12 in. Neodymium Magnet 300 watts RMS

DELTALITE�-II 2512    

SPECIFICATION   

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*** 99.9

Magnet Weight 7 oz.

Gap Height 0.275", 7mm

Voice Coil Diameter 2.5", 63.5mm    

THIELE & SMALL PARAMETERS  

Resonant Frequency (fs) 37Hz

Download PDF Spec Sheet

Download PDF Cabinet Design

 

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

Diaphram 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        

MOUNTING INFORMATION    

Recommended Enclosure    

Sealed 23-28 liters/0.8-1cu.ft.  

Vented 33-85 liters/1.2-3cu.ft.  

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", 7mm  

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 kg        

MATERIALS OF CONSTRUCTION    

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  

Dustcap Composition Solid composition paper dust cap        

FOOTNOTES    

*	Please consult www.eminence.com for specifications of models with alternative impedances.
**	Multiple units exceed published rating evaluated under EIA 426A noise source and test standard while in a free-air, non-temperature controlled environment.
***	The average output across the usable frequency range when applying 1W/1M into the nominal impedance. Ie: 2.83V/8ohms, 4V/16ohms. Eminence response curves are measured under the following conditions: All speakers are tested at 1w/1m using a variety of test set-ups for the appropriate impedance | LMS using 0.25� supplied microphone (software calibrated) mounted 1m from wall/baffle | 2ft. X 2ft. baffle is built into the wall with the speaker mounted flush against a steel ring for minimum diffraction | Hafler P1500 Trans-Nova amplifier | 2700 cu.ft. chamber with fiberglass on all six surfaces (three with custom-made wedges).
****	BETA 8CX, 10CX, 12CX and ACOUSTINATOR� CX2008 are coaxial speakers with tweeter sold separately. Published Usable Frequency response contingent upon use of APT 50 HF Driver.