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.
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