Eminence Alpha 3-32 American Standard

The "American Standard" Series: Eminence's Efficiency-Oriented Approach

With the Alpha 3-32, Eminence offers a small-diameter speaker from the American Standard series, a family designed to provide reliable and consistent solutions for speaker integration. This model emphasizes ease of implementation, performance stability, and manufacturing aimed at real-world use, whether for repair or custom system design.

Its 3-inch format and high impedance make it a unique choice in a range often dominated by 4, 8, or 16-ohm versions: the Alpha 3-32 clearly targets multi-driver configurations, mini satellites, or modules where multiple emission points are desired without complicating amplification.

Intended Uses for the Eminence Alpha 3-32

The Eminence Alpha 3-32 is aimed at designers, integrators, and DIY enthusiasts looking for a compact full-range speaker to enhance presence, intelligibility, and definition. Thanks to its declared usable frequency range up to 20 kHz, it can suit systems where the use of a tweeter is minimized or for nearfield sound solutions focused on mid-high frequencies.

Its nominal impedance of 32 ohms is particularly interesting if you plan to assemble multiple identical speakers: this allows optimizing series/parallel connections while maintaining an overall load compatible with the intended amplification. This is a typical advantage for compact multi-speaker columns, certain soundbars, or multi-point modules seeking even sound distribution.

Design, Materials, and Key Integration Points

This model combines a paper/poly sandwich cone with a poly surround, a choice appreciated for balancing lightness, mechanical strength, and consistent behavior in the midrange. The frame is made of stamped steel, while the ferrite magnet contributes to a proven construction, suitable for environments where robustness is paramount.

Cooling and Control: Vented Pole Piece with Flux Cap

The Alpha 3-32 features a vented pole piece with flux cap, designed to promote heat dissipation and improve operational stability. Coupled with a copper voice coil and a polyimide coil former, this assembly aims for good endurance during prolonged use while maintaining dynamic response.

Useful Parameters: Design Consistency and Tuning Ease

With a resonance frequency (fs) declared at 117 Hz and a usable frequency range indicated from 150 Hz to 20 kHz, this 3-inch driver is typically intended to work from the lower midrange upwards, depending on volume, enclosure type (sealed or vented), and sonic goals. The manufacturer also states that mounting in both sealed and vented enclosures is "acceptable," providing some flexibility during design.

Finally, its mounting data (diameters, drill holes, front/rear gaskets) facilitate clean integration into baffles and help ensure airtightness, an important factor when working with small volumes where even minor leaks can alter system behavior.

Technical specifications

Cabinet impedance (Ω)	32 Ω	Category	loudspeaker
Speaker diameter	3"	Chassis	steel
Sensitivity	88	Coil diameter	20 mm
Frequency response - start	150 Hz	Power output	35 W
Frequency response - end	20 kHz	Weight	0.41 kg

Model	Eminence Alpha 3-32	BL product (BL)	6.46 T.m
Manufacturer reference	U-ALPHA_3-32	Diaphragm mass incl. air load (MMs)	2 g
Series	American Standard	Mechanical compliance of suspension (Cms)	0.86 mm/N
Nominal diameter	3 inches (76 mm)	Maximum diaphragm displacement volume (Vd)	7.4 cc
Nominal impedance	32 ohms	Efficiency bandwidth product (EBP)	138
Nominal power	35 W	Maximum linear excursion (Xmax)	2.6 mm
Program power	70 W	Maximum mechanical limit (Xlim)	4 mm
Resonance	117 Hz	Diaphragm surface area (Sd)	28.6 cm²
Resonance frequency (fs)	117 Hz	Magnet weight	8 oz
Usable frequency range	150 Hz - 20 kHz	Magnet type	ferrite
DC resistance (Re)	22.43 ohms	Gap height	0.08 inches (2 mm)
Coil inductance (Le)	0.23 mH	Voice coil diameter	0.787 inches (20 mm)
Mechanical quality factor (Qms)	5.87	Voice coil material	copper
Electromagnetic quality factor (Qes)	0.85	Coil former	polyimide
Total quality factor (Qts)	0.74	Pole piece details	vented pole piece with flux cap
Equivalent compliance volume (Vas)	0.98 liters / 0.03 cu.ft.