Overview

Low frequency woofer for pro audio mid-bass or floor monitor applications in a sealed enclosure. Also suitable as a woofer in vented, bass guitar or PA enclosures.

SPECIFICATION

Nominal Basket Diameter

12", 305 mm

Nominal Impedance*

4 Ω

Power Rating*

Program Power

1000 W

Watts

500 W

Resonance

52 Hz

Usable Frequency Range

45 Hz - 2.3 kHz

Sensitivity*

93.1 dB

Magnet Weight

56 oz.

Gap Height

0.375", 9.5 mm

Voice Coil Diameter

2.5", 64 mm

THIELE & SMALL PARAMETERS

Resonant Frequency (fs)

52 Hz

DC Resistance (Re)

3.2 Ω

Coil Inductance (Le)

0.94m H

Mechanical Q (Qms)

8.21

Electromagnetic Q (Qes)

0.47

Total Q (Qts)

0.44

Compliance Equivalent Volume (Vas)

63.7 liters / 2.25 cu.ft.

Peak Diaphragm Displacement Volume (Vd)

243 cc

Mechanical Compliance of Suspension (Cms)

0.17 mm/N

BL Product (BL)

10.9 T-M

Diaphragm Mass Inc. Airload (MMs)

53 grams

Efficiency Bandwidth Product (EBP)

111

Maximum Linear Excursion (Xmax)

4.8 mm

Surface Area of Cone (Sd)

506.7 cm2

Maximum Mechanical Limit (Xlim)

13.5 mm

MOUNTING INFORMATION

Recommended Enclosure Volume

Sealed

21-74 liters / 0.7-2.6 cu.ft.

Vented

28-110 liters / 1-3.9 cu.ft.

Driver Volume Displaced

0.079 cu.ft. / 2.25 liters

Overall Diameter

12.03", 305.6 mm

Baffle Hole Diameter

11.07", 281.2 mm

Front Sealing Gasket

Yes

Rear Sealing Gasket

Yes

Mounting Holes Diameter

0.25", 6.4mm

Mounting Holes B.C.D.

11.59", 294.4mm

Depth

5.35", 135.9 mm

Net Weight

11.8 lbs, 5.35 kg

Shipping Weight

14 lbs, 6.35 kgs

MATERIALS OF CONSTRUCTION

Coil Construction

Copper voice coil

Coil Former

Kapton former

Magnet Composition

Ferrite magnet

Core Details

Vented and extended core

Basket Materials

Pressed steel basket

Cone Composition

Treated paper cone

Cone Edge Composition

Cloth cone edge

Dust Cap Composition

Solid composition paper dust cap

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