Page 1
American Standard series
ALPHA 4
Perfectly suited for line array, car doors or side panels,
and other tight fitting applications, the Alpha 4 is a very
versatile 110 watt driver that can be used full range,
as a midbass, or as a midrange. They can be stacked
by themselves in a column for vocal applications, or in
conjunction with a tweeter and a sub for compact, high
performance PA or MI applications.
•
110 w Program Power
•
4” Nominal Diameter
•
8 Ω
4
4
encloSure
Sealed Box
Vented Box
Scoop Loading
Horn Loading
application
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
Non-Vented core
Pressed steel basket
Paper cone
Cloth cone edge
Solid composition paper dust cap
4
4
4”, 102 mm
105 Hz – 12 kHz
0.14”, 3.7 mm
1”, 25 mm
8 Ω
110 W
55 W
123 Hz
88 dB
10 oz.
tHiele & SMall paraMeterS
Fs
Re
Le
Qms
Qes
Qts
Vas
Vd
Cms
BL
Mms
EBP
Xmax
Sd
Xlim
0.07 cu.ft., 1.94 liters
freQuencY reSponSe & iMpedance curve
dBSPL
95
90
85
80
0.42 mm/N
57.7 cm2
*
123 Hz
6.73 Ω
0.28 mH
6.83
0.84
0.75
15 cc
4.94 T-M
4 grams
146
2.6 mm
4.5 mm
MountinG inforMation
Recommended Enclosure Volume
Sealed
Vented
Driver Volume Displaced
Overall Diameter
Baffle Hole Diameter
Front Sealing Gasket
Rear Sealing Gasket
Mounting Holes Diameter
Mounting Holes B.C.D.
Depth
Net Weight
Shipping Weight
1.84–4.53 liters,
0.07–0.16 cu.ft.
3.96–7.08 liters,
0.14–0.25 cu.ft.
0.012 cu.ft., 0.33 liters
4.57’’, 116.1 mm
3.77’’, 95.8 mm
Yes
Yes
0.15’’, 3.8 mm
4.25’’, 108 mm
2.31”, 58.7 mm
1.5 lbs , 0.68 kg
1.9 lbs , 0.86 kg
Ohm
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
Page 2
footnotes
impedance
Please consult www.eminence.com for specifications of models with alternative
impedances.
power rating
Multiple units exceed published ratings evaluated under EIA 426A specification while
tested in a free-air, non-temperature-controlled environment. Multiple compression
drivers exceeded published ratings evaluated under EIA-426A or AES specification while
mounted on Eminence’s H290, H290S, or H2EA horn in a non-temperature-controlled
environment.
SenSitivity
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 | Yamaha P3500S
amplifier | 2700 cu. ft. chamber with fiberglass on all six surfaces (three with custom-
made wedges). Compression drivers were tested using a 2ft x 2ft baffle built into the wall
with horn front mounted.
coaxialS
BETA 8CX, 10CX, and 12CX are coaxial speakers with tweeter sold separately. Published
usable frequency response contingent upon use of ASD:1001 HF Driver.
Prices, product cosmetics and specifications are subject to change without notice.
eminence speaker llc
838 Mulberry Pike, Eminence, KY 40019
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