PSB CS810 8" 2-Way In-Ceiling Flush Mount Speaker at Vinyl Sound Toronto Canada

The CS810 is a 2-way in-ceiling flush mount speaker from PSB Speakers (Lenbrook Industries, Ontario, Canada), available at Vinyl Sound in Toronto, Canada. Part of the PSB CustomSound CS800 architectural speaker series, the CS810 brings PSB's signature driver technology and NRC-validated acoustic design to a large-format 8" ceiling installation. It features a proprietary 8" carbon-filled polypropylene cone woofer with cast basket, a proprietary 1" titanium dome ferrofluid-cooled tweeter with waveguide, and a verified frequency response of 48Hz to 20,000Hz (±3dB). Engineered inside the anechoic chamber at Canada's National Research Council (NRC), the CS810 delivers the warm, balanced, and musically refined sound that PSB is known for in a discreet, nearly invisible in-ceiling package suited to stereo listening rooms, multi-room audio systems, and home theatre installations throughout the Greater Toronto Area.

PSB CustomSound Driver Technology in a Large-Format Enclosure

The CS810's 8" (203mm) woofer uses a carbon-filled polypropylene cone with a high-temperature voice coil and rigid cast basket, a construction that reduces cone breakup and delivers well-controlled bass extension down to 48Hz in an open-back ceiling installation. The proprietary 1" (25mm) titanium dome tweeter is ferrofluid-cooled for thermal stability under sustained high-power use, and features a precision waveguide that broadens the tweeter's usable bandwidth across the 3100Hz LR4 crossover transition. A ball-joint pivot mount assembly allows the tweeter to be aimed precisely toward the primary listening position using an indexed angle adjustment accessible after installation, ensuring on-axis high-frequency accuracy in rooms where the seating position is offset from the ceiling speaker location. The LR4 crossover design achieves clean Linkwitz-Riley phase coherence between woofer and tweeter, producing a flat summed acoustic response across the crossover region for smooth, uncolored sound throughout the listening area.

Tweeter Level Optimization and Foolproof Installation

The CS810 includes a dual-position tweeter level switch that allows the high-frequency output to be adjusted between 0dB and +3dB after installation. This single switch is located on the front baffle and enables installers to compensate for room acoustics: highly absorbent rooms with heavy furnishings and carpet may benefit from the +3dB setting, while live, reflective spaces will typically sound most balanced at 0dB. Spring-post terminals accept bare wire up to 12AWG, pin connectors, and single banana plugs, simplifying connection to in-wall speaker cable. The heavy-duty dogleg mounting system secures the CS810 firmly to ceilings between 3/8" and 1.25" thick using a foolproof cam-lock mechanism, and the speaker can be removed and re-installed without damage to the ceiling cutout. A cutting template is included in the box, and optional pre-construction brackets and a backcan (model BCN-800, sold separately) are available for new construction applications.

Key Features

• 8" Carbon-Filled Polypropylene Woofer: Proprietary PSB driver with cast basket and high-temperature voice coil, delivering controlled bass extension to 48Hz with warm, balanced character in open-back ceiling installations.
• 1" Titanium Dome Tweeter with Waveguide: Ferrofluid-cooled for thermal stability, with a precision waveguide for controlled dispersion and a ball-joint pivot for indexed tweeter aiming toward the primary listening position.
• 3100Hz LR4 Crossover Network: Linkwitz-Riley fourth-order design ensures phase-coherent integration between woofer and tweeter for smooth, flat acoustic response through the crossover region.
• Dual-Position Tweeter Level Switch: Single accessible switch adjusts tweeter output between 0dB and +3dB after installation, allowing tonal optimization to suit each room's acoustic character.
• Aimable Ball-Joint Tweeter Mount: Indexed pivot adjustment allows the tweeter to be directed precisely toward the seating area for enhanced imaging and on-axis high-frequency accuracy.
• Spring-Post Terminals: Accept bare wire up to 12AWG, pin connectors, and single banana plugs for secure and flexible in-wall wiring connection.
• Heavy-Duty Dogleg Mounting System: Cam-lock doglegs provide secure installation into finished ceilings and allow tool-accessible removal for future servicing or repositioning.
• Round and Square Magnetic Frameless Grilles Included: Both grille shapes are supplied; frameless magnetic attachment leaves no visible hardware, and grilles are paintable to match any ceiling color.
• NRC Anechoic Chamber Design: Engineered at Canada's National Research Council, reflecting over 45 years of PSB acoustic research and loudspeaker development.

Technical Specifications

What's in the Box

• PSB CS810 8" In-Ceiling Speaker (1 unit)
• Round Magnetic Frameless Grille
• Square Magnetic Frameless Grille
• Cutting Template
• Mounting Hardware

Frequently Asked Questions

What is the PSB CS810?

The PSB CS810 is a 2-way in-ceiling flush mount speaker featuring an 8" carbon-filled polypropylene woofer with cast basket, a 1" titanium dome ferrofluid-cooled tweeter with waveguide, and a frequency response of 48Hz to 20,000Hz (±3dB). It is the entry-level 8" model in PSB's CustomSound CS800 architectural series and is sold individually as a single unit.

What is the difference between the PSB CS810 and the PSB CS850?

The PSB CS850 is the premium flagship of the CS800 series, while the CS810 is the accessible entry point in the same 8" family. Both share the same cutout dimensions, mounting depth, and cabinet form factor, making them interchangeable in the ceiling. The CS850 uses Imagine T3-derived driver technology with a carbon-filled polypropylene cone and cast basket woofer alongside a ferrofluid-cooled titanium dome tweeter, and provides dual level switches for independent tweeter and midwoofer adjustment. The CS810 uses the same cast basket and titanium dome tweeter construction but at a lower driver specification tier, and includes a single tweeter level switch only. For primary stereo listening rooms or home theatre main channels, the CS850 is the stronger choice; the CS810 suits secondary rooms, whole-home audio zones, and budget-conscious installations where the 8" format is required.

How does the PSB CS810 compare to the Klipsch CDT-5800-C II or Polk Audio Reserve R900?

The PSB CS810, Klipsch CDT-5800-C II, and Polk Audio Reserve R900 are all 8" in-ceiling speakers targeting stereo and home theatre applications. The Klipsch CDT-5800-C II uses a tractrix horn tweeter optimized for high efficiency and cinema-style dynamics. The Polk Reserve R900 features Polk's X-Port bass extension technology and a 1" Terylene dome tweeter. The CS810 differentiates through its NRC-validated acoustic design, LR4 crossover network, and titanium dome tweeter with waveguide, which together produce a smooth, low-distortion wide-band response particularly well suited to music listening. For Toronto customers prioritizing accurate stereo performance in a large-format in-ceiling form, the CS810 is a refined and competitive choice in its class.

Can the PSB CS810 be used for Dolby Atmos height channels?

Yes, the CS810 is well suited for Dolby Atmos and DTS:X overhead height channel use in a home theatre system. Its 8" woofer provides ample dynamic output for cinematic overhead effects in large listening rooms, and the aimable titanium dome tweeter can be directed toward the primary seating area to improve overhead sound localization and height imaging.

What is an LR4 crossover and why does it matter in the CS810?

An LR4 crossover is a Linkwitz-Riley fourth-order filter that divides the audio signal between the woofer and tweeter at 3100Hz with near-perfect phase coherence at the crossover frequency and a flat summed acoustic response. In the CS810, this crossover design ensures that the 8" woofer and the 1" titanium dome tweeter combine accurately in the crossover region, preventing the coloration and lobing artifacts that simpler first- or second-order crossovers can introduce. The result is a smooth, neutral tonal character through the presence and brilliance region of the frequency range.

What amplifier power is recommended for the PSB CS810?

The CS810 accepts between 10 and 100 watts per channel into its 6-ohm nominal impedance (minimum 4 ohms). Its 85dB anechoic sensitivity (87dB in-room) means it reaches comfortable listening levels with modest amplifier power, making it fully compatible with home theatre receivers and multi-room amplifiers from brands such as NAD Electronics, Bluesound, Anthem, Denon, and Yamaha.

Where can I buy the PSB CS810 in Toronto or Canada?

The PSB CS810 is available at Vinyl Sound, an authorized PSB dealer in Toronto, Canada. Vinyl Sound carries the full PSB CustomSound architectural speaker range and provides expert guidance on speaker placement, amplifier pairing, multi-room audio design, and professional installation services for residential and custom integration projects throughout the Greater Toronto Area and across Canada.

Is the PSB CS810 sold as a pair or individually?

The CS810 is sold as an individual unit (each). Customers building a stereo in-ceiling installation will need to purchase two units. Both round and square magnetic frameless grilles are included with each speaker, so no additional grille purchase is required regardless of which shape best suits the ceiling design.