Polk Audio MXT Series 5.1 Home Theater System with Denon AVR-S670H
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Premium 5.1 Home Theater System
Experience exceptional home cinema performance with this complete 5.1 channel surround sound system. Combining Polk Audio's acclaimed MXT (Monitor XT) series speakers with the advanced Denon AVR-S670H receiver, this bundle delivers immersive, high-fidelity audio for movies, music, gaming, and streaming.
What's Included:
- Denon AVR-S670H 5.2 Channel 8K AV Receiver with HEOS - 75W per channel, 8K/60Hz and 4K/120Hz video, Dolby Atmos, DTS:X, HEOS multi-room streaming
- Polk Audio MXT60 Floorstanding Speakers (Pair) - Front left/right tower speakers with dual 6.5" Dynamically Balanced drivers
- Polk Audio MXT15 Bookshelf Speakers (Pair) - Compact yet powerful surround speakers for immersive rear channel effects
- Polk Audio MXT30C Centre Speaker - Dedicated center channel with dual 5.25" drivers for crystal-clear dialogue
- Polk Audio MXT12SUB Powered Subwoofer - 12" down-firing subwoofer with 200W amplifier for deep, impactful bass
Key Features:
- True 5.1 channel surround sound with dedicated powered subwoofer
- Polk's patented Dynamically Balanced drivers for natural, distortion-free sound
- Hi-Res Audio certified components for superior music reproduction
- 8K/60Hz and 4K/120Hz HDMI video pass-through with HDR10+, Dolby Vision, and HLG
- Dolby Atmos and DTS:X immersive audio support
- HEOS Built-in for wireless multi-room audio streaming
- Voice control via Amazon Alexa, Google Assistant, and Apple Siri
- AirPlay 2, Spotify Connect, and Bluetooth streaming
- Audyssey MultEQ room calibration for optimized acoustics
- Premium Klippel-optimized bass reflex design
- Timbre-matched speakers for seamless soundstage integration
Technical Specifications:
| Denon AVR-S670H AV Receiver | |
|---|---|
| Power Output | 75W per channel (8 ohms, 20Hz-20kHz, 0.08% THD, 2ch driven) |
| Channels | 5.2 channel configuration |
| HDMI | 6 in / 1 out (eARC), 8K/60Hz, 4K/120Hz, HDCP 2.3 |
| Video Support | 8K/60Hz, 4K/120Hz, HDR10+, Dolby Vision, HLG, Dynamic HDR |
| Audio Formats | Dolby Atmos, DTS:X, Dolby TrueHD, DTS-HD Master Audio |
| Streaming | HEOS Built-in, AirPlay 2, Bluetooth, Spotify Connect |
| Room Calibration | Audyssey MultEQ (microphone included) |
| Voice Control | Amazon Alexa, Google Assistant, Apple Siri |
| Dimensions (W×H×D) | 434 × 151 × 339mm |
| Weight | 7.6kg |
| Polk Audio MXT60 Floorstanding Speakers (Pair) | |
| Driver Configuration | 1" (25mm) Terylene dome tweeter, dual 6.5" (165mm) Dynamically Balanced woofers |
| Frequency Response | 40Hz - 40kHz (-3dB) |
| Sensitivity | 89dB @ 1W/1m |
| Impedance | 8 ohms compatible |
| Recommended Amplification | 50-200W |
| Crossover Frequency | 2.5kHz |
| Finish | Black Walnut |
| Dimensions (H×W×D) | 1003 × 203 × 279mm each |
| Weight | 11.8kg each |
| Polk Audio MXT15 Bookshelf Speakers (Pair) | |
| Driver Configuration | 1" (25mm) Terylene dome tweeter, 5.25" (133mm) Dynamically Balanced woofer |
| Frequency Response | 48Hz - 40kHz (-3dB) |
| Sensitivity | 88dB @ 1W/1m |
| Impedance | 8 ohms compatible |
| Recommended Amplification | 40-150W |
| Crossover Frequency | 2.8kHz |
| Finish | Black Walnut |
| Dimensions (H×W×D) | 343 × 184 × 254mm each |
| Weight | 4.5kg each |
| Polk Audio MXT30C Centre Speaker | |
| Driver Configuration | 1" (25mm) Terylene dome tweeter, dual 5.25" (133mm) Dynamically Balanced woofers |
| Frequency Response | 48Hz - 40kHz (-3dB) |
| Sensitivity | 89dB @ 1W/1m |
| Impedance | 8 ohms compatible |
| Recommended Amplification | 40-150W |
| Crossover Frequency | 2.8kHz |
| Finish | Black Walnut |
| Dimensions (W×H×D) | 508 × 184 × 254mm |
| Weight | 6.4kg |
| Polk Audio MXT12SUB Powered Subwoofer | |
| Driver | 12" (305mm) down-firing Dynamically Balanced woofer |
| Amplifier Power | 200W continuous (400W peak) |
| Frequency Response | 22Hz - 270Hz (-3dB) |
| Controls | Volume, low-pass filter (50-200Hz), phase switch (0°/180°) |
| Inputs | LFE (RCA), line-level stereo (RCA) |
| Finish | Black |
| Dimensions (H×W×D) | 406 × 368 × 419mm |
| Weight | 15.4kg |
Ideal Room Size:
This system is perfectly suited for medium to large rooms (20-35m²). The MXT60 towers deliver full-range front soundstage with Hi-Res Audio certification, while the MXT15 surrounds create an enveloping rear sound field. The MXT30C center ensures dialogue clarity, and the MXT12SUB adds powerful, room-filling bass down to 22Hz.
What's in the Box:
- 1× Denon AVR-S670H receiver with remote control and batteries
- 2× Polk Audio MXT60 tower speakers (black walnut finish)
- 2× Polk Audio MXT15 bookshelf speakers (black walnut finish)
- 1× Polk Audio MXT30C center speaker (black walnut finish)
- 1× Polk Audio MXT12SUB powered subwoofer (black)
- Audyssey MultEQ calibration microphone with stand
- FM antenna
- Power cables
- Quick start guides and documentation
Setup Notes:
Speaker wire is not included. We recommend 14-16 gauge speaker cable for optimal performance. The MXT15 surrounds include keyhole slots for wall mounting (brackets sold separately). A single subwoofer cable (RCA) is required to connect the MXT12SUB to the receiver's LFE output. The system supports adding a second subwoofer for enhanced bass in larger rooms.
Hi-Res Audio Certified:
The MXT series speakers are Hi-Res Audio certified, capable of reproducing frequencies up to 40kHz for exceptional detail and clarity with high-resolution music sources. Combined with the Denon AVR-S670H's advanced 32-bit DACs and HEOS streaming, this system delivers audiophile-grade music performance alongside thrilling home theater dynamics.
Caring for your Speakers and Amplifiers
To Keep your equipment safe these are some best practices to note. Please be advised that this is only to reduce the risk of misuse and is not an exhaustive list.
Speakers
- Speaker terminals are marked red and black, ensure your amplifier to the speakers are wired on the same colours
- Ensure no loose speaker wire from the red touches a loose wire from the black as this will lead to a short circuit and damage either the speaker, the amplifier or both.
- Not all speakers are designed to play at max volume, kindly consider the pairing of your amplifier and speakers
- Speaker cabinets cannot be replaced please handle with care.
AV & Stereo Amplifiers
- If your amplifier has HDMI ports, ensure all devices are off before plugging in the HDMI cable
- Turn off the amplifier before swoping out or adding speaker cable
- Amplifiers generate heat, place them in a well ventilated space. if possible avoid having anything on top of the unit.
- adding a surge protector can assist with power dips which are likely to damage your devices. Isotek and Furman are industry standard.
- Dusty environments can sometimes lead to accumulation of dust in the electronic components that might affect heat regulation
Shipping & Returns
- Free shipping on orders over R500 within the country.
- Standard delivery within 2–5 business days. Delays will be communicated. This might vary slightly depending on your location.
- Return items in original condition for a full refund. (unopened state)
- Returns that are open/unboxed will be subject to a handling fee. Refunds will only be processed after testing the unit.