Klipsch SPL-150 15″ High-Performance Subwoofer – 400W RMS – Front-Firing Cerametallic Driver, Class D Amp

Klipsch SPL-150 15″ High-Performance Subwoofer – 400W RMS – Front-Firing Cerametallic Driver, Class D Amp – Command the Deepest Frequencies with the Klipsch SPL-150 Subwoofer

The Klipsch SPL-150 is an uncompromising 15-inch powered subwoofer engineered to deliver the most powerful, room-shaking bass in the SPL line. With a thunderous 400W RMS / 800W peak Class D amplifier, an ultra-rigid Cerametallic™ cone, and a carefully tuned front-firing slot port, the SPL-150 offers unmatched low-frequency impact and clarity, capable of hitting up to 122 dB SPL.

Whether you’re building a reference-level home theater or need concert-grade performance for your music setup, the SPL-150 is designed to pressurize large spaces with deep, dynamic bass. Every explosion, synth drop, and cinematic rumble will hit harder, cleaner, and deeper — exactly the way the artist or filmmaker intended.

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Key Features

• 15″ Front-Firing Cerametallic™ Woofer

• 400W RMS / 800W Peak Class D Amplifier

• 122 dB Max SPL Output

• Front Slot Port with Flare Geometry

• Low-Pass Crossover & Phase Control

• LFE & Line Level Inputs (RCA)

• WA-2 Wireless Ready

• Brushed Polymer Veneer Cabinet with Magnetic Grille

• Heavy MDF Construction for Reduced Resonance

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Massive 15” Cerametallic™ Woofer – Low-End Authority

At the heart of the SPL-150 is Klipsch’s largest and most powerful Cerametallic™ woofer — a 15-inch front-firing beast that dominates the room with low-end response while maintaining tight control. Cerametallic™ is known for its lightweight stiffness, which minimizes cone breakup and distortion, even at high volumes.

This massive driver can move large volumes of air with accuracy, delivering bass that’s not just loud, but deep, musical, and precise.

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High-Efficiency Class D Power – 800W Peak Performance

To drive such a large woofer effectively, the SPL-150 features a 400W continuous / 800W peak Class D amplifier. This powerhouse ensures clean headroom and fast transient response, letting the subwoofer handle even the most demanding content without bottoming out or overheating.

Despite its size and output, the Class D amplifier is highly efficient, keeping power consumption and heat under control — ideal for long movie nights or extended listening sessions.

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122 dB SPL – Earth-Shaking Sound Pressure

With a staggering 122 dB max SPL, the SPL-150 is capable of delivering the kind of bass you feel as much as hear. It’s perfect for large home theaters, open-plan living rooms, or dedicated listening spaces where standard subwoofers just can’t deliver enough energy.

From sci-fi booms to orchestral crescendos, the SPL-150 renders every moment with cinematic scale and visceral intensity.

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Front Slot Port – Deep Bass Without Chuffing

The SPL-150’s front-firing slot port with internal flare geometry is engineered for clean, efficient air movement. Unlike circular rear ports, the front slot port reduces turbulence, port noise, and placement limitations — making the subwoofer more flexible in your room.

It allows the SPL-150 to deliver extended low frequencies without distortion, even when placed near a wall or inside a media cabinet.

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Customizable Performance – Controls That Matter

Fine-tune your system with adjustable crossover, phase, and gain controls:

• Crossover (40Hz–160Hz): Seamlessly blends the subwoofer with your main speakers

• Phase (0° / 180°): Ensures time alignment for tighter bass

• Gain Control: Sets volume relative to your setup and room size

These controls allow the SPL-150 to adapt perfectly to any space or speaker configuration.

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Universal Compatibility – LFE & Line-Level RCA

The Klipsch SPL-150 includes both LFE (Low-Frequency Effects) and line-level RCA inputs, offering full compatibility with:

• AV receivers with subwoofer outs

• Stereo preamps

• Integrated amps

• Home theater processors

Whether you’re building a 2.1 music setup or a full 7.2.4 Dolby Atmos theater, the SPL-150 slots right in with ease.

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WA-2 Wireless Ready – Cleaner Setup, Full Control

For maximum flexibility, the SPL-150 is compatible with the optional Klipsch WA-2 Wireless Subwoofer Kit (sold separately). This allows you to place the subwoofer anywhere in the room — behind furniture, along a side wall, or even centered behind your seating — without long RCA cables running across the floor.

The WA-2 ensures low-latency, uncompressed signal transmission, preserving full audio quality while simplifying your layout.

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Premium Cabinet & Aesthetic Design

Despite its size and power, the SPL-150 remains visually elegant. The cabinet is constructed from heavy MDF with internal bracing to eliminate unwanted resonance, and finished in a scratch-resistant brushed black polymer veneer. The iconic copper Cerametallic woofer can be shown off or hidden behind the magnetic removable grille, depending on your taste.

Rubber feet keep the sub stable and isolated from floor vibrations, ensuring tight, punchy bass instead of boomy echoes.

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Ideal For:

• Large rooms or open-plan living spaces

• Reference-level home theaters

• Music lovers who want thunderous bass with clarity

• Gamers and cinephiles demanding immersive low-end impact

• Multi-subwoofer setups for smooth room response

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Technical Specifications

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Conclusion – The Ultimate Subwoofer for Power & Precision

The Klipsch SPL-150 is a subwoofer that doesn’t hold back. It’s built for enthusiasts who demand cinematic impact, musical precision, and headroom to spare. From jaw-dropping explosions to subtle basslines, the SPL-150 brings the low-end experience to life like few others can.

If your system is ready for reference-grade bass, the Klipsch SPL-150 is your final stop.

Explore the Klipsch Collection at Lux Audio