Tangent Ampster BT II with Polk Audio Atrium SAT300 Outdoor Speakers + Subwoofer

Tangent  |  SKU: KB00012
£749.99 £899.99
Colour: Terracotta

Includes 1 Year Warranty + 60 Day Returns

Need Advice? Call 02393 190955

We’re more than just an online retailer. We’re passionate about audio and offering the best customer service in the industry.

Need some advice? Call our audio experts on 02393 190955, live chat or email us and we’ll help you make the best decision. Learn More

Spend £99 For Free Delivery

All orders to mainland UK over £99 are eligible for free standard delivery.

Need it fast? No problem, you’ll find express next day delivery rates available on most products. Learn More

Extended 60 Day Returns

We’re so confident that you’ll be happy with your purchase that we’ve extended our returns policy to 60 days. We call it the “Happy Sound Guarantee”.

If you’re not happy with your purchase for any reason simply send it back to us for a full refund. Learn More


Elevate your outdoor entertainment experience to new heights with the ultimate bundle that includes the Tangent Ampster BT II + Polk Audio Atrium SAT300 outdoor speaker system and an outdoor subwoofer for extra bass.

This powerful and high-quality speaker system now comes with an outdoor subwoofer to provide you with an even richer and deeper bass sound, making your outdoor music experience even more immersive.

Stream your favourite tunes wirelessly via Bluetooth and enjoy sound that fills any outdoor space with its discreet speakers that can be mounted on a wall, in a flower bed or hung from a pergola.

The easy-to-install design of this bundle allows you to effortlessly create an unforgettable outdoor sound experience that will keep your guests entertained for hours.

Whether it's a small garden BBQ or a louder outdoor party, this bundle will impress with its exceptional audio quality and rugged outdoor design.

These speakers and subwoofer are designed to withstand harsh outdoor conditions, ensuring that they can withstand extreme temperatures, rain, and even snow.

So you can enjoy your music year-round, no matter the weather.

Key Features

  • Zones
    Single Zone
  • Placement
    On Wall, Freestanding
  • Music Sources
  • Inputs
    3.5mm AUX, RCA, Optical
  • Outputs
    5V USB Charger, Subwoofer Out
  • Power Handling
    100 Ws
  • Driver Size
  • Max. Speakers
    Two Speakers
  • Warranty
    1 Year



    • Qty Included: 1
    • Height: 7" (17.78 cm)
    • Width: 5.5" (13.97 cm)
    • Depth: 8.4" (21.34 cm)
    • Weight: 3.25 lbs (1.47 kg)
    • Driver Enclosure Type: Mineral-filled polypropylene cabinet
    • Driver Complement: (1)  3.5" (8.89 cm) d (Round) Dynamic Balance driver with extended motor structure, composite cone and butyl rubber surround, Midrange (1)  0.75" (1.91 cm) d (Round) Dynamic Balance polyurethane tweeter with neodymium magnet - Tweeter
    • Total Frequency Response: 100 Hz → 22,000 Hz
    • Nominal Impedance: 8 ohms
    • Sensitivity (1 watt @ 1 meter): 83 dB
    • Lower and Upper -3dB Limits: 115 Hz → 20,000 Hz
    • Recommended Amplifier Power Per Channel: 10 watts → 100 watts
    • Mounting Type: Wall bracket
    • Mounting Type: Stake with security plate


    • Dimensions: 279 x 406mm
    • Mounting Options: Keyhole slots for lock down on a deck; security eyebolt for garden placement
    • Subwoofer Enclosure Type: acoustic suspension
    • Driver Complement Subwoofer Type: Long-throw Dynamic Balance composite cone driver with dual voice coils and butyl rubber surround
    • Electrical - Lower -3dB Limit: 50Hz
    • Electrical - Nominal Impedance: 8 ohms per voice coil ohms
    • Electrical - Recommended Amplifier Power: 10-200 watts per channel
    • Electrical - Total Frequency Response: 40Hz-200Hz
    • Electrical - Upper -3dB Limit: 110Hz kHz
    • Electrical Crossover - Subwoofer Crossover: 150Hz
    • Included Accessories: Comes with three feet of pre-installed CL3 Burial-rated Cable


    • Input: Bluetooth, 3.5 mm AUX (Mini Jack), Analog RCA, Optical Digital In
    • Output: Subwoofer Out, USB Charge, Speaker terminals (stereo)
    • Frequency: 20 - 20000 Hz
    • Impedance: 4 Ω
    • Remote Control: Yes
    • Power: 2 x 50 Watt
    • Standby: <1W (EUP 2013)
    • Power: 220 Vac ~ 50/60 Hz (EU), Internal
    • Weight: 1.72 / 2.20 kg
    • Product Dimensions: 195 x 194 x 70 mm
    • DAC: AK4388 192kHz 24-Bit 2ch

What's In The Box


    • 1 x Amplifier
    • 1 x Remote Control
    • 1 x Power Lead
    • 1 x Infrared Receiver Lead
    • 1 x User Manual
    • 20m x 2 Core Outdoor Speaker Cable


    • 1 x Ground Stake
    • 1 x Security Plate
    • 1 x Pendant Cap
    • 1 x Rubber Bumper
    • 1 x Eyebolt
    • 2 x Fasten Connectors
    • 1 x Registration Card
    • 1 x Mounting Template
    • 1 x #10 Pan Head Screw
    • 2 x #6 Pan Head Screws
    • 1 x Lock Washer
    • 2 x Wire Nuts
    • 1 x Owner's Manual

Payment & Security

Secure Payments

  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Maestro
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Authorised Dealer

K&B Audio are authorised dealers for Tangent. All sales come with a 1 Year manufacturers warranty and full technical support.

Tangent Ampster BT II with Polk Audio Atrium SAT300 Outdoor Speakers + Subwoofer - K&B Audio

Tangent Ampster BT II with Polk Audio Atrium SAT300 Outdoor Speakers + Subwoofer

£749.99 £899.99









Drive Type




Noise Cancelling



Single Zone

Music Sources



3.5mm AUX, RCA, Optical


5V USB Charger, Subwoofer Out

TV Connection


Smart Features


Cut-Out Diameter


Mounting Depth


Power Handling

100 Ws



Driver Size







1 Year
View Product