HK Audio PR:O 15 - 2-way passive full-range system (15”/1”) with 60° × 40° directivity

HK Audio PR:O 15 – 2-way passive full-range system (15”/1”) with 60° × 40° directivity

The HK Audio PR:O 15 is a 2-way passive enclosure designed to deliver punch and clarity to a variety of applications, including portable sound reinforcement, live music installations, DJ sets, conferences, and events. Its bass-reflex architecture combines a 15” woofer with a 1” driver coupled to a 60° x 40° waveguide, delivering controlled projection across the entire vocal and instrumental range. The MDF cabinet with a black acrylic enamel finish features a 3°/7° DuoTilt for pole-mounted beam steering, plus three M8 drop points and two handles for easy handling and installation.

With 400 W RMS at 8 Ω , a sensitivity of 104 dB (1 W/1 m) and a maximum peak SPL of 128 dB , the PR:O 15 performs reliably in small and medium-sized rooms and is acoustically adapted to work alongside subwoofers from the Premium PR:O series such as the PR:O 18 S or PR:O 210 S when greater low-frequency extension is required.

Main features

• 2-way passive full-range system: 1 × 15” LF + 1” HF on 60° × 40° constant directivity horn.
• Admissible power: 400 W RMS / 800 W program / 1,200 W peak (8 Ω).
• Sensitivity: 104 dB (1 W/1 m); Max. peak SPL: 128 dB (half-space, 10% THD).
• Frequency response: 60 Hz – 19 kHz (±3 dB) / 53 Hz – 19 kHz (−10 dB).
• Passive crossover: 2 kHz with 12 dB/Oct slopes and dynamic HF driver protection .
• DuoTilt 3°/7° for coverage angle adjustment when mounted on a mast.
• Connectivity: 2 × Speakon NL4 (input + output in parallel; 1+/1− assignment).
• MDF enclosure, steel grille with acoustic foam, black acrylic finish.
• Dimensions: 47.5 × 62 × 41.5 cm ; Weight: 22.5 kg.

Product benefits

• True versatility: works as a main box, a satellite in subwoofer systems, or as a reinforcement in fixed installations.
• Controlled Coverage: The 60° × 40° guide concentrates energy where it's needed and helps reduce feedback.
• Quick and tidy setup: DuoTilt makes orientation easy; parallel Speakon connectors simplify wiring.
• Durable Construction: MDF, acrylic paint, and foam grille protect transducers during intensive use.

Use cases

• Main reinforcement in bars, clubs, rooms and multipurpose spaces.
• Passive systems combined with PR:O 18 S or PR:O 210 S subwoofers for greater bass extension.
• Mobile and fixed installations in cultural centers, schools and auditoriums.

Frequently Asked Questions

• Does it need a power amp? Yes, it's an 8 Ω passive enclosure. A power amp rated at 400 W RMS per channel with peak headroom is recommended.
• What connectors does it use? Speakon NL4: 1 input and 1 output in parallel (1+/1−).
• Can it be tilted without wedges? Yes, thanks to the DuoTilt base with 3° or 7° tilts when mounted on a mast.

Description for projects

2-way passive enclosure; 15” LF + 1” HF; 60° × 40° directivity; 400 W RMS (800 W program / 1,200 W peak) at 8 Ω; 104 dB sensitivity (1 W/1 m); 128 dB peak max. SPL (half-space); 60 Hz–19 kHz response (±3 dB) / 53 Hz–19 kHz (−10 dB); 2 kHz passive crossover (12 dB/Oct) with HF dynamic protection; 2 × Speakon NL4 (IN/Thru, 1+/1−); 3°/7° DuoTilt plinth; 3 × M8 points; acrylic-enamelled MDF enclosure, foam-wrapped steel grille; dimensions 47.5 × 62 × 41.5 cm; weight 22.5 kg; black.