Marantz MODEL M4 & 8 x BluCube BCK65 6.5" Ceiling Speaker Package
DETAILS
High-Performance Multi-Room Audio with Marantz MODEL M4 & BluCube BCK65 6.5" Ceiling Speakers.
This complete audio package pairs the Marantz MODEL M4 distribution amplifier with eight BluCube BCK65 6.5" in-ceiling speakers, delivering a flexible four-zone solution for residential installations, custom AV setups, and multi-room audio systems.

Designed for seamless integration, it brings powerful, high-resolution Marantz sound to multiple rooms with ease.
The Marantz MODEL M4 offers 8 x 100W amplification (into 8 ohms) across four zones, with Bridge Mode enabling up to 4 x 200W for more demanding setups. HEOS® Built-in provides streaming from services such as TIDAL, Amazon Music HD, and Spotify, either to individual zones or grouped for whole-home playback. Connectivity includes four RCA stereo inputs, two optical inputs, four USB-A ports, pre-outs, subwoofer outputs per zone, and Ethernet networking. High and low-pass filters, Marantz Musical Digital Filtering (MMDF), and TV Sound Grouping ensure optimal audio performance and integration.

The BluCube BCK65 speakers feature a 6.5" woven Kevlar bass/midrange driver and a titanium dome tweeter with 30-degree tilt and full rotation swivel for precise positioning. Built-in 6dB attenuation switches and a 4Ω/8Ω impedance selector allow fine-tuning to suit any room. Their low-profile, magnetically attached rimless grilles provide a modern, discreet look, while high-quality components and durable construction ensure long-term performance.
Please note: speaker cable is not included in this package but will be available as a recommended add-on under “Frequently Bought Together” on the product page.

Marantz MODEL M4 / BluCube BCK65 Package Key Features:
- Complete Multi-Room Package: Marantz MODEL M4 amplifier with 8 x BluCube BCK65 ceiling speakers.
- Powerful Amplification: 8 x 100W (8Ω) across four zones, Bridge Mode up to 4 x 200W.
- HEOS® Built-in: Stream to each zone independently or group zones for whole-home playback.
- Flexible Connectivity: 4 x RCA inputs, 2 x optical inputs, 4 x USB-A ports, pre-outs, subwoofer outputs, Ethernet.
- Premium Speakers: 6.5" woven Kevlar driver with titanium dome tweeter for detailed, balanced audio.
- Customisable Audio: 6dB attenuation switches and 4Ω/8Ω impedance selector for flexible setup.
- Tweeter Positioning: 30-degree tilt and full rotation swivel for precise sound dispersion.
- Stylish Installation: Low-profile, magnetically attached rimless grille.
- High-Resolution Sound: High-quality crossover network ensures seamless frequency blending.
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Warranty: 5-year manufacturers warranty for peace of mind.
SPECS & DOWNLOADS
Marantz MODEL M4 Specifications:
Download the Spec Sheet HERE >
- Amplifier Output (8Ω): 8 x 100W (20Hz–20kHz, 0.05% THD)
- Amplifier Output (4Ω): 8 x 125W (1kHz, 0.1% THD)
- Frequency Response: 20Hz – 20kHz (±1dB)
- Speaker Impedance: 4 – 16Ω
- Inputs: 4 x Stereo RCA, 2 x Optical (TOSLINK)
- Outputs: 4 x Stereo Pre-Outs, 4 x Subwoofer Outs (Selectable)
- Streaming: HEOS®, AirPlay 2, Spotify Connect
- Audio Formats: WAV, ALAC, FLAC (24-bit/192kHz), DSD (2.8/5.6 MHz), MP3, AAC, WMA
- Sound Modes: Stereo, Direct, Virtual, Dialog Enhancer, Night Mode
- Control: HEOS® app (iOS, Android), TCP/IP (Crestron, Control4, AMX)
- Trigger Outputs: 12V (4)
- Networking: Dual Ethernet ports
- Dimensions (W x D x H): 415 x 442 x 106 mm
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Colour: Black
BluCube BCK65 Specifications:
- Woofer: 6.5″ woven Kevlar, 1″ voice coil, 22 oz magnet, bumped back plate, vented pole piece
- Tweeter: 1″ titanium dome, ferro-fluid cooled, 30° swivel and pivot, neodymium magnet
- Crossover: FR4 board with 18dB per octave network, +/- 3dB attenuation switches on woofer & tweeter, 4ohm/8ohm switchable on PCB, Polyimide switch-auto protect reset switch, 14AWG connection to woofer section. Gold Plated terminals will accept 14AWG wire
- Frequency Response: 45Hz-22KHz
- Sensitivity: 88dB at 1W/1 M
- Recommended Amplifier Power: 10-125 watts
- Impedance: 4ohm/8ohm selectable on PCB
- Cut-out size: 202 mm (7.95″)
- Depth: 101mm (4″)

