Overview

The Eminence ALPHA3-32 is a versatile and compact 3-inch full-range driver, ideal for tight-fitting pro audio line array and column array applications. This driver features a robust design with an 8.3 oz ferrite magnet combined with an internal neodymium bucking magnet to enhance sensitivity and extend the frequency response up to 20kHz. Its highly pressed cone, sandwiched with a layer of water-resistant polypropylene, ensures increased stiffness and lower distortion, making it a reliable choice for various audio setups.

Features:

• True full-range response with output up to 20,000 Hz
• 32 Ohm impedance, suitable for series-parallel wiring in multiple driver systems
• High sensitivity for efficient sound reproduction
• Poly-coated paper cone for smooth response and water resistance
• Ideal for portable speaker systems, column arrays, and line arrays

Specifications:

• Nominal Diameter: 3 inches
• Impedance: 32 Ohms
• Program Power: 70W
• RMS Power: 35W
• Frequency Response: 150 Hz - 20 kHz
• Sensitivity: 88.2 dB (2.83V/1m)
• Magnet Weight: 8.3 oz
• Voice Coil Diameter: 0.79 inches (20 mm)
• Resonant Frequency (Fs): 117 Hz
• DC Resistance (Re): 22.4 Ohms
• Mechanical Q (Qms): 5.87
• Electromagnetic Q (Qes): 0.85
• Total Q (Qts): 0.74
• Compliance Equivalent Volume (Vas): 0.04 ft³
• Mechanical Compliance of Suspension (Cms): 0.86 mm/N
• BL Product (BL): 6.46 T·m
• Diaphragm Mass Inc. Airload (Mms): 2 grams
• Maximum Linear Excursion (Xmax): 2.6 mm
• Surface Area of Cone (Sd): 28.6 cm²

Materials of Construction:

• Cone Material: Poly Composite
• Surround Material: Rubber
• Voice Coil Wire Material: Copper
• Voice Coil Former: Kapton® / Polyimide
• Basket/Frame Material: Steel
• Magnet Material: Ferrite

Mounting Information:

• Overall Diameter: 3.98 inches
• Baffle Cutout Diameter: 3.04 inches
• Depth: 1.76 inches
• Mounting Holes Diameter: 0.16 inches
• Mounting Holes B.C.D.: 3.63 inches