Eminence Alpha 3 A User guide

American Standard series

ALPHA 3-8

The Eminence Alpha 3-8 is a truly versatile compact full­range driver perfectly suited for tight fitting pro audio line
array and column array applications. With a program power
rating of 60 watts, this 3” driver utilizes an 8.3 oz ferrite
magnet in conjunction with an internal neodymium bucking
magnet for increased sensitivity and extends the response
out to 20kHz. The highly pressed cone sandwiches paper
with a layer of water-resistant polypropylene for increased
stiffness and lower distortion.

•

60 W Program Power

•

3.0” Nominal Diameter

•

8 Ω

ENCLOSUREAPPLICATION

4

4

Sealed Box

Vented Box

Scoop Loading

Horn Loading

Full Range

Midrange

Midbass

Woofer

Subwoofer

Bass Guitar

SPECIFICATION

Nominal Basket Diameter

Nominal Impedance*

Power Rating*

Program Power

Nominal Power

Resonance

Usable Frequency Range

Sensitivity*

Magnet Weight

Gap Height

Voice Coil Diameter

MATERIALS OF CONSTRUCTION

Copper voice coil

Polyimide former

Ferrite magnet

Vented / Flux source cap

Pressed steel basket

Paper/Poly sandwich cone

Poly cone edge

Poly dust cap

4

4

3.0”, 76 mm

118 Hz

150 Hz – 20.0 kHz

88.6 dB

0.10”, 2.5 mm

0.787”, 20 mm

THIELE & SMALL PARAMETERS

Fs

Re

Le

Qms

Qes

8 Ω

Qts

Vas

60 W

Vd

30 W

Cms

BL

Mms

EBP

8 oz.

Xmax

Sd

Xlim

FREQUENCY RESPONSE & IMPEDANCE CURVE

dBSPL

95

90

85

80

118 Hz

5.12 Ω

0.11 mH

7.94

0.53

0.50

0.03 cu.ft., 0.95 liters

6.9 cc

0.84 mm/N

3.93 T-M

2 grams

220

2.40 mm

28.6 cm2

4.0 mm

*

MOUNTING INFORMATION

Recommended Enclosure Volume

Sealed

Vented

Driver Volume Displaced

Major Diameter

Flat to Flat Diameter

Baffle Hole Diameter

Front Sealing Gasket

Rear Sealing Gasket

Mounting Holes Diameter

Mounting Holes B.C.D.

Depth

Net Weight

Shipping Weight

0.85–1.42 liters,

0.03–0.05 cu.ft.

1.42–1.98 liters,

0.05–0.07 cu.ft.

0.005 cu.ft., 0.13 liters

3.98’’, 101.1 mm

3.24”, 82.3 mm

3.04’’, 77.2 mm

Yes

Yes

0.16’’, 4.1 mm

3.63’’, 92.1 mm

1.76”, 44.6 mm

0.90 lbs , 0.41 kg

1.10 lbs , 0.50 kg

Ohm

80

70

60

50

40

30

75

70

65

60

55

20 Hz 50 100 200 500 1K 2K 5K 10K 20K

Visit eminence.com to find a dealer near you.

* See footnotes on page 2 for information regarding usable frequency range,
nominal impedance, power rating and sensitivity.

20

10

9

8

7

6

5

From design and manufacturing to the stage or studio. Once you’ve
experienced the performance of Eminence, you’ll never accept
anything else.

mission statement

footnotes

Eminence is dedicated to providing the best Quality, Value and Service
to meet our customers’ needs.

* Please consult www.eminence.com for specifications of models with alternative

impedances.

** Multiple units exceed published ratings evaluated under EIA 426A specification while

tested in a free-air, non-temperature-controlled environment.

*** The average output across the usable frequency range when applying 1W/1m into the

nominal impedance. i.e: 2.83V/8Ω, 4V/16Ω. 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 | Carver PM-120
amplifier | 2700 cu. ft. chamber with fiberglass on all six surfaces (three with custom­made wedges).

**** BETA 8CX, 10CX, and 12CX are coaxial speakers with tweeter sold separately. Published

usable frequency response contingent upon use of ASD:1001 HF Driver.

***** Multiple units exceeded published ratings evaluated under EIA-426A or AES specification

while mounted on Eminence’s H290, H290S, or H2EA horn in a non-temperature­controlled environment.

******The average on axis output across the entire usable frequency range when applying

1W/1m into the nominal impedance, i.e. 2.83V/8Ω, 4V/16Ω. 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 | 2ft x 2ft baffle is built
into the wall with horn front mounted | Carver PM-120 amplifier | 2700 cu.ft. chamber
with fiberglass on all six surfaces (three with custom-made wedges).

Prices, specifications and product cosmetics are subject to change without notice.

eminence speaker llc

838 Mulberry Pike, Eminence, KY 40019

Follow us: