Nominal Basket Diameter: 12", 304.8mm
Nominal Impedance*: 8 ohms
Usable Frequency Range: 70Hz-5.5kHz
Magnet Weight: 56 oz.
Gap Height: 0.312", 7.92mm
Voice Coil Diameter: 1.75", 44.5mm
THIELE & SMALL PARAMETERS
Resonant Frequency (fs): 89Hz:
DC Resistance (Re): 6.13
Coil Inductance (Le): 0.38mH
Mechanical Q (Qms): 11.48
Electromagnetic Q (Qes): 0.49
Total Q (Qts): 0.47
Compliance Equivalent Volume (Vas): 41.5 liters / 1.5 cu. ft.
Peak Diaphragm Displacement Volume (Vd): 42cc
Mechanical Compliance of Suspension (Cms): 0.11mm/N
BL Product (BL): 14.4 T-M
Diaphram Mass inc. Airload (Mms): 30 grams
Efficiency Bandwidth Product (EBP): 181
Maximum Linear Excursion (Xmax): 0.8mm
Surface Area of Cone (Sd): 519.5 cm2
Overall Diameter: 12.02", 305.3mm
Baffle Hole Diameter: 10.97", 278.6mm
Front Sealing Gasket: fitted as standard
Rear Sealing Gasket: fitted as standard
Mounting Holes Diameter: 0.25", 6.4mm
Mounting Holes B.C. D.: 11.63", 295.4mm
Depth: 5.2", 132mm
Net Weight: 10.8 lbs., 4.9 kg
Shipping Weight: 12.5 lbs., 5.7 kg
MATERIALS OF CONSTRUCTION
Coil Construction: Copper voice coil
Coil Former: Nomex former
Magnet Composition: Ferrite magnet
Core Details: Non-vented core
Basket Materials: Pressed steel basket
Cone Composition: Paper Cone
Cone Edge Composition: Paper cone edge
Dustcap Composition: Zurette dust cap
*: 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.