PSB CS630 6.5" 2-Way Stereo/Surround In-Ceiling Speaker at Vinyl Sound Toronto Canada

The CS630 is a 2-way stereo and surround in-ceiling flush mount speaker from PSB Speakers (Lenbrook Industries, Ontario, Canada), available at Vinyl Sound in Toronto, Canada. A uniquely versatile model in the PSB CustomSound CS600 architectural series, the CS630 houses two complete audio channels in a single ceiling cutout through its proprietary 6.5" dual voice coil carbon-filled polypropylene woofer and a pair of 3/4" aluminium dome tweeters with waveguides. With a verified frequency response of 50Hz to 20,000Hz (±3dB), the CS630 delivers genuine two-channel stereo from one ceiling opening, making it the ideal solution for bathrooms, hallways, kitchens, and secondary rooms where separate left and right speakers are impractical. Designed and voiced at Canada's National Research Council (NRC) anechoic chamber, it can also be deployed as a bipole, dipole, or 7.1 surround rear channel speaker in a home theatre system.

Dual Voice Coil Architecture: Two Channels, One Opening

The CS630's defining technology is its dual voice coil woofer, a design that provides two electrically independent audio channels within a single 6.5" (165mm) driver. Each voice coil handles one channel of a stereo pair, eliminating the need for a second ceiling cutout in spaces where the room width, joist spacing, or aesthetic constraints make a traditional two-speaker installation impractical. The woofer uses the same carbon-filled polypropylene cone with rubber surround found in the CS610, mounted on a rigid basket with a high-temperature voice coil for reliable power handling. Above the crossover point, two 3/4" (19mm) aluminium dome tweeters, each with its own precision waveguide, deliver the high-frequency portion of each channel. The tweeter array is concentrically mounted and rotatable after installation, allowing the left and right high-frequency axes to be oriented for the best stereo coverage across the listening area. A 2100Hz LR4 crossover network manages the transition between woofer and tweeters in each channel with Linkwitz-Riley phase coherence.

Bipole, Dipole, and Surround Configuration Flexibility

Because the CS630 presents two discrete audio channels at its gold-plated spring-loaded binding posts, its wiring configuration determines its acoustic behavior. Wired in phase (bipole), both tweeters radiate coherently and reinforce each other, increasing output and coverage uniformity across the room. Wired out of phase (dipole), the two channels partially cancel on-axis and radiate more energy to the sides, creating the diffuse, enveloping surround effect recommended by THX and Dolby for side surround channels in a 5.1 or 7.1 home theatre. The CS630 can also serve as a dedicated surround rear speaker in a 7.1 configuration, handling two discrete rear channels from a single ceiling location. Independent dual-position level switches for both the tweeter array and woofer allow 0dB or +3dB adjustment after installation for room-to-room tonal optimization. The nominal impedance of 10 ohms (minimum 4 ohms per channel) is fully compatible with standard home theatre receivers and stereo amplifiers.

Key Features

• 6.5" Dual Voice Coil Woofer: Two independent audio channels in a single 6.5" carbon-filled polypropylene driver with rubber surround, enabling true stereo from one ceiling cutout in compact or constrained spaces.
• Dual 3/4" Aluminium Dome Tweeters with Waveguides: Two concentrically mounted aluminium dome tweeters, each paired with a precision waveguide, deliver clear, extended high-frequency output for both channels.
• Rotatable Tweeter Array: The dual tweeter assembly can be rotated after installation to orient the left and right high-frequency axes for optimal stereo coverage across the listening room.
• 2100Hz LR4 Crossover Network: Linkwitz-Riley fourth-order crossover design provides phase-coherent integration between the woofer and tweeters in each channel for smooth, accurate wide-band response.
• Bipole, Dipole, or Surround Rear Configuration: The two discrete channels support in-phase (bipole), out-of-phase (dipole), or dedicated 7.1 rear surround wiring, making the CS630 an exceptionally versatile architectural speaker.
• Dual-Position Level Switches: Independent tweeter array and woofer output adjustment (0dB / +3dB) accessible on the front baffle after installation for room-specific tonal tuning.
• Gold-Plated Spring-Loaded Binding Posts: Accept bare wire, pin connectors, and single banana plugs for secure and corrosion-resistant connection to in-wall speaker cable.
• Heavy-Duty Dogleg Mounting System: Secure installation into finished ceilings with a foolproof dogleg clamping mechanism and tool-accessible removal for future servicing.
• Round and Square Magnetic Frameless Grilles Included: Both grille shapes are supplied with each speaker; grilles are paintable to match any ceiling decor and attach magnetically with no visible hardware.
• 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 CS630 6.5" Stereo/Surround In-Ceiling Speaker (1 unit)
• Round Magnetic Frameless Grille
• Square Magnetic Frameless Grille
• Cutting Template
• Mounting Hardware

Frequently Asked Questions

What is the PSB CS630?

The PSB CS630 is a 2-way stereo and surround in-ceiling flush mount speaker featuring a 6.5" dual voice coil carbon-filled polypropylene woofer, two 3/4" aluminium dome tweeters with waveguides, and a frequency response of 50Hz to 20,000Hz. It delivers two independent audio channels from a single ceiling cutout and supports stereo, bipole, dipole, and 7.1 surround rear wiring configurations. It is sold individually as a single unit.

How does the PSB CS630 compare to the Polk Audio VS90RT or Klipsch CDT-5650-C II?

The PSB CS630 occupies a distinct category as a single-enclosure stereo speaker, making it a more precise competitor to products like the Polk Audio VS90RT, which also uses a dual voice coil design for two-channel stereo in one opening. The Klipsch CDT-5650-C II is a standard single-channel in-ceiling speaker and does not offer the CS630's stereo-from-one-cutout capability. Where the CS630 differentiates itself is in its NRC-validated acoustic design, rotatable dual tweeter array with waveguides, and the flexibility to wire as bipole or dipole for surround use, none of which the CDT-5650-C II provides. For Toronto homeowners needing stereo coverage in a bathroom, hallway, or kitchen without a second ceiling cutout, the CS630 has no direct equivalent in the PSB lineup.

Can the PSB CS630 be used as a Dolby Atmos or surround speaker in a home theatre?

Yes, the CS630 is well suited for surround channel use in a home theatre system. Wired out of phase as a dipole, it produces the diffuse surround presentation recommended by THX and Dolby for side surround channels in a 5.1 system. It can also handle two discrete rear channels in a 7.1 configuration from a single ceiling location, reducing the number of ceiling penetrations required in rooms where joist spacing limits speaker placement options.

What is a dual voice coil woofer and how does it work in the CS630?

A dual voice coil woofer contains two separate coil windings on a single driver cone, each connected to an independent audio channel. In the CS630, the left channel signal drives one voice coil and the right channel signal drives the other, with both coils sharing the same cone and moving together. The low-frequency output from both channels is therefore blended acoustically by the shared cone, while the high frequencies remain separated and handled by the two individual aluminium dome tweeters above the 2100Hz crossover point.

What is the difference between bipole and dipole wiring for the CS630?

Wired in phase (bipole), both of the CS630's channels radiate sound in the same acoustic polarity, reinforcing each other and producing higher overall output with broad, even coverage. Wired out of phase (dipole), the two channels partially cancel at the primary listening position and push energy to the sides, creating a diffuse, enveloping surround field. Dipole wiring is the standard approach for side surround speakers in Dolby and THX home theatre systems, while bipole wiring suits stereo music listening in rooms like kitchens or bathrooms.

What amplifier or receiver is recommended for the PSB CS630?

The CS630's nominal impedance of 10 ohms (minimum 8 ohms) makes it an easy, safe load for virtually any home theatre receiver or stereo integrated amplifier. Its recommended power range of 10 to 100 watts per channel means it works equally well with compact amplifiers used in multi-room audio systems from brands such as NAD Electronics or Bluesound as with full-size home theatre receivers from Denon, Yamaha, or Anthem.

Where can I buy the PSB CS630 in Toronto or Canada?

The PSB CS630 is available at Vinyl Sound, an authorized PSB dealer in Toronto, Canada. Vinyl Sound carries the full PSB CustomSound CS600 architectural speaker range and provides expert guidance on stereo system design, home theatre surround configurations, multi-room audio planning, and professional installation services for residential projects throughout the Greater Toronto Area and across Canada.

Is the PSB CS630 sold as a pair or individually?

The CS630 is sold as an individual unit (each). Because each CS630 delivers two-channel stereo from a single ceiling cutout, one unit is sufficient to provide stereo coverage in a compact space such as a bathroom or hallway. For wider rooms requiring broader stereo coverage, or for bipole/dipole surround applications, two units may be used. Both round and square magnetic frameless grilles are included with each speaker.