|Nominal Basket Diameter||12", 305mm|
|Nominal Impedance*||8 ohms|
|Usable Frequency Range||51Hz - 3.5kHz|
|Magnet Weight||11 oz.|
|Gap Height||0.36", 9.27mm|
|Voice Coil Diameter||3", 76.2mm|
|Thiele & Small Parameters|
|Resonant Frequency (fs)||51.5Hz|
|DC Resistance (Re)||5.5|
|Coil Inductance (Le)||0.57mH|
|Mechanical Q (Qms)||8.39|
|Electromagnetic Q (Qes)||0.33|
|Total Q (Qts)||0.32|
|Compliance Equivalent Volume (Vas)||81.1 liters / 2.86 cu.ft.|
|Peak Diaphragm Displacement Volume (Vd)||330cc|
|Mechanical Compliance of Suspension (Cms)||0.2mm/N|
|BL Product (BL)||15.9 T-M|
|Diaphragm Mass Inc. Airload (MMs)||46.9 grams|
|Efficiency Bandwidth Product (EBP)||157.4|
|Maximum Linear Excursion (Xmax)||6.2mm|
|Surface Area of Cone (Sd)||532.4 cm2|
|Maximum Mechanical Limit (Xlim)||12.5mm|
|Recommended Enclosure Volume|
|Sealed||28-76 liters / 1-2.7 cu.ft.|
|Vented||41-110 liters / 1.5-3.9 cu.ft.|
|Driver Volume Displaced||93.6 cu.in. / 1.53 liters|
|Overall Diameter||12.38", 314.45mm|
|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", 295.2mm|
|Net Weight||7.1 lbs, 3.22 kg|
|Shipping Weight||8.7 lbs, 3.95 kgs|
|Materials of Construction|
|Coil Construction||Aluminum voice coil|
|Coil Former||Kapton former|
|Magnet Composition||Neodymium magnet|
|Core Details||Vented core|
|Basket Materials||Die-cast aluminum basket|
|Cone Composition||Treated paper cone|
|Cone Edge Composition||Sealed cloth surround|
|Dust Cap Composition||Treated paper 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, nontemperature-controlled environment.
*** The average output across the usable frequency range when applying 1W/1m into the nominal impedance. ie: 2.83 V /8 ohms, 4 V /16 ohms. 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 | 2 ft. x 2 ft. 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™ CX 2008 are coaxial speakers with tweeter sold separately. Published Usable Frequency response contingent upon use of APT 50 HF Driver.
***** Multiple units exceeded published rating evaluated under AES 500 and AES 800 noise sources and test standards while mounted on Eminence's TI-2000 horn in a nontemperature-controlled environment.
****** The average on axis output across the entire usable frequency range when applying 1W/1m into the nominal impedance while mounted on a Community SH 494 horn measured with: LMS (software calibrated) using a 0.25" [6.4mm] supplied microphone mounted 1m from horn mouth, Hafler P1500 Trans-Nova amplifier, 2700 cu.ft. chamber w/fiberglass on all six surfaces (three with custom made wedges). Plane-wave tube response and impedance curves measured with LMS on a 0.75" [19.1mm] diameter tube with adapter to allow for smooth transition to throat diameter and 1W/1m into nominal impedance. Prices and Specifications Subject to Change Without Notice.