Klipsch PSM-800-SW black

The PSM-800-SW completes the Professional Surface Mount speaker range with a passive 20 cm subwoofer designed for indoor and outdoor installations. Certified EN54-24 for voice alarm and evacuation systems, it integrates into commercial sound systems where low-frequency reinforcement is lacking. Its native compatibility with 70V/100V lines and an unusual transformer-free design set it apart from typical professional subwoofers.

A rethought bass-reflex enclosure for low frequencies

The PSM-800-SW features a 20 cm driver housed in a bass-reflex enclosure with three folded Tractrix ports. This technology, called Tractrix Hyperfold Port, extends the port duct through a five-step fold, increasing airflow without enlarging the cabinet. The result is low-frequency extension down to 38 Hz (±4 dB), or even 30 Hz at 10 dB attenuation, while limiting the turbulence and port noise often audible on vented subwoofers.

On the power side, the PSM-800-SW handles 150 W continuous (AES standard) and 600 W peak. Maximum sound pressure level reaches 107 dB, with a sensitivity of 88 dB at 1 W/1 m. Nominal impedance is 8 ohms, with a minimum of 4.2 ohms at 36 Hz — a parameter to consider when selecting an amplifier.

A transformer-free architecture for constant-voltage lines

70V or 100V subwoofers traditionally use a transformer to match impedance. This component presents a problem: it limits low-frequency response by introducing a low-frequency cutoff. Klipsch opted for a transformer-free design that bypasses this limitation. The PSM-800-SW offers two power settings (70 W or 35 W) on 70V and 100V lines, as well as a bypass mode for direct 8-ohm operation.

Connection is made via a four-point Euroblock terminal block, faster to wire than conventional screw terminals. This connector also facilitates maintenance work on existing installations.

Weather resistance and on-site integration

The high-impact ABS cabinet withstands prolonged UV exposure and temperature variations. The IPX6 protection rating guarantees resistance to pressurized water jets, covering heavy rain, sea spray, or hose-down cleaning. The grille is screw-mounted to prevent accidental detachment — a welcome detail in public spaces or wind-exposed locations.

The cabinet’s matte finish is paintable, allowing the subwoofer to blend with its architectural surroundings. Its dimensions (394 × 305 × 236 mm) and weight of 7.15 kg make it manageable by a single person during installation. Depth increases to 282 mm with the mounting bracket.

EN54-24 certification and safety applications

EN54-24 certification opens up the use of the PSM-800-SW in voice alarm and fire evacuation systems. This European standard requires thermal resistance testing, speech intelligibility testing, and extended operation under degraded conditions. Public venues (hotels, shopping centers, train stations, airports) that must comply with these regulatory requirements can integrate this subwoofer into their safety sound system.

This certification complements the musical reinforcement function: the same subwoofer handles low-frequency reproduction during normal operation and remains operational for evacuation announcements in an emergency.

Compatibility with the PSM series

The PSM-800-SW shares the same design and finish as the PSM-450-T, PSM-525-T, PSM-650-T, and PSM-800-T full-range speakers. This visual consistency simplifies integration in projects where multiple coverage points coexist. The subwoofer’s frequency response (38–200 Hz) aligns with that of the series speakers, whose lower limit typically falls between 52 and 80 Hz depending on the model.

The five-year warranty covers the entire product, a duration consistent with the series’ professional positioning.

Technical Specifications

Audio Performance

• Frequency response: 38 Hz – 200 kHz (±4 dB), 30 Hz (-10 dB)
• Power handling (AES): 150 W (600 W peak)
• Maximum sound pressure level (SPL): 107 dB
• Sensitivity: 88 dB (1 W / 1 m)
• Nominal impedance: 8 ohms
  • Minimum: 4.2 ohms at 36 Hz

Driver and Acoustic Design

• Type: 20.32 cm (8”) passive subwoofer
• Transducer: 20.32 cm woofer (ref. 1072158)
• Acoustic loading: bass-reflex with 3 folded Tractrix ports
• Proprietary technology: Tractrix Hyperfold Port for extended bass response and reduced port noise

Construction and Integration

• Cabinet material: High-strength ABS, paintable finish
• Protection rating: IPX6 (water and weather resistant)
• Secured grille: screw-mount for secure installation in demanding environments
• Applications: indoor / outdoor commercial sound reinforcement

Connectivity and Installation

• Connector: 4-point Euroblock terminal block
• Constant voltage lines:
  • 70 V: 70 W / 35 W
  • 100 V: 70 W / 35 W
• Bypass mode: direct operation at 8 ohms
• Transformerless design: optimized low-frequency performance

Dimensions and Weight

• Width: 394 mm
• Height: 305 mm
• Depth: 236 mm
• Depth with bracket: 282 mm
• Weight: 7.15 kg

Compliance and Warranty

• Certification: EN54-24
• Warranty: 5 years