Eminence DELTA-12LFC User Manual
Specication
Nominal Basket Diameter
Nominal Impedance*
Power Rating**
Watts
Music Program
Resonance
Usable Frequency Range***
Sensitivity
Magnet Weight
Gap Height
Voice Coil Diameter
Thiele & Small Parameters
Resonant Frequency (fs)
DC Resistance (Re)
Coil Inductance (Le)
Mechanical Q (Qms)
Electromagnetic Q (Qes)
Total Q (Qts)
Compliance Equivalent Volume (Vas)
Peak Diaphragm Displacement Volume (Vd)
Mechanical Compliance of Suspension (Cms)
BL Product (BL)
Diaphragm Mass inc. Airload (Mms)
Efciency Bandwidth Product (EBP)
Maximum Linear Excursion (Xmax)
Surface Area of Cone (Sd)
Maximum Mechanical Limit (Xlim)
12”, 304.8mm
4 ohms
500W
1000W
52Hz
45Hz-2.3kHz
93.1
56 oz.
0.375”, 9.53mm
2.5”, 63.5mm
52Hz
3.2
.94mH
8.21
.47
.44
63.7 liters / 2.3 cu.ft.
249cc
0.17mm/N
10.9 T-M
53 grams
111.4
4.8mm
519.5 cm2
13.5mm
The Art and Science of Sound
DELTA-12LFC Neodymium Series
Recommended for professional audio mid-bass or oor monitor applications in a sealed enclosure. Also suitable
as a woofer in vented, bass guitar or PA enclosures.
Mounting Information
Recommended Enclosure Volume
Sealed
Vented
Driver Volume Displaced
Overall Diameter
Bafe Hole Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Mounting Holes B.C.D.
Depth
Net Weight
Shipping Weight
28-110 liters/1.0-3.9 cu.ft.
Materials of Construction
Copper voice coil
Kapton
Ferrite magnet
Vented and extended core
Pressed steel basket
Treated Paper Cone
Cloth cone edge
Solid composition paper dust cap
21-74 liters/0.7-2.6 cu.ft.
137.3 cu.in. / 2.25 liters
12.03”, 305.5mm
10.95”, 278.1mm
Fitted as standard
Fitted as standard
0.25”, 6.4mm
11.59”, 294.4mm
5.88”, 149.35mm
11.8 lbs., 5.4 kg
14 lbs., 6.4 kg
Please inquire about 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/bafe | 2ft. X 2ft. bafe is built into the wall with the speaker mounted ush against a steel ring for minimum diffraction | Haer P1500 Trans-Nova amplier | 2700 cu.ft. chamber with
berglass on all six surfaces (three with custom-made wedges)
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