Eminence ALPHA 6A 6” Replacement Speaker Recommended for professional audio mid-range applications in a sealed cabinet, or as a mid-bass in a vented satellite enclosure. SPECIFICATION: Nominal Basket Diameter: 6.5", 165mm Nominal Impedance*: 8 ohms Power Rating** Watts 100W Music Program 200W Resonance 118Hz Usable Frequency Range: 95Hz - 6kHz Sensitivity*** 93.6dB Magnet Weight: 20 oz. Gap Height: 0.25", 6.35mm Voice Coil Diameter: 1.5", 38.1mm THIELE & SMALL PARAMETERS Resonant Frequency (fs): 118Hz DC Resistance (Re): 7.2 Coil Inductance (Le): 0.19mH Mechanical Q (Qms): 5.68 Electromagnetic Q (Qes): 0.6 Total Q (Qts): 0.54 Compliance Equivalent Volume (Vas): 5.8 liters / 0.2 cu.ft. Peak Diaphragm Displacement Volume (Vd): 44cc Mechanical Compliance of Suspension (Cms): 0.26mm/N BL Product (BL): 8 T-M Diaphragm Mass Inc. Airload (MMs): 7 grams Efficiency Bandwidth Product (EBP): 197 Maximum Linear Excursion (Xmax): 3.5mm Surface Area of Cone (Sd): 126.7 cm2 Maximum Mechanical Limit (Xlim): 4mm MOUNTING INFORMATION Recommended Enclosure Volume Sealed 2.8-5.7 liters / 0.1-0.2 cu.ft. Vented 3.4-15.6 liters / 0.12-0.55 cu.ft. Driver Volume Displaced 25 cu.in. / 0.41 liters Overall Diameter 6.59", 167.4mm Baffle Hole Diameter 5.65", 143.5mm Front Sealing Gasket Fitted as standard Rear Sealing Gasket Fitted as standard Mounting Holes Diameter 0.23", 5.7mm Mounting Holes B.C.D. 6.06", 154mm Depth 2.8", 71mm Net Weight 4.1 lbs, 1.9 kg Shipping Weight 4.8 lbs, 2.2 kgs MATERIALS OF CONSTRUCTION Coil Construction Copper voice coil Coil Former Polyimide former Magnet Composition Ferrite magnet Core Details Vented and extended core Basket Materials Pressed steel basket Cone Composition Paper cone Cone Edge Composition Cloth cone edge Dust Cap 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, 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.
