This is a fantastic 5.1 home theatre and music streaming system. Easily expandable to a 9.4 system. 

This package contains: 

• 1 x Marantz Cinema 50 AV receiver 
• 1 x pair of MartinLogan Motion Foundation F1 tower speakers 
• 1 x pair of MartinLogan Motion Foundation B1 bookshelf speakers 
• 1 x MartinLogan Motion Foundation C1 centre speaker
• 1 x MartinLogan Dynamo Foundation 12 subwoofer

More about this system 

AV receiver: 

The Cinema 50 is a full featured high performing AV receiver perfect for the media room as a base to build a 9.4 home theatre system. 

• 9 powered channels
• Power Output (8 ohm, 20 Hz - 20 kHz, 0.08% 2ch Drive) 110 W
• Amplifier Topology Class A/B
• 6 x HDMI ( 8K) 
• HDCP2.3 support
• ARC, eARC
• Audyssey room correction 
• AirPlay 2
• Spotify Connect
• Amazon Music HD/ Amazon Music / TIDAL / Deezer / iHeart Radio / Napster / SoundCloud / Mood Mix

Speakers: 

Offering a tighter footprint than the larger Foundation F2, the Foundation F1 is ideal for those with smaller spaces. The star of the show is the Gen2 Obsidian Folded Motion Tweeter S working in tandem with the Folded Motion Waveguide for shocking levels of clarity, detail, and immersion. Filling out the sound are custom 5.5” aluminum drivers that combine high strength and low mass for impressive speed and detail. Foundation F1 is a great choice for high performance in modestly sized rooms.

• Frequency Response 41 Hz - 23 kHz ± 3 dB
• Tweeter Dispersion (horizontal x vertical) 90° x 90°
• Recommended Amplifier Power 15 - 200 watts
• Sensitivity 92 dB
• Impedance 4 ohms
• High Frequency Driver 0.94” x 1” (2.4 x 2.5cm) Gen2 Folded Motion® Tweeter S with 3.5 in2 (22.6 cm2) diaphragm.
• Crossover Frequency 240Hz, 2,700Hz (3-way)
• Mid-Frequency Drivers 5.5” (14cm) aluminum cone with cast aluminum basket. Non-resonant sealed chamber format. Unibody cone construction.
• Low Frequency Driver 3 x 5.5” (14cm) aluminum cones with cast aluminum baskets. Non-resonant asymmetrical chamber format. Unibody cone construction.
• Cabinet Rear Ported
• Binding Post Inputs 5-way Binding Posts (Non Bi-Wire)

Sub: 

With its larger 12” woofer and more powerful amplifier, Dynamo™ Foundation® 12 offers even more output and low frequency extension than its smaller sibling the Dynamo Foundation 10. Thanks to its enhanced capabilities, the Dynamo Foundation 12 is the ideal choice for those with larger rooms or anyone desiring high output, and low distortion bass from a décor friendly design. With its powerful 12” woofer, strong amplification, and precise DSP Engine encased in a solid yet sleek cabinet, the Dynamo Foundation 12 is perfectly suited to keep up with the speed of MartinLogan loudspeakers and ready to deliver in any system.