Product Description

DELTALITE™ 2512 Speaker

Recommended for professional audio as a mid/hi or full-range and monitor; also for bass guitar. Works well in sealed or vented enclosures.

Nominal Basket Diameter 12″, 304.8mm
Nominal Impedance* 8 ohms
Power Rating**
Watts 250W
Music Program 500W
Resonance 37Hz
Usable Frequency Range 48Hz – 4kHz
Sensitivity*** 99.9dB
Magnet Weight 7 oz.
Gap Height 0.27″, 7mm
Voice Coil Diameter 2.5″, 63.5mm

Resonant Frequency (fs) 37Hz
DC Resistance (Re) 5.04
Coil Inductance (Le) 0.46mH
Mechanical Q (Qms) 3.13
Electromagnetic Q (Qes) 0.44
Total Q (Qts) 0.39
Compliance Equivalent Volume (Vas) 147 liters / 5.2 cu.ft.
Peak Diaphragm Displacement Volume (Vd) 255cc
Mechanical Compliance of Suspension (Cms) 0.38mm/N
BL Product (BL) 11.3 T-M
Diaphragm Mass Inc. Airload (MMs) 49 grams
Efficiency Bandwidth Product (EBP) 84
Maximum Linear Excursion (Xmax) 4.9mm
Surface Area of Cone (Sd) 519.5 cm2
Maximum Mechanical Limit (Xlim) 8.5mm

Recommended Enclosure Volume
Sealed 23-28 liters / 0.8-1 cu.ft.
Vented 33-85 liters / 1.2-3 cu.ft.
Driver Volume Displaced 86.4 / 1.42 liters
Overall Diameter 12.38″, 314.5mm
Baffle Hole Diameter 11.06″, 280.9mm
Front Sealing Gasket Fitted as standard
Rear Sealing Gasket Fitted as standard
Mounting Holes Diameter 0.28″, 7.1mm
Mounting Holes B.C.D. 11.62″, 295.1mm
Depth 6.06″, 154mm
Net Weight 5.1 lbs, 2.3 kg
Shipping Weight 6.8 lbs, 3.1 kgs

Coil Construction Aluminum voice coil
Coil Former Polyimide former
Magnet Composition Neodymium magnet
Core Details Vented core

Basket Materials Die-cast aluminum basket/ heatsink
Cone Composition Paper Cone
Cone Edge Composition Cloth cone edge
Dust Cap Composition Solid composition paper dust cap