Eminence DELTA-15A PA Speaker

15-Inch Professional PA Speaker Driver for Live Sound

The Eminence Delta 15A Pro is a 15-inch professional loudspeaker driver engineered for PA systems, stage monitors, and full-range reinforcement. Delivering 400 W RMS power handling and 101.6 dB sensitivity, this driver covers 54 Hz to 4,200 Hz in sealed or vented cabinets. Cloth-surrounded paper cone construction delivers natural tonal character, while the cast aluminum frame ensures structural rigidity under demanding live conditions.

Design Features That Set This Driver Apart

Fitted with an aluminum voice coil on a vented polyimide former, moving mass is minimized and thermal headroom maximized — a rare combination at this price point. Distortion at high excursion is lowered by the extended, vented pole piece, and rigidity is enhanced without extra weight due to the die-cast aluminum basket.

Power Handling and Sensitivity

With high sensitivity, the Delta 15A Pro achieves stage-level volumes from moderate amplifier power, proving efficient for smaller rigs and capable of handling serious wattage alike.

• RMS Power: 400 W — continuous output without thermal compression
• Music Program Rating: 800 W for peak headroom during dynamic transients
• Sensitivity: 101.6 dB (2.83 V/1 m)
• Standard PA amplifier compatibility is ensured by its 8 Ω impedance

Frequency Range and Thiele-Small Parameters

Enclosure builders can optimize tuning using these confirmed parameters for sealed or vented alignments.

• Usable Range: 54 Hz – 4,200 Hz — bass fundamentals through upper midrange
• Resonant Frequency (Fs): 42 Hz
• Total Q (Qts): 0.40, well-suited to both sealed and ported boxes
• Maximum Linear Excursion (Xmax): 4.3 mm

Build Materials and Mounting Dimensions

Professional-grade materials and precise mounting specs ensure reliable long-term operation and straightforward replacement in existing cabinets.

• Frame: Die-cast aluminum
• Cone: Paper with cloth surround and solid composition paper dust cap
• For the voice coil, a 64 mm aluminum on polyimide former design is used
• Net Weight: 7.71 kg
• Mounting Depth: 153.9 mm
• Baffle Cutout: 355.6 mm — 8-hole mounting pattern