Sonus faber Palladio PC-664P In-Ceiling Speaker

Point the Sound Where You Want It

The Sonus faber Palladio PC-664P brings a level of flexibility to architectural audio that you don't typically associate with an in-ceiling speaker.

This is a 3-way point-source in-ceiling loudspeaker featuring a 1.1-inch D.A.D. tweeter, 3.1-inch midrange and 6.5-inch woofer, with the drivers designed to angle toward the listening position.

That ability to direct the sound makes the PC-664P particularly useful when the ceiling isn't perfectly aligned with the seating area—or when you want more precise control over the acoustic presentation.

And like the rest of Palladio, it does all of this while remaining remarkably discreet.

Three-Way Performance From the Ceiling

The PC-664P uses three dedicated drivers:

1.1-inch D.A.D. Tweeter
Sonus faber's 29 mm D.A.D. tweeter handles the high frequencies with the company's characteristic attention to detail.

3.1-inch Midrange
The 80 mm midrange provides a dedicated driver for the critical vocal and instrumental range, helping maintain clarity and coherence through the middle octaves.

6.5-inch Woofer
The 165 mm woofer supplies the foundation and dynamics, giving the PC-664P considerably more capability than a typical compact architectural speaker.

The three drivers operate together as a genuine 3-way system, rather than asking a single coaxial driver to reproduce the entire frequency range.

Point-Source Sound You Can Aim

One of the defining features of the PC-664P is its sound-pointing capability.

The driver assembly can be angled so that the sound emission is directed toward the listening position.

That's particularly valuable in real-world rooms where the speaker locations are dictated by architecture, lighting, beams, furniture or other construction requirements rather than ideal speaker placement.

Instead of simply accepting whatever direction the ceiling gives you, the PC-664P lets the installer aim the acoustic output where it matters.

A Drone-Cone Passive-Radiator Enclosure

The PC-664P uses a drone-cone passive-radiator enclosure.

This allows Sonus faber to develop a more controlled low-frequency response within the constraints of an in-ceiling installation, while maintaining the discreet form factor expected from the Palladio Collection.

The result is an architectural speaker designed to deliver substantially more than background music.

Sonus faber Details You Can Actually See

Architectural speakers usually prioritize invisibility. Sonus faber takes a slightly different approach.

The PC-664P incorporates leather embellishment around both the tweeter and midrange, an aesthetic detail inspired by the company's Olympica Nova Collection.

It's a small detail, but it immediately separates the PC-664P from the anonymous white-ceiling-speaker category.

For installations where the speaker remains visible, those details matter. And when you do want the speaker to disappear, the magnetic edgeless grille can be painted to blend with the ceiling.

Magnetic, Edgeless Grille

The PC-664P comes with a magnetic, edgeless metal grille designed to keep the installation clean and unobtrusive.

The square grille can be easily removed and painted to match the surrounding ceiling.

That gives the installer two very different visual options:

Without Grille — showcase the Sonus faber driver array and leather detailing.

With Grille — create an understated architectural installation that blends into the room.

The grille attaches magnetically, so there are no visible mechanical fasteners interrupting the finished appearance.

Designed for Real-World Installation

The PC-664P is designed specifically for ceiling installation when a speaker cannot be placed on a wall.

A swing-out dogs fixing system allows the speaker to be secured quickly and effectively into plasterboard.

Its dimensions are:

411 × 411 mm / 16.2 × 16.2 inches

with a:

388 × 388 mm / 15.2 × 15.2-inch cutout

and 220 mm / 8.6 inches of required depth behind the surface.

The speaker protrudes just 9 mm / 0.35 inches from the finished surface.

Built for Serious Systems

The PC-664P is specified for 40–200 watts of amplifier power, giving it the flexibility to work within a wide range of high-performance architectural systems.

That makes it suitable for applications ranging from high-end distributed audio to dedicated immersive home theater systems.

With its pointable driver array, the PC-664P is especially useful when precise speaker placement and aiming are important.

Palladio Collection

The PC-664P belongs to Sonus faber's Palladio Collection, the company's range of custom-installation in-ceiling and in-wall loudspeakers.

Palladio takes its design inspiration from Italian Renaissance architecture, emphasizing balance and symmetry while bringing Sonus faber's approach to Natural Sound into architectural spaces.

The goal isn't simply to make a speaker disappear.

It's to create an architectural loudspeaker that still feels like a Sonus faber.

Key Features

• Palladio Collection
• 3-way point-source in-ceiling system
• Pointable/angled driver array
• Drone-cone passive-radiator enclosure
• 29 mm / 1.1-inch D.A.D. tweeter
• 80 mm / 3.1-inch midrange
• 165 mm / 6.5-inch woofer
• Leather embellishment around tweeter and midrange
• Magnetic, edgeless square metal grille
• Paintable grille
• Swing-out dogs fixing system
• Designed for plasterboard installation
• 40–200 W recommended amplifier power
• 411 × 411 mm / 16.2 × 16.2-inch outer frame
• 388 × 388 mm / 15.2 × 15.2-inch cutout
• 220 mm / 8.6-inch installation depth
• Only 9 mm / 0.35-inch protrusion

Technical Specifications

Specification	Sonus faber Palladio PC-664P
Type	3-way point-source in-ceiling system
Acoustic Design	Drone-cone passive-radiator enclosure
Tweeter	29 mm / 1.1" D.A.D. driver
Midrange	80 mm / 3.1"
Woofer	165 mm / 6.5"
Recommended Amplifier Power	40–200 W
Outer Frame	411 × 411 mm / 16.2 × 16.2"
Cutout	388 × 388 mm / 15.2 × 15.2"
Depth Behind Surface	220 mm / 8.6"
Protrusion	9 mm / 0.35"
Grille	Magnetic, edgeless square metal
Mounting	Swing-out dogs fixing system
Installation	In-ceiling

Specifications verified against Sonus faber's official PC-664P product information.

Sonus faber Palladio PC-664P at The Grid HiFi

The Palladio PC-664P is designed for installations where an in-ceiling speaker needs to do more than simply disappear.

Its three-way architecture, pointable driver array, passive-radiator enclosure and distinctive Sonus faber detailing make it a serious architectural loudspeaker for high-performance music and home theater systems.

Experience Sonus faber Palladio at The Grid HiFi in Houston.