Q Acoustics Qi65SP ST

This in-ceiling speaker breaks with tradition by offering full stereo sound from a single point. Developed by Q Acoustics, this bold technical solution is designed for spaces where installing two separate speakers is complex or aesthetically problematic. With an installation depth of just 84 mm and a simplified mounting system, it makes high-quality stereo sound accessible in any home environment.

Perfect Design and Architectural Integration

The aesthetic philosophy of the Qi65SP ST is based on total invisibility once installed. Its 232 x 232 mm square grille blends seamlessly into any ceiling thanks to its paintable finish. The magnetic mounting system allows the grille to be removed and replaced without tools, making it easy to touch up paint or update your décor. This modular approach sets Q Acoustics apart from competitors who often use fixed grilles.

The British brand has paid particular attention to practicality by including a cutting template, eliminating guesswork during installation. The 203 mm cutout diameter is standard, ensuring compatibility with common cutting tools. This attention to practical details reflects Q Acoustics’ expertise in residential audio.

Revolutionary Single-Point Stereo Technology

The major innovation lies in the dual 25 mm tweeter configuration, which enables true stereo sound from a central position. This technical approach solves the dilemma of small rooms where installing two traditional speakers would create an acoustic imbalance. The two tweeters independently handle the left and right channels, preserving stereo separation while creating a wider optimal listening area.

The 165 mm woofer/midrange driver ensures sonic coherence by handling frequencies common to both channels. This hybrid architecture retains the benefits of traditional stereo while drastically simplifying installation. For purist audiophiles, this solution may seem like a compromise, but it excels in practical, everyday applications.

Balanced and Adjustable Acoustic Performance

With a frequency response of 70 Hz to 20 kHz, this speaker is positioned as a complete solution for home use. The bass extension down to 70 Hz (-3 dB) effectively covers the majority of music and movie content, though a subwoofer is still recommended for demanding listeners or larger rooms.

The rear-accessible tweeter level selector (-3 dB, 0 dB, +3 dB) allows you to tailor the tonal balance to your room’s acoustics. This flexibility, combined with the adjustable tweeter orientation, offers a rare level of customization in this product category. The 90 dB sensitivity and 8-ohm impedance ensure optimal compatibility with most home amplifiers.

Versatile Use and Environmental Adaptability

The Qi65SP ST excels in versatility, from casual music listening to elaborate home theater setups. Its UL94 fire rating and moisture resistance allow installation in any home environment, including bathrooms and kitchens. This environmental versatility greatly expands its range of applications compared to traditional speakers.

For home theater installations, a pair of Qi65SP ST speakers can serve as surround or Atmos channels, with their omnidirectional dispersion creating a natural sound field. In a simple stereo setup, a single unit is enough to effectively fill a medium-sized room, simplifying the audio chain and reducing installation costs.

Technical Specifications

Audio Performance

• Power handling: 80 watts RMS
• Impedance: 8 ohms
• Frequency response: 70 Hz (-3 dB) to 20 kHz
• Sensitivity: 90 dB
• Gold-plated terminals

Speakers

• 2-way configuration with two tweeters
• Woofer/midrange driver: 165 mm
• Tweeters: 2 x 25 mm

Installation

• Mounting depth: 84 mm
• Dimensions with grille: 232 x 232 mm
• Cutout diameter: 203 mm

General Information

• Type: 2-way in-wall speaker
• Weight: 2 kg per unit
• Fire safety: UL94 flame-retardant class