Curvealinear Polyglass cone
Smooth rolloff at 4000Hz
Rubber surround, rubber dust cap, conex spider
- 25mm voice coil, aluminum bobbin
 
Specifications:
Power = up to 100 watt
Fs = 59.77 Hz
Vas = 14.02 liter
Qts = 0.568
Qes = 0.660
Qms = 4.070
Nominal impedance = 8 ohm
Zmin = 7 ohm
Re = 6.21 ohm
Le = 1.0 mH
Lvc = 12.5 mm
H gap = 5.0 mm
Xmax = 3.75 mm
Mms = 10.53 gram
D = 12.45 cm
Sd = 121.74 cm^2
Sensitivity = 89 dB at 2.83 volt at 1 meter
Efficency = 88.4 dB at 1 watt at 1 meter
N = 0.44 percent
Bl = 6.10 N/A
T = 579.28 ma-2
Rms = 0.972 kg/s
Cms = 6.73E 04 m/N
Ces = 283 mF
Les = 25.05 mH
Res = 38.3 ohm
Cas = 9.98E 06 m5/N
Mas = 71.05 Kg/m4
Ras = 6556 ohms.ac
 
Required Zobel network;
Resistor = 10 ohms
Capacitor = 10 uF
 
Cabinet cut out hole = 147 mm
Frame Face; round = 187.4 mm, square = 167.4 mm, thickness = 5.1 mm
Depth = 89 mm
 
Recommended Box alignments;

Optimum Sealed Box; 1 cubic foot, -3dB = 69 Hz, Qts = 0.7.

Smallest Sealed Box; 500 cubic inches, -3dB = 76 Hz, Qts = 0.98.

Smallest Vented Box;1 cubic foot, -3dB = 40 Hz, Vent = 40 Hz, port = 3 inch diameter by 8.5 inch long.

Best Quality Vented Box;1.6 cubic foot, -3dB = 34 Hz, Vent = 40 Hz, port = 3 inch diameter by 4 inch long.