HK Audio PR:O 210 SUB - 2 × 10” Passive Subwoofer with Filtered Satellite Output

HK Audio PR:O 210 Sub (PR:O 210 S) – 2 × 10” Passive Subwoofer with Filtered Satellite Output

The HK Audio PR:O 210 Sub (named for the passive version PR:O 210 S ) is a compact bass-reflex subwoofer with two 10" woofers that delivers punch, speed and surprising depth for its size. Designed to pair with the full-range enclosures of the Premium PR:O series, it delivers 500W RMS at 4 Ω , a maximum peak SPL of 126 dB and a fine-tuned response for live music, DJs, rentals and mobile installations.

It features an NL4 Speakon input and a “Satellite Out” output (also Speakon) with a passive filter at 150 Hz (12 dB/Oct) , simplifying the creation of 2.1 systems with a single power supply per channel. Its acrylic-enamelled MDF cabinet and foam-lined steel grille ensure durability, while two M20 flanges allow for mast-mounting of satellites. Weighing just 26 kg and measuring 36 × 61 × 53 cm , it is easy to transport and place on stages and in venues.

Main features

• Passive bass-reflex subwoofer with 2 × 10” drivers for fast, defined bass.
• Power: 500 W RMS / 1,000 W program / 1,500 W peak (4 Ω).
• Max peak SPL: 126 dB; sensitivity: 101 dB (1 W/1 m, half-space).
• Frequency response: 60–150 Hz (−6 dB) / 40–150 Hz (−10 dB).
• Connectivity: 1 × Speakon NL4 Input (1+/1−) and 1 × Speakon NL4 Satellite Out with HPF 150 Hz (12 dB/Oct) .
• Direct integration with PR:O tops: Pairs with PR:O 8/10X/12/15/15X for 2.1 systems without external processing.
• Fittings: 2 × M20 mast sockets, 2 integrated handles.
• Construction: MDF enclosure with black acrylic enamel (Jet Black RAL 9005); steel grille with acoustic foam.
• Dimensions and weight: 36 × 61 × 53 cm; 26 kg .

Product benefits

• Easy setup: Filtered Satellite Out facilitates clean and quick wiring with passive top boxes.
• Bass that fits: 40–150 Hz range with a good “kick” for bands and DJs, while maintaining a compact size.
• Professional mounting: double M20 flange to fit one or two satellites depending on the configuration.
• Touring durability: materials and finishes withstand frequent loading/unloading.

Use cases

• Passive 2.1 systems in small and medium-sized venues (bars, clubs, cultural centers).
• Bass reinforcement for bands and DJs in portable sound and rental.
• Fixed installations where compactness and ease of operation are prioritized.

Compatibility and recommendations

• Requires external power amplifier (4 Ω channel; recommended power around 500–800 W RMS).
• The Satellite Out applies a 150Hz high-pass to the top box; for distinct cuts, use an external processor.
• Compatible with M20 threaded masts and PR:O tops (e.g. PR:O 12 / 15 / 15X, etc.).

Frequently Asked Questions

• Is it active or passive? Passive . It doesn't incorporate amplification or gain/phase controls; those belong to the PR:O 210 Sub A/Sub D2 (active).
• Does it have two Speakon connectors? Yes: one input and one Satellite Out filtered at 150 Hz for the top.
• Can I mount two satellites? Yes, thanks to the two M20 sockets on the top.

Description for projects

2 × 10” bass-reflex passive subwoofer; 500 W RMS power (1,000 W program / 1,500 W peak) at 4 Ω; max. peak SPL 126 dB; sensitivity 101 dB (1 W/1 m, half-space); response 60–150 Hz (−6 dB) / 40–150 Hz (−10 dB); internal filter: HP 12 dB/Oct (satellite) + LP 12 dB/Oct (sub), frequency 150 Hz; connectors 1 × NL4 IN (1+/1−) + 1 × NL4 Satellite Out; fittings 2 × M20 and 2 handles; MDF enclosure with acrylic enamel, steel grille with foam; dimensions 36 × 61 × 53 cm; weight 26 kg; color black.