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

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

The HK Audio PR:O 15X is a 2-way passive enclosure designed to deliver high SPL and crystal-clear reproduction in a variety of applications: portable sound reinforcement, live music installations, stage monitoring, DJs, conferences and events. Its bass-reflex architecture combines a 15” woofer with a 1” driver coupled to a 60° × 40° constant directivity horn, delivering punchy low/midrange and controlled projection for vocals and instruments. The trapezoidal MDF enclosure allows for vertical or horizontal use ( 45° monitor angle) and the 3°/7° DuoTilt plinth makes it easy to direct the beam towards the audience without any additional accessories.

With a power handling of 400 W RMS (8 Ω) , sensitivity 104 dB (1 W/1 m) and max SPL 128 dB , the PR:O 15X covers small and medium-sized rooms with ease, and integrates naturally with the subwoofers of the Premium PR:O series, such as PR:O 18 S or PR:O 210 S . It incorporates a passive crossover at 2 kHz (12 dB/Oct) and dynamic protection for the HF driver , as well as two Speakon NL4 connectors for input and parallel pass-through. Finished in black acrylic enamel and metal grille with acoustic foam for a professional aesthetic and durability.

Main features

• 2-way passive full range system: 15” LF + 1” HF with 60° × 40° waveguide.
• 400 W RMS at 8 Ω ; 128 dB SPL max.; 104 dB sensitivity.
• Frequency response: 60 Hz – 19 kHz (±3 dB) / 53 Hz – 19 kHz (−10 dB) .
• Passive crossover at 2 kHz, 12 dB/Oct; dynamic treble protection .
• MDF enclosure with multi-angle trapezoidal design; vertical or horizontal use ( 45° monitor ).
• DuoTilt 3°/7° for fine adjustment of coverage when mast mounted.
• Connectivity: 2 × Speakon NL4 (IN/Thru in parallel).
• Hardware: 3 × M8 points , 2 integrated handles ; metal grille with acoustic foam.
• Dimensions: 47 × 61.5 × 44.5 cm ; weight 21.4 kg .

Product benefits

• True versatility: bi-functional format for main PA, satellite or stage monitor.
• Controlled coverage: 60° × 40° diffuser that concentrates energy where it is needed and reduces feedback.
• Quick and clean setup: DuoTilt allows beam steering without wedges or adapters; parallel Speakon connectors simplify wiring.
• PR:O subwoofer compatible: pair with PR:O 18 S or PR:O 210 S for extended bass extension.
• Tour Durability: MDF, acrylic paint, and foam grille protect the transducer and maintain a professional aesthetic.

Use cases

• Main reinforcement or side fill in small/medium rooms and multipurpose spaces.
• Stage monitor for vocals, keyboards, guitars and DJ playback.
• Temporary or permanent installations in cultural centers, rehearsal rooms, music bars, and school auditoriums.

Frequently Asked Questions

• Does it need external amplification? Yes, it's an 8 ohm passive enclosure. A power amp rated at 400 watts RMS with peak headroom is recommended.
• Can I use it as a monitor? Yes, its geometry allows for use at a 45° angle as a stage wedge.
• What's the difference with the PR:O 15 (without X)? The 15X adds a dual-purpose chassis with a monitor angle and shares passive electronics and 15"/1" transducers.

Description for projects

2-way full-range passive enclosure; 15” LF + 1” HF; 60° × 40° guide; 400 W RMS (8 Ω); 104 dB sensitivity (1 W/1 m); max. SPL 128 dB (@10 % THD); 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; DuoTilt 3°/7°; 3 × M8; 45° monitor use; MDF with acrylic enamel; metal grille with foam; 47 × 61.5 × 44.5 cm; 21.4 kg; black.