- Nominal Basket Diameter: 12 inches, 304.8mm
- Nominal Impedance*: 8 ohms
- Watts: 75W
- Resonance: 89Hz
- Usable Frequency Range: 70Hz-5.5kHz
- Sensitivity***: 103
- Magnet Weight: 56 ounces
- Gap Height: 0.312 inches, 7.92mm
- Voice Coil Diameter: 1.75 inches, 44.5mm
Thiele & Small Parameters
- 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 cubic feet
- 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
Mounting Information
- Recommended Enclosure: Sealed or Vented Acceptable
- Overall Diameter: 12.02 inches, 305.3mm
- Baffle Hole Diameter: 10.97 inches, 278.6mm
- Front Sealing Gasket: fitted as standard
- Rear Sealing Gasket: fitted as standard
- Mounting Holes Diameter: 0.25 inches, 6.4mm
- Mounting Holes B.C. D.: 11.63 inches, 295.4mm
- Depth: 5.2 inches, 132mm
- Net Weight: 10.8 pounds, 4.9 kg
- Shipping Weight: 12.5 pounds, 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
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 inch 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.