- New Generation
Highlights
Why we love this product
The new plug & play CONCEPT series houses a perfectly matched AV receiver inside a subwoofer. This means space saving and big, impressive sound for games, movies, and music. Perfect for TVs or computers.
Key advantages at a glance
- Plug & play 2.1 complete system for games, movies, and music
- Innovative overarching acoustic concept engineered in Berlin for refined cinematic tuning
- CONCEPT 12 Subwoofer with 300-mm bass driver that delivers punchy tones down to 22 Hz and high volume levels in spaces up to 35 m²
- Integrated AV receiver with Bluetooth 5.0 Qualcomm® aptX™ and AAC as well as HDMI (ARC, CEC) and Dynamore® Technology
- For the ultimate in sound in this class: the popular ULTIMA 20 bookshelf speakers with 2-way system, phase plug, and wave guide
- Can be placed on TV stand, wall mounts, or floor stand (AC 7001 SP 2)
- 5.1 USB-C sound card, automatic wake from standby, a wide array of audio settings, comes with 25 m speaker cable and remote control
Features
All technologies at a glance
Engineered in Berlin
Our laboratories and anechoic chambers are still where we engineered the current ULTIMA Mk4 Series. We gave the design a facelift and made it look a little nicer – it is now more timeless and modern than ever. We also incorporated tons of customer feedback.
Value you can feel
The front, which now features a very purist design, has also hidden the cover mounts better. The covers themselves look more elegant and feel similar to a high-quality textile, which makes them easier to fit into any living room.
Subwoofer and AV receiver in one
The CONCEPT 8 subwoofer is a high-performance 5.1 multichannel subwoofer with built-in AV receiver. The perfect integration and matching of the internal amplifiers to their drivers put out great overall sound with solid volume and extreme dynamics. You also save space and money on additional components.
- 300-mm bass driver for deep kickbass down to 22 Hz
- Down-firing driver with extreme excursion and giant bass reflex port to minimize flow noise even at high volume levels
- Bluetooth 5.0 with Qualcomm® aptX™ and AAC
- 4K HDMI with, ARC and CEC (volume can be adjusted using regular TV remote)
- Dynamore® Technology expands the stereo panorama for impressive audio envelopment
- 5.1 USB-C sound card function
- AUX-In and Optical-In
- high-efficiency Class-D Texas Instruments amplifier
- automatic wake from Standby
- Audio settings for all kinds of applications
- Toggleable upmix from stereo to 5.1 audio for materials with stereo sound only
- Touch-panel control with backlighting and remote control
Specifications
Regal-Lautsprecher UL 20 Mk4 25 (Stk.)
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Description Item Width 21.5 cm Height 33.5 cm Depth 25.1 cm Weight 6.2 kg -
Description Item Terminal clamps Screw terminals, brass coated -
Description Item Banana plug compatible Yes Maximum cable diameter 4 mm Equalization port (position) back Equalization port 1 Removable front cover Yes Cabinet material MDF Cabinet surface Laminated Net internal volume 10.5 L Wall mounting brackets Yes Tweeter (number per enclosure) 1 Tweeter (diameter) 25 mm Tweeter (material) Fabric Bass/Midrange driver (number per enclosure) 1 Bass/Midrange driver (diameter) 165 mm Bass/Midrange driver (material) Kevlar Continuous power handling (IEC - Long Term) 50 W Sensitivity (2.83 V / 1 m) 87 dB Frequency range 60 - 20000 Hz Peak power capacity (IEC - Short Term) 80 W Maximum sound pressure level 104 dB/1m Impedance 4 Ohm Acoustic principle 2-way-system Enclosure type Bass reflex Crossover frequency internal switch 2800 Hz
CONCEPT 12 Subwoofer
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Description Item Width 41 cm Height 59 cm Depth 48 cm Weight 27.8 kg -
Description Item AUX Yes Cinch input stereo 1 3.5mm stereo in 2 Digital inputs optical 1 Terminal clamps Push terminals Bluetooth Yes Bluetooth 5.0 Yes Bluetooth AAC Yes Bluetooth aptX Yes Video outputs - HDMI 1 Video inputs- HDMI 1 High level speaker outputs 5 5.1 USB sound card Yes HDMI ARC CEC Yes USB C Yes -
Description Item Dolby Digital Yes Dolby Pro Logic II Yes DTS Digital Surround Yes Dolby Pro Logic Yes Dynamore® Yes -
Description Item Integrated DSP Yes Display Yes Power supply voltage 230 V Maximum power consumption 325 W Safety class 2 Storage for settings when disconnected Yes Standby-Function Yes Standby-Power consumption 0.4 W Input gain adjustment Yes Level control Yes Power output capacity impulse (peak) Satellite 35 W Power output capacity impulse (peak) Bass 150 W Adjustable sound settings Yes Amplifier configuration 5.1 Amplifier technology Class D Amplifier channels 6 Audio-Digital-Analog-Converter 24 Bit, Texas Instruments Integrated DD/dts/PLII-Decoder Yes -
Description Item Remote control Yes -
Description Item Lowest frequency (-3 dB) 22 Hz Maximum cable diameter 2.5 mm Equalization port (position) back Equalization port 1 Front-firing Yes Cabinet material MDF Cabinet surface Laminated, matte Integrated stand Yes Woofer (number per enclosure) 1 Woofer (diameter) 300 mm Woofer (material) cellulose Frequency range 22 - 150 Hz Maximum sound pressure level 113 dB/1m Acoustic principle 1-way-system Enclosure type Bass reflex -
Description Item Mac OS Yes Microsoft Yes
Accessories
All required accessories are included in the delivery.
Recommended accessories
Included components
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1 × Bookshelf speaker UL 20 Mk4 25 (Pair)
–
Black
- 2 × Regal-Lautsprecher UL 20 Mk4 25 (Stk.) – Black
- 2 × Schwarz Gummifüße (4 Stk.) für UL 20/40 Mk4 25 (ET) – Black
- 2 × ULTIMA 20 Mk4 Cover – Black
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1 × CONCEPT 12 Subwoofer
–
Black
- 1 × Power cord – Black
- 1 × Speaker cable, 2x1 mm², 25 m
- 1 × remote control for CONCEPT 8/12
- 2 × AAA battery
Downloads & support
Shipping information
Shipping informationInformation about the guarantee
Warranty and guaranteeAudio glossary
Audio lexicon: Technical terms quickly explainedContact details
Buyers' guide and service
Store Finder
Experience our products in person and talk to our team directly for the best expert advice. OverviewMinimum age: 18. You must
live in either Austria, Belgium, Spain, France, Ireland, Italy, Luxembourg, the
Netherlands, or Portugal. Depending on country, installment payments can be made
using a credit card, a debit card, or SEPA direct debit.
Pending credit check performed by Alma. Duration of financing comprises either
2 or 3 monthly installment payments as chosen by the consumer. Customers paying
Alma installments pay no fees, effective annual interest of 0.00% applicable to
loan agreements concluded between 21/03/2025 and 26/03/2025. 0% financing is restricted
to selected products and order values ranging between 99 EUR and 5,000 EUR,
only for transactions in euros. Individual monthly installments for your order
depend on value of goods and will be displayed to you on the relevant product pages as well as the Alma checkout.
Creditor: Alma SAS, 176 Avenue Charles de Gaulle, 92200 Neuilly-sur-Seine, France. Security of payments guaranteed by Alma and its service providers. All payments protected by 3D Secure. Depending upon country, eligible customers must have a valid and accepted credit or debit card as a payment source, or share their SEPA direct debit information with Alma.
More information about Alma Installments can be found here: https://teufelaudio.com/payment-options