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“No matter how long you inspect these 1.1 m high towers, you won’t find a bass reflex opening - not even on the bottom. Who decides to forgo on efficiency and depth on a 2,800 Euro floor standing speaker? Almost no one would do such a thing – except for Teufel’s developers of the Definion 5, citing not only the ‘ideal precision’ of a sealed enclosure design in regards to impulse handing, but also a markedly higher power handling capacity and low distortion at high levels compared to a bass reflex construction. In addition, the use of real virgin wool instead of the usual synthetic damping materials creates the effect of an enclosure that is 10% larger which [...] improves efficiency and depth. The low end is given as 42 Hz minus -3  dB.““Even the black baffle does more than simply look elegant. It guides the dispersion behaviour in the high ranges in the desired direction: that is, towards a more vertical channelling, thereby reducing floor and ceiling reflections. In addition, a floating baffle prevents enclosure resonances from being transferred to the listener.”“Not only is the enclosure’s design, form, and construction amazing (the workmanship on Teufel’s Definion 5 is first class), the drivers are as well. By this I am referring to the three bass drivers included in each column, even if it’s not clear whether the Berliner’s unique design is to be praised primarily because of the light weight and stable paper aluminium sandwich membrane, the exuberant yet measured  linear excursion of +/- 8 mm, a generous and dimensional dynamic, or the devil (Sorry – I simply couldn’t resist.) knows what else.”“Why? Well, for one thing there are the coaxial drivers that are still less common in this price class than separate drivers. Another is the flat membrane for the mid ranges.”“What is Teufel’s Definion 5 capable of? One thing for sure: high volumes when needed. It can be loud without drifting into bright tones or covering everything with an uncontrolled bass blast. The sealed enclosure seems to have paid off: I put on the Pixies ‘Vamos’ (from the album ‘Come on Pilgrim’), plugged in the amplifier and then sat back to see what would happen… Hm, not bad, is all I can say.“Conclusion“If you’re looking for a lively, rather more powerful than anemic sounding loudspeaker with stable levels, and in particular one that is energy-packed, and if you appreciate a highly responsive bass – you’ve come to the right place. For its price class, Teufel’s Definion 5 has no real weaknesses. It’s an all-rounder with a fondness for precisely timed and rhythmically accurate music playback. That the Def 5 has superior workmanship, a 12 year guarantee, and can be tested in the quiet of your own home for up to 8 weeks are added benefits.”

 […] Definion 5 is the name of the Teufel’s latest hifi flagship model, and rightly so: the Berliners managed to redefine musical playback with their patented coaxial midrange driver/tweeter. […] Teufel’s developers perfected this technology, using  an extremely stable flat membrane with hexacone reinforcement for the frequency range between 350 Hz and 3.5 kHz with a linear movement and elasticated connection to the frame […]. In the centre of this construction is a 25 mm fabric dome tweeter for a near ideal point source in the frequency range from 350 Hz up to far beyond the limit of hearing. This is the perfect precondition for the positioning of voices and instruments on a soundstage as well as sound that is free from colouration and a precise fine dynamic.Along with intriguing coaxial driver technology, Teufel’s latest entry will win you over with its timeless, elegant design. A superbly lacquered enclosure with a silky-matte polished look is elaborately braced and reduces […] resonances on the inside of the enclosure to a minimum. The use of damping material made from real virgin wool is acoustically optimal and increases the ‘virtual acoustic volume’ of the nearly 1 metre tall floor standing speakers by approximately 10% - overall efficiency and the lower frequencies benefit from this small detail […] The  […] chassis were also especially developed for the Definion 5, the drivers of which push physical parameters such as the low end frequency, handling capacity, maximal excursion, and levels of distortion to the outer limits.Our laboratory tests showed the Definion 5 to evince barely measurable distortion above 500 Hertz, practically perfect omnidirectional sound and a very balanced frequency response. […]  In listening tests, the Definion displayed the advantages of its coaxial drivers: Voices and instruments were wonderfully expansive, highly precise and thrillingly reproduced […]ConclusionTeufel’s new Definion 5 is a wonderful combination of timeless elegance, excellent workmanship, and modern driver technology with a high degree of musicality. With the Definion 5, Teufel offers a durable and musical reference-class loudspeaker that is a delight for both the eyes and the ears for considerably less than € 3,000 a pair.