Klipsch PSM-450-T black

Restaurant terraces, hotel patios, poolside areas, reception spaces: the acoustic and environmental constraints of these locations require robust speakers with no compromise on sound. The PSM-450-T brings to professional installations the technologies Klipsch has developed since 1946 for its hi-fi speakers, with a wall-mounted format suited to confined spaces and IPX6-certified weather resistance.

A folded port for lower frequency extension

The main challenge for a compact speaker is bass extension. To virtually lengthen the port without increasing the cabinet volume, Klipsch developed the Tractrix Hyperfold Port: a folded port in five segments that extends the effective acoustic length far beyond what a straight tube would allow in the same footprint. This design reduces air turbulence at high levels, those unwanted wind noises (sometimes called “chuffing”) that reveal undersized ports. The PSM-450-T reaches down to 60 Hz (±4 dB), or even 50 Hz with 10 dB attenuation, which remains notable for a 114 mm woofer.

A compression driver for the highs

The tweeter uses a 25 mm titanium diaphragm mounted on a compression driver, coupled to the K-1500M horn with Tractrix geometry. This type of loading, which Klipsch has used since 1989 in its hi-fi ranges, focuses sound energy toward the listening area while limiting unwanted reflections from surrounding walls. The stated coverage is 90° horizontally and ±40° vertically, with a directivity index of 7 dB (±3 dB) between 800 Hz and 20 kHz. This controlled directivity makes it possible to cover a terrace without spilling over into neighboring areas or saturating the ceiling of a canopy.

The crossover frequency between the bass and treble is set at 2 kHz. This choice places the transition in a range where both transducers behave linearly, avoiding coloration linked to a crossover too close to the bandwidth limits of either one.

A construction designed for outdoor use

The painted ABS cabinet resists UV exposure and temperature variations. The corrosion-resistant treated aluminum grille can be repainted to blend into a wall or facade; security screws prevent accidental or malicious removal. The IPX6 rating certifies resistance to powerful water jets, which easily covers driving rain, salty sea spray, or hose cleaning.

The supplied “C”-shaped wall bracket allows the speaker to be positioned vertically or horizontally, and to angle the sound toward the desired listening area. The mounting system remains discreet once the speaker is installed.

Integrated transformer for 100 V and 70 V lines

Distributed sound systems often use high-voltage lines (70 V in the United States, 100 V in Europe and Asia) to power many speakers over long distances without excessive losses. The PSM-450-T integrates a multi-tap transformer accessible in the connection compartment. Available settings are 15 W, 7.5 W, 3.8 W, and 1.9 W at 70 V, or 15 W, 7.5 W, and 3.8 W at 100 V. A bypass position allows the transformer to be bypassed and the speaker to be used in low impedance (8 ohms), with a power handling of 50 W RMS and peaks up to 200 W.

Connection is made via a four-pin Euroblock terminal (Phoenix connector), which accepts cables up to 2.5 mm² (14 AWG). This type of connection, faster than a traditional screw terminal block, makes on-site work easier.

Where this speaker fits in

The PSM-450-T is the most compact model in the PSM series, which also includes 133 mm (5.25”), 165 mm (6.5”), and 203 mm (8”) versions. Its format suits spaces where visual bulk must remain limited: shop facades, pergolas, hotel corridors, gyms, locker rooms. The maximum sound pressure of 102 dB and the sensitivity of 88 dB are sufficient for background music and announcements, but an installation requiring sustained output over a large area will benefit from adding a subwoofer or choosing a larger-diameter model in the range.

Indoors, the IPX6 protection rating has no direct use, but the ABS cabinet and aluminum grille remain relevant in humid environments: commercial kitchens, spas, indoor pools.

Technical Specifications

Audio Performance

• Frequency Response: 60 Hz – 20 kHz (±4 dB) / 50 Hz (-10 dB)
• Power Handling (AES): 50 W
  • Peak Power: 200 W
• Maximum Sound Pressure Level (SPL): 102 dB
• Sensitivity: 88 dB

Drivers and Acoustic Design

• Woofer: 114 mm (4.5”)
• Tweeter: 25 mm (1”) titanium compression with K-1500M horn
• Crossover Frequency: 2 kHz
• Integrated Technologies
  • Tractrix Horn
  • Tractrix Hyperfold port for bass extension and turbulence reduction

Directivity and Coverage

• Coverage: 90° (H) x ±40° (V)
• Directivity Index (DI): 7 dB ±3 dB (800 Hz – 20 kHz)

Connectivity and Installation

• Connector: 4-pin Euroblock terminal block
• Line Systems
  • 70 V: 15 W, 7.5 W, 3.8 W, 1.9 W
  • 100 V: 15 W, 7.5 W, 3.8 W
• Bypass Mode: 8 ohms
• Mounting: wall bracket included, screw-secured grille

Construction and Durability

• Material: Painted ABS, durable and discreet
• Protection Rating: IPX6 (rain and water spray resistant)

Dimensions and Weight

• Dimensions (with bracket): 309 x 242 x 166 mm
• Weight: 3.29 kg