Nominal Basket Diameter

8", 203 mm

Nominal Impedance*

8 Ω

Power Rating*

250 W

125 W

Resonance

73 Hz

Usable Frequency Range

58 Hz - 5 kHz

Sensitivity*

94 dB

Magnet Weight

20 oz.

Gap Height

0.25", 6.4 mm

Voice Coil Diameter

1.5", 38 mm

Resonant Frequency (fs)

73 Hz

DC Resistance (Re)

5.3 Ω

Coil Inductance (Le)

0.44m H

Mechanical Q (Qms)

4.6

Electromagnetic Q (Qes)

0.68

Total Q (Qts)

0.59

Compliance Equivalent Volume (Vas)

17.7 liters / 0.63 cu.ft.

Peak Diaphragm Displacement Volume (Vd)

67 cc

Mechanical Compliance of Suspension (Cms)

0.28 mm/N

BL Product (BL)

7.8 T-M

Diaphragm Mass Inc. Airload (MMs)

17 grams

Efficiency Bandwidth Product (EBP)

107

Maximum Linear Excursion (Xmax)

3.2 mm

Surface Area of Cone (Sd)

210 cm2

Maximum Mechanical Limit (Xlim)

7.1 mm

Recommended Enclosure Volume

5-7 liters / 0.18-0.25 cu.ft.

16.7-25.5 liters / 0.59-0.9 cu.ft.

Driver Volume Displaced

0.02 cu.ft. / 0.58 liters

Overall Diameter

8.24", 209.3 mm

Baffle Hole Diameter

7.13", 181.1 mm

Front Sealing Gasket

Yes

Rear Sealing Gasket

Yes

Mounting Holes Diameter

0.22", 5.6mm

Mounting Holes B.C.D.

7.75", 196.9mm

Depth

3.25", 82.6 mm

Net Weight

4.3 lbs, 1.95 kg

Shipping Weight

5.1 lbs, 2.31 kgs

Coil Construction

Copper voice coil

Coil Former

Polyimide former

Magnet Composition

Ferrite magnet

Core Details

Vented core

Basket Materials

Pressed steel basket

Cone Composition

Paper cone

Cone Edge Composition

Cloth cone edge

Dust Cap Composition

Solid composition paper dust cap