DELTA-15A

Recommended for professional audio as a mid-bass or vocal wedge in a sealed enclosure. Also suitable as a mid-bass or woofer in vented enclosures.

SPECIFICATION

Nominal Basket Diameter

• 15", 381 mm

Nominal Impedance*

• 8 Ω

Power Rating*

Program Power

• 800W

Watts

• 400 W

Resonance

• 40 Hz

Usable Frequency Range

• 48 Hz - 4 kHz

Sensitivity*

• 100 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)

• 40 Hz

DC Resistance (Re)

• 6.3 Ω

Coil Inductance (Le)

• 0.64m H

Mechanical Q (Qms)

• 8.05

Electromagnetic Q (Qes)

• 0.57

Total Q (Qts)

• 0.53

Compliance Equivalent Volume (Vas)

• 270.7 liters / 9.56 cu.ft.

Peak Diaphragm Displacement Volume (Vd)

• 233 cc

Mechanical Compliance of Suspension (Cms)

• 0.26 mm/N

BL Product (BL)

• 13.2 T-M

Diaphragm Mass Inc. Airload (MMs)

• 62 grams

Efficiency Bandwidth Product (EBP)

• 70

Maximum Linear Excursion (Xmax)

• 2.7 mm

Surface Area of Cone (Sd)

• 864.6 cm2

Maximum Mechanical Limit (Xlim)

• 11.1 mm

MOUNTING INFORMATION

Recommended Enclosure Volume

Sealed

• 37-42.5 liters / 1.3-1.5 cu.ft.

Vented

• 82-161.4 liters / 2.9-5.7 cu.ft.

Driver Volume Displaced

• 0.128 cu.ft. / 3.62 liters

Overall Diameter

• 15.15", 384.8 mm

Baffle Hole Diameter

• 13.87", 352.3 mm

Front Sealing Gasket

• Yes

Rear Sealing Gasket

• Yes

Mounting Holes Diameter

• 0.25", 6.4mm

Mounting Holes B.C.D.

• 14.56", 369.8mm

Depth

• 6.05", 153.7 mm

Net Weight

• 12.3 lbs, 5.58 kg

Shipping Weight

• 14.4 lbs, 6.53 kgs

MATERIALS OF CONSTRUCTION

Coil Construction

• Aluminum 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