EFFEKT 2
Wireless active dual stereo speakers for rear-speaker expansion of compatible Teufel systems
399,99 €
- New Generation
Highlights
Why we love this product
The ULTIMA 25 ACTIVE is our plug-and-play living-room bass machine. No need for a bulky amplifier or AV receiver. The subwoofer naturally pairs wirelessly. Enjoy games, electronic dance music, and experience films with the classic Berlin bass from Teufel. Can you stand up to the pressure?
Key advantages at a glance
- A pair of high-end active bookshelf speakers with integrated AV receiver and external wireless T 10 subwoofer
- The T 10 Mk2 subwoofer offers a lower cutoff frequency and improved precision, usable as a front- or down-firing subwoofer and controllable wirelessly or via cable.
- Bluetooth 5.0 with aptX® and AAC for music streaming from Spotify, Amazon Music, YouTube etc., Video sound is perfectly synchronized
- Large 25-mm tweeter with Phase Plug and Waveguide for detailled sound, 2-way system with balanced tuning, fiberglass midwoofer with phase plug for natural sounding acoustic instruments, bass-reflex construction for deep, precise bass
- Dynamore® Virtual Center for crystal clear dialogue, equalizer, sound modes for full bass even at low volumes, night mode, auto-wake from standby
- Dimmable OLED display, on-speaker controls, touch slider, remote control, connects with HDMI ARC/CEC, optical in, AUX, USB-C soundcard function for PC/Mac
- Can be expanded with wireless EFFEKT 2 and EFFEKT rear speakers for true Surround Sound
- Includes connection cable (3.5 m), grilles, antenna, rubber feet and remote control, compatible with the AC 7001 SP2 floor stand or AC 7500 SM wall mount
Features
All technologies at a glance
The ULTIMA Sound
Powerful bass, high dynamics and an engaging sound are the hallmarks of the ULTIMA series. The ULTIMA 25 ACTIVE 2 brings these strengths together, delivering an immersive listening experience whatever you’re listening to.
Bluetooth: High-Fidelity Wireless Audio
Our products provide clean, stable Bluetooth connection with minimal power consumption at ranges from 10 meters and up.
Stream music, movies, or games from your smartphone, tablet, laptop, PC or Mac.
All operating systems supported.
Perfectly synced
The sound and video always match whether you're gaming or watching TV.
Qualcomm aptX
Qualcomm aptX is a Bluetooth codec which, similar to AAC, delivers CD-quality audio wirelessly. Both sending and receiving device must support this codec in order to use it. AptX is supported by Android devices as well as Mac OS.
Specifications
UL 25 ACTIVE 2
Active speaker of the ULTIMA 25 ACTIVE 2 set
-
Description Item DAB+ Yes FM Yes RDS Yes Station memory positions 6 -
Description Item Width 21.5 cm Height 36.5 cm Depth 26 cm Weight 8.5 kg -
Description Item AUX Yes Cinch input stereo 1 Digital inputs optical 1 Bluetooth Yes Bluetooth AAC Yes Bluetooth aptX Yes Inputs HDMI 1 HDMI ARC CEC Yes USB C Yes Subwoofer output, wireless Yes USB-C sound card Yes -
Description Item Dolby Digital Yes Dolby Pro Logic Yes Dynamore® Virtual Center Yes -
Description Item Power supply voltage 230 V Automatic on/off Yes Standby-Function Yes Power output capacity impulse (peak) Satellite 50 W Total power output capacity (RMS) 100 W Adjustable sound settings Yes Amplifier technology Class D Amplifier channels 2 Performance measured by 4 Ohm -
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 Wall mounting brackets Yes Tweeter (number per enclosure) 1 Tweeter (diameter) 25 mm Tweeter (material) Textile Bass/Midrange driver (number per enclosure) 1 Bass/Midrange driver (diameter) 165 mm Bass/Midrange driver (material) Fibreglas Frequency range 41 - 20000 Hz Maximum sound pressure level 104 dB/1m Impedance 4 Ohm Acoustic principle 2-way-system Enclosure type Bass reflex Crossover frequency internal switch 2600 Hz FSC® certified wood Yes -
Description Item Remote control Infrared -
Description Item Power cable 1.5 m Speaker cable 5 m
UL 25 PASSIVE 2
Passive speaker of the ULTIMA 25 ACTIVE 2 set
-
Description Item Width 21.5 cm Height 36.5 cm Depth 24 cm Weight 6 kg -
Description Item Terminal clamps Screw terminal, gold-plated -
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 Wall mounting brackets Yes Tweeter (number per enclosure) 1 Tweeter (diameter) 25 mm Tweeter (material) Textile Bass/Midrange driver (number per enclosure) 1 Bass/Midrange driver (diameter) 165 mm Bass/Midrange driver (material) Fibreglas Frequency range 41 - 20000 Hz Maximum sound pressure level 104 dB/1m Impedance 4 Ohm Acoustic principle 2-way-system Enclosure type Bass reflex Crossover frequency internal switch 2600 Hz FSC® certified wood Yes
T 10 Mk2 Subwoofer
-
Description Item Width 34.1 cm Height 45 cm Depth 38 cm Weight 15.5 kg -
Description Item Cinch input 1 -
Description Item Power supply voltage 230 V Automatic on/off Yes Maximum power consumption 150 W Mains cable - IEC connector (non-heating device) Yes Safety class 2 Fuse Yes Storage for settings when disconnected Yes Standby-Function Yes Standby-Power consumption 1 W Input gain adjustment Yes Level control Yes Phase control Yes Wireless Subwoofer Yes Power output capacity impulse (peak) Bass 150 W Amplifier configuration 1.0 Amplifier technology Class D Amplifier channels 1 Variable low-pass filter Yes -
Description Item Lowest frequency (-3 dB) 31 Hz Suitable for AV receiver Yes Equalization port 1 Down-firing Yes Front-firing Yes Cabinet material MDF Cabinet surface Laminated, matte Integrated stand Yes Woofer (number per enclosure) 1 Woofer (diameter) 250 mm Woofer (material) Aluminium Frequency range 31 - 190 Hz Maximum sound pressure level 115 dB/1m Acoustic principle 1-way-system Enclosure type Bass reflex FSC® certified wood Yes -
Description Item Cable length 1.5 m
“An excellent price-to-performance ratio…”
www.areadvd.de
20.08.2026
“In short, it’s fair to say that it’s probably hard to find a better active speaker system for less money. The ULTIMA 25 ACTIVE 2 offers a well-thought-out and coherent overall package, with great practical versatility and exceptional sound quality.”
“Excellent price-to-performance ratio: the Teufel ULTIMA 25 ACTIVE 2 impresses with its flawless finish, practical features and first-class sound.”
“The Ultima 25 Aktiv 2 turns film sound into an experience…”
www.hifi.de
20.08.2026
“The Ultima 25 Aktiv 2 turns film soundtracks into an experience, just like its predecessor. The bass sounds more controlled, whilst the sound level remains consistently high. With music, there’s a slight lack of transparency and nuance, but the sound is still dynamic and largely uncoloured. Film sound enthusiasts will appreciate the option to upgrade to a wireless 2.1 or even 4.1 system.”
Accessories
All required accessories are included in the delivery.
Recommended accessories
-
-
Subwoofer-Cable 5.0m - C3550W
High-end mono subwoofer RCA cable
24,99 € -
Digital Cable Audio 1.5m - C7515O
Digital optical connector cable with TOSLINK / 3.5 mm mini TOSLINK<br />
19,99 € -
High-Speed HDMI® Cable with Ethernet
Highspeed HDMI cable supports all current specifications such as 4K 50/60p and 4K 3D
16,99 € -
K&M AC 7001 SP 3 Stand
K&M brand HIFI-class floor stand for compact speakers
99,99 € -
K&M AC 7001 SP 3 Stand (Pair)
K&M brand HIFI-class floor stands (2x) for compact speakers
199,00 € -
K&M AC 8500 SM wall mount (pair)
High quality wall mount for compact speakers with M6 thread in the baseplate
99,99 € -
AC 7500 SM wall mount
Wall mount for compact class wood box format speakers and dipoles
29,99 € -
AC 7500 SM wall mount (pair)
Wall mount for compact class wood box format speakers and dipoles
59,00 € -
Shure BLX24/PG58-S8
The Shure BLX24/PG58-S8 wireless system brings together the Shure PG58 vocal microphone, the BLX2 direct-connected wireless transmitter, and BLX4 receiver for wireless microphone signal transmission with ranges up to 90 meters line of sight, perfect for musicians, artists, performers, and speakers
359,00 € -
Subwoofer Wireless Transmitter
Transmission module for sending subwoofer signals wirelessly
99,99 € -
Teufel Streamer
Universal Wi-Fi and Bluetooth streamer with Cirrus Logic® high-end digital-to-analog converter
249,99 €199,99 €Lowest recent price299,99 €Original price
Replacement parts
Included components
ULTIMA 25 ACTIVE 2 Club Edition
-
1 × Pair of UL 25 ACTIVE 2 bookshelf speakers
–
Night Black
- 1 × UL 25 ACTIVE 2 – Night Black
- 1 × UL 25 PASSIVE 2 – Night Black
- 1 × ULTIMA 25 ACTIVE 2 power cable (1.5 m)
- 1 × ULTIMA 25 ACTIVE 2 cover (pair) – Black
- 1 × ULTIMA 25 ACTIVE 2 remote control
- 1 × ULTIMA 25 ACTIVE 2 speaker cable (5 m)
- 1 × ULTIMA 25 ACTIVE 2 DAB antenna
-
1 × T 10 Mk2 Subwoofer
–
Black
- 1 × Power cable for T 10 Mk2 subwoofer (ET) – Black
Downloads & support
Downloadable documents
- Safety Booklet: T 10 Mk2 Subwoofer
- Declaration of conformity: T 10 Mk2 Subwoofer
- Quick Start Guide: T 10 Mk2 Subwoofer
- Operating instructions: T 10 Mk2 Subwoofer
- Operating instructions: Pair of UL 25 ACTIVE 2 bookshelf speakers
- Quick Start Guide: Pair of UL 25 ACTIVE 2 bookshelf speakers
- Declaration of conformity: Pair of UL 25 ACTIVE 2 bookshelf speakers
Shipping information
Shipping informationInformation about the guarantee
Legal guaranteeAudio glossary
Audio lexicon: Technical terms quickly explained
20% financing information
Minimum 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 06/10/2026 and 07/10/2026. 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
1 Offer valid until 07.10.2026 23:59.
The voucher is only intended for the use of private customers. The voucher cannot be redeemed for cash, nor can it be used in combination with other vouchers. It cannot be used for orders that have already been placed. The resale of a voucher is prohibited and it will lose its value in the case of being resold. You can learn more about the terms and conditions in the General Business Conditions.