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.
Nominal Basket Diameter: 6.5", 165mm
Nominal Impedance*: 8 ohms
Music Program 200W
Usable Frequency Range: 95Hz - 6kHz
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
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
Pressed steel basket
Cone Composition Paper cone
Cone Edge Composition Cloth cone edge
Dust Cap Composition Solid composition 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.
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