nuBoxx B-70
Available, delivery time: 3-5 working days *
€698.00
07171 87 12 0
Product
nuBoxx B-70
- Our top floorstanding speaker with 32 Hz bass response - ensures full sound even without a subwoofer
- Three-way system for more detail and resilience in the bass, mids and trebles
- Rediscover your music collection through more precision, impulse fidelity and dynamics
- Powerful sound as a full-range speaker in a surround system or as a party speaker
- Convinces with production Made in Europe and resistant surface
- Foiled housing with noble, lacquered front and magnetic bezel
Setting standards
Our flagship offers the entry into the 3-way world at Nubert This means: More details in voices and instruments, with more level stability and transparency in reproduction at the same time. This makes the nuBoxx B-70 the absolute price/performance tip in stereo and surround.
Stereo speakers
The nuBoxx B-70 is a stereo dream speaker that technically goes far beyond the entry-level class. Three-way technology paired with our state-of-the-art drivers developed in-house ensure more sound fascination with music.
Surround speakers
The three-way technology provides more details in the voice reproduction and a wider dynamic range. A dream for your new surround setup. With 30 Hz lower cut-off frequency, the nuBoxx B-70 can also demonstrate its capabilities without a subwoofer.
Smart HiFi system
Together with the nuConnect ampX, the nuBoxx becomes a powerful hi-fi system with a modern measuring function that leaves little to be desired. In the set you can secure a saving, so it's worth taking action.
Home cinema setup
The nuBoxx B-70 is the perfect start for your new home cinema set. Ideally, you can combine our flagship with the centre speaker nuBoxx B-50 and the rear speaker nuBoxx B-40. Our nuSub XW-1200 then provides the necessary bass.
Details
nuOva B tweeter
The newly developed tweeter delivers the detailed sound above 2.3 kHz you've always wanted. Multi-layer damping and a sophisticated drive system ensure minimal resonance and thus low distortion in every frequency range. Your advantage: Instruments and voices are reproduced at a level far above the entry level.
Midrange speaker
The new midrange driver of the nuBoxx series is in a class of its own. It was developed specifically for its frequency range and is characterised by low distortion. Your advantage: details in speech and instruments reach a new level and the achievable maximum level increases.
B² woofer
Our woofers with B² technology impress with bass power far beyond their size ratio. To achieve this, we use a powerful magnet system with high excursion for level bass reproduction. Your advantage: compact dimensions with a sound worthy of a floorstanding speaker.
nuTerminal and turnout
Our terminal is nickel-plated for the best possible contact and elegant appearance on the back as well. Foil capacitors for the best linear sound and protective circuits against overload are integrated for the crossover. Your advantage: durable components ensure a purchase that lasts a lifetime and sound that does not change over the years.
Colour
More variety in set-up: to match our nuPro, nuLine and nuVero series, the nuBoxx now also comes in timeless black and white. This gives you even more freedom when combining your set-up. Fabric trims in new colours also offer more individuality. The nuBoxx thus fits in with any home décor.
The versions with a grey front come with a grey-melted fascia as standard. For boxes in black and white, the covers in the desired colour can be ordered as an option!
Design
The simple design makes the nuBoxx models a timeless work of art. The simple attachment of the cover with magnets, provides the best possible protection for your speakers. The acoustically permeable fabric ensures transparent sound and an elegant appearance. Our product designer explains the background in a video.
Series overview
Our nuBoxx series is in the tradition of all Nubert speakers and aims to reproduce sound as naturally as possible. Our entry-level series comprises a total of six models that can be combined with the subwoofers from the nuSub series. This makes it possible to put together stereo systems as well as complete surround sets with excellent sound.
Nubert electronic GmbH
Nubertstraße 1, 73529 Schwäbisch Gmünd, Deutschland
Email: info@nubert.de Phone: +49 07171 - 8712-0
Safety Instructions
Before connecting and operating the device, carefully read the user manual, particularly the safety instructions. For your own safety, strictly observe all warning and safety notices in this manual and on the speaker. No work on the speaker other than the actions described here should be performed by the user. Keep this document accessible at all times and hand it over to any future owners.
Intended Use
This speaker is designed exclusively for audio playback in dry indoor environments. Use the speaker only as described in this manual. Any other use (especially safety-critical or medical applications, outdoor installation like specifically IP-certified products) is considered improper and may result in property damage or personal injury. Nubert electronic GmbH accepts no liability for damages resulting from improper use.
General Notes
Never operate the speaker unattended!
Risk of suffocation!
Never allow children to use the speaker unattended or play with its packaging! There is a risk that children may become entangled in the packaging film and suffocate. Ensure that children cannot detach small parts from the devices! These parts could be swallowed, leading to choking hazards. In case of ingestion, contact a doctor immediately!
Caution!
To avoid the risk of property damage, the speaker must not be opened by the operator. There are no user-serviceable parts inside the speaker. Maintenance and repairs should be performed only by authorized, qualified professionals from Nubert. In case of service needs, contact Nubert electronic GmbH directly!
Caution!
If the speaker is operated despite damage, further defects may occur. If any of the following conditions arise, immediately discontinue use of the speaker and contact Nubert electronic GmbH:
- The speaker has been damaged or has fallen.
- Objects or foreign substances have entered the device.
- The speaker emits a burning smell, smoke, or unusual noises.
Placement Instructions
Risk of injury or damage!
Move the speaker with care to avoid injuries or damage!
Caution!
An unstable placement location can lead to damage to the speaker.
- Place the speaker on a level, stable surface and ensure it cannot be tipped over!
- Ensure that no accidental tension is applied to the cables to prevent the speaker from tipping over or damaging the connection ports!
- Keep the speaker away from strong mechanical shocks!
Caution!
Excessive heat build-up inside the device can shorten its lifespan or lead to a fire. Heat exposure on the speaker surfaces can cause damage.
- Do not operate the speaker near heat sources such as radiators or stoves!
- Do not expose the speaker to direct sunlight!
- Never place burning candles or similar open flames on the speaker!
Caution!
Moisture can damage the speaker.
- Use the speaker only in a dry environment!
- Do not operate it outdoors or in damp rooms!
- Protect the speaker from all types of liquids, including dripping or splashing water.
- Do not place containers with liquids (e.g., flower vases) on or near the speaker!
- If the speaker is brought from a cold environment into a warm room, condensation may form inside the device. Wait at least 6 hours before turning it on to ensure it has reached room temperature and is dry!
- Do not use the speaker during rapid temperature changes!
Placement Instructions
Risk of injury or damage!
Move the speaker with care to avoid injuries or damage!
Caution!
An unstable placement location can lead to damage to the speaker.
- Place the speaker on a flat, stable surface and ensure it cannot be knocked over!
- Make sure there is no unintended tension on the cables to prevent the speaker from tipping over or damaging the connection ports!
- Keep the speaker away from strong mechanical shocks!
Caution!
Excessive heat buildup inside the device can shorten its lifespan or lead to a fire. Heat exposure on the speaker surfaces can cause damage.
- Do not operate the speaker near heat sources such as radiators or stoves!
- Do not expose the speaker to direct sunlight!
- Never place burning candles or similar open flames on the speaker!
Caution!
Moisture can damage the speaker.
- Use the speaker only in a dry location!
- Do not operate it outdoors or in damp rooms!
- Protect the speaker from any liquids, including dripping or splashing water.
- Do not place containers with liquids (e.g., flower vases) on or near the speaker!
- If the speaker is brought from a cold environment into a warm room, condensation may form inside the device. Wait until the speaker reaches room temperature and is dry before turning it on!
Connection Instructions
General Connection Instructions
- Unplug all devices in your system from the power supply before making any wiring changes!
- Ensure that all connections are made correctly and that all plugs are firmly seated in their sockets before reconnecting the devices to the power supply!
- Only use the designated cables and connectors for connections! Otherwise, damage or malfunctions may occur.
- When disconnecting the speaker, always pull on the plug, not the cable!
- Ensure that all plugs are securely seated in their sockets!
- Only use cables and accessories recommended by Nubert!
Caution!
Disconnect your amplifier/receiver from the power supply before connecting your speakers! Refer to the amplifier/receiver's user manual for instructions on connecting speaker cables.
Care and Cleaning Tips
Caution!
Improper handling of the speaker may cause damage.
- Always unplug the power cord before cleaning the speaker!
- Ensure that all connections are correct, there are no short circuits, and the speaker is completely dry before resuming operation.
- Do not use harsh cleaning agents or solvents such as gasoline, alcohol, or similar substances!
Housing
We recommend using a standard glass cleaner sprayed onto a cotton cloth. This allows most fingerprints and dirt to be removed easily. Alternatively, you can use window active foam. We advise against using microfiber cloths as they may cause micro-scratches on the surface.
Membranes and Speaker Drivers
To remove dust from a speaker driver, use a lint-free cotton cloth and gently wipe the membrane with very light pressure. All Nubert speakers' tweeters are protected by a grille, which can also be wiped lightly with minimal pressure. If the dust cannot be completely removed, a makeup brush from the drugstore can be used.
Committed to honest sound
We are a German company that has been developing and selling speakers directly for over 45 years. We stand for neutral reproduction so that you receive exactly the same signal that is present on the source. We add nothing and leave nothing out. We promise! You can find more information about our philosophy here.
German engineering expertise
Perfected by our developers in Schwäbisch Gmünd: Our nuBoxx series offers affordable access to the world of hi-fi sound - and at a very high level. Every nuBoxx loudspeaker fascinates with an astonishingly full-bodied and broadband sound that leaves nothing to be desired.
This product as 2nd choice
In some installation locations - for example with rearspeakers behind a curtain - the visual appearance plays a subordinate role, but the function must be guaranteed without restriction. Here, our 2nd choice is the ideal solution for price-conscious customers. These are exhibition items, customer returns or discontinued models with minor signs of use, but which have been technically inspected by our service department. We also give a full 2-year guarantee on the 2nd choice.
X-Remote App
With the Nubert X-Remote app, many functions can be conveniently controlled from your smartphone. In addition to the typical controls for volume and system status, the app allows precise sound adjustments – even using our X-Room Calibration feature on iOS. The app is available for free on the Google Play Store for Android and the Apple App Store for iOS.
Test results
We are awarded. And proud of it.
Accessories
We not only build exceptional loudspeakers and electronics, but also offer the matching accessories. So you can find everything useful for our products, from cables to adapters.
Our recommendations
Not the right one? We recommend taking a look at related products that you might like.
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Reviews
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30 August 2023
....puristisch und genial.
Ich halte mich normalerweise mit Bewertungen zurück, aber in diesem Fall drängt es mich förmlich dazu. Die nuBox B-70 hat mich in vollem Umfang überzeugt und vom ersten Ton an begeistert. Ich habe für meinen "Zweiten Wohnbereich ( ca. 70 m² Wohnz., Esszimmer und Küche ) " ein paar Boxen gesucht die ausschließlich im Stereobetrieb ihre Arbeit verrichten sollen. Dazu habe ich mir vielzählige Lautsprecher aus den unterschiedlichsten Preissegmenten angehört. Es gab natürlich den einen oder anderen Favoriten, aber so richtig hatte mich bis Dato kein Lautsprecherpaar für meine Verwendung überzeugen können. Also habe ich mich nach ausführlichem Studium von Bewertungen und Meinungen, Testergebnissen und Artikeln aus einschlägiger Fachliteratur dazu entschieden die nuBoxx B-70 zu bestellen. Mit der Option die Lautsprecher bei Nichtgefallen wieder zurücksenden zu können geht man als Kunde bei Nubert eben kein Risiko ein. Heute glaube ich zu wissen warum Nubert diese Rücksendeoption seinen Kunden anbietet. Die sind von ihrer Arbeit und ihren Produkten einfach überzeugt, und sich bewusst darüber welch erstklassige Ware sie anbieten. Ich denke nicht das es wirklich viele Rückläufer gibt. Die Lautsprecher wurden wie üblich bei Nubert innerhalb kürzester Zeit geliefert, von mir direkt entpackt, aufgestellt und angeschlossen. Ich steuere die Boxen über einen Yamaha AV-Receiver RX-A2070 Avantage Serie an, und betreibe diesen wie oben schon erwähnt im Stereobetrieb. Die Verarbeitung der Lautsprecher ist wie nicht anders zu erwarten sehr gut, das Design ist schlicht puristisch. Das kann man mögen oder eben auch nicht. Ich habe die Lautsprecher in weiss mit grauer Front bestellt. Bei der Bestellung hatte ich diesbezüglich etwas Zweifel, aber wie sich herausgestellt hat passt es super zu meiner Einrichtung und gefällt. Die nuBoxx B-70 Standlautsprecher haben recht beeindruckende Abmessungen, was in schwarz vielleicht etwas drücken könnte. In meiner Wohnzimmerlandschaft fallen die B-70 in der hellen Farbkombination zwar auf weil sie einfach da sind, andererseits drängen sie sich aber auch nicht besonders in den Vordergrund. Sie stehen einfach anmutig da und überzeugen mit wertiger Eleganz, es passt bei mir optisch einfach hervorragend. Das hatte ich so nicht erwartet und bin daher um so freudiger überrascht. Dann habe ich die B-70 angeschlossen und ausprobiert, erst mal ohne Subwoofer der sollte eigentlich später angeschlossen werden. Es hat mir direkt die Sprache verschlagen. Die Speaker waren zu diesem Zeitpunkt nur grob ausgerichtet und überhaupt nicht eingestellt. Was da schon an Klang und Volumen den Raum flutete hat mich schlichtweg vom Sockel gehauen. Ab der ersten Sekunde war mir sofort bewusst das ich diese Lautsprecher unter keinen Umständen zurücksende, egal was passiert, egal was die "Regierung" dazu sagt. Die B-70 erzeugen in jedem Bereich ein absolut überzeugendes Klangbild, es geht nichts verloren, kein Instrument keine Note wird verschluckt. Der Lautsprecher versteht es einen großen Raum zu beschallen ohne aufdringlich zu wirken, können aber auch leise im Hintergrund spielen ohne an Klangqualität zu verlieren. Die richtige Ausrichtung und Einstellung der Lautsprecher haben dem Ganzen dann noch die Krone aufgesetzt, einfach ein wunderbares Hörerlebnis. Um den Bass noch etwas zu betonen stand noch zusätzlich ein Subwoofer parat ( Klipsch SPL-150 ). Ich musste mir wirklich die Frage stellen ob es den überhaupt braucht ? Der Tiefgang der nuBoxx B-70 mit seinen 2 Bassreflexrohren ist so hervorragend das es einen Subwoofer nicht wirklich benötigt, die B-70 können auch hier vollends überzeugen. Ich habe mich dann doch dazu entschlossen den Woofer mitlaufen zu lassen, dabei ist dieser so konfiguriert das er nur die aller tiefsten Frequenzen wiedergibt, zudem ist er sehr sehr weit runtergeregelt, alles Andere wäre einfach zuviel. Kurzum, diese Lautsprecher sind eine ganz klare Kaufempfehlung ! Ich kann nur 5 von 5 Punkten vergeben....
30 July 2023
Tolle Beratung - Toller Lautsprecher
Erst einmal möchte ich mich für die sehr ehrliche, fachliche und zu keinem Zeitpunkt aufdringliche Beratung bei Nubert vor Ort bedanken. Hier wurden auf meine Höreindrücke eingegangen und es wurde nicht versucht mir dies oder jenes Produkt aufzuschwatzen. Ich hatte von Beginn an die B-70 im Auge und habe auch gezielt dafür einen Termin zum Probehören vereinbart. Ich konnte mir ausgiebig Zeit nehmen um mir die Lautsprecher anzuhören. Darüber hinaus wurde mir noch die Möglichkeit geboten die anderen Modelle in vergleichbarer Größe anzuhören. Auch wenn ich dabei eindrucksvoll erfahren durfte, dass die Sache mit den „ehrlichen Lautsprechern“ kein leeres Werbeversprechen ist, blieb ich trotzdem bei den B-70. Diese überzeugten mich gerade weil sie vielleicht nicht ganz so „ehrlich“ sind wie die höherpreisigen Produkte. Dabei liefern sie aber trotzdem einen eindrucksvollen Klang mit sehr satten und für meinen Geschmack genau richtig dosierten Bässen, präsenten, aber nicht aufdringlichen Mitten und sehr klaren aber dabei niemals schrillen Höhen. Für mich ein durchweg runder, angenehmer Klang, dem man lange zuhören kann. Was soll ich noch sagen…nach einem kurzweiligen Vormittag in Schwäbisch-Gmünd wurden kurzerhand die Rücksitze umgelegt und zwei B-70 in den Kofferraum geladen. Nach dem auspacken zu Hause und kurzem experimentieren mit der optimalen Aufstellung bin ich jetzt sehr glücklicher Besitzer zweier Standlautsprecher, die meiner Meinung nach in diesem Preissektor ungeschlagen - wenn nicht sogar „viel zu gut“ für diesen Preissektor sind.
10 March 2023
Was stimmt mit euch nicht ?
Vor euch muss man echt den Lötkolben und die Stichsäge verstecken. Keine Ahnung wie ihr das hinbekommen habt aber meine Zensor 7 können nur kaputt gewesen sein. Alles was mal irgendwann dokumentiert wurde, wie man Boxen nicht aufstellen sollte findet man bei mir Zuhause. Was die B-70 daraus machen zaubert nur ein grinsen ins Gesicht. Wer nicht gerade sein Bausparvertrag kündigen möchte und was klanglich solides haben möchte, ist mit den B-70 auf der richtigen Seite. Jetzt leichtes meckern, die Farbauswahl könnte noch ein paar zusätzliche Nuancen vertragen. Es kaufen nicht nur Junggesellen bei euch ein :) was die Boxen machen ist der Regierung im Haus egal, Hauptsache es passt farblich zu den Gardinen.
7 November 2022
Preis-Leistungs-Verhältnis überragend
Kurzfassung: - Ansprechendes minimalistisches Design - Dank der Stoffabdeckung homogene Front - Klarer & satter Klang der Höhen und Mitten - Kräftiger Bass - Preis-Leistungs-Verhältnis überragend Details: Meine bisherigen Lautsprecher waren NuLine 34 betrieben an einem hochwertigen Stereoverstärker mit 2 x 160 W Ausgangsleistung. Seit zwei Jahren müssen die Lautsprecher auch bei Filmen ihren Dienst leisten, wobei mir besonders im Bassbereich öfter was gefehlt hat. Die Wahl stand ursprünglich zwischen NuLine 344, NuVero 140 und zwei leistungstechnisch vergleichbaren Modellen der Firma C. Da mein Hörraum aber klein und asymmetrisch ist war es mir schlichtweg zu schade drum, hier solche Edelprodukte reinzustellen. Dann las ich im NuForum über die 2021 rausgekommene NuBox B-70. Die homogene Front fand ich sofort sehr ansprechend und die weißen Gehäuse passen perfekt zu meinen weißen Bassabsorbern. Die technischen Daten klangen genauso vielversprechend wie die Erfahrungsberichte der Forumsteilnehmer also wurde die NuBox B-70 kurzerhand bestellt. Heute kamen die guten Stücke nun an und schon die ersten paar Minuten Probehören haben gezeigt, dass die Kaufentscheidung 100% richtig war. Im Gegensatz zur NuLine 34 erscheint mir der Klang klarer, satter und im Bassbereich natürlich deutlich markanter. Als kurzen Heimkino-Test habe ich das Intro von Top Gun Maverick genutzt und hier hat die NuBox B-70 die NuLine 34 endgültig vernichtet. Die niedrigere Grenzfrequenz und die höhere Membranfläche sind unüberhörbar. Ich weiß, unterschiedliche Gewichtsklassen, unfairer Vergleich etc., aber es ist eben der einzige Referenzrahmen, den ich hier in meinem Raum, wo es für mich zählt, habe. Der Bass den die B-70 liefert ist für meine Bedürfnisse mehr als genug und das bei moderater Lautstärke. Man könnte per EQ also noch so einiges rausholen. Mein Bruder betreibt ein Surround Setup mit NuLine 334 als Front-Lautsprecher und da geht vom Schalldruck im Bassbereich natürlich noch mal mehr, wobei die Grenzfrequenz bei der NuBox B-70 fast gleich gut ist. Eine NuVero 140 würde sogar bis 25 Hz runtergehen und bietet nochmal mehr Membranfläche. Im Gesamtpaket ist für mich die NuBox B-70 aber die bessere Lösung was Raumgröße, Design und natürlich auch Preis-Leistung angeht. Beim letzten Punkt rasiert die B-70 ziemlich gnadenlos die Konkurrenz. Wo sonst kriegt man Hochtöner, Mitteltöner und ZWEI 18 cm Tieftöner in einem hübschen Gehäuse für das Geld? Von daher gebe ich 5 Sterne und freue mich auf den nächsten Kinoabend. Mein Dank geht an die Firma Nubert für die großartigen Produkte.
Technical information
Device type: | Floorstanding loudspeaker |
---|---|
Width: | 21,0 cm |
Height: | 107,0 cm |
Depth: | 32,8 cm |
Width (additional information): | 27,8 cm (with base) |
Height (additional information): | 109,2 cm (with plinth) |
Depth (additional information): | 36,2 cm (with base) |
Weight: | 30,5 kg |
Packaging dimensions (W x H x D): | 118,0 cm x 44,5 cm x 35,5 cm |
Shipping weight: | 33,5 kg |
Standard colour: | White |
Color: | White with White front |
Scope of delivery: | nuBoxx B-70, base plate with elasticated buffers, mounting kit, speaker cable 2x 0.75 mm² 4 m, operating instructions in German |
EAN / GTIN: | 4260166757811 |
Country of origin: | China |
WEEE-Reg. No.: | DE 48888173 |
Construction Method: | Bass reflex |
Construction: | Direct radiator |
System: | 3-way |
Tweeter: | 1x 26 mm |
Tweeter material: | Silk fabric |
Tweeter crossover frequency: | 2.300 Hz |
Midrange speaker: | 1x 123 mm |
Midrange material: | Polypropylene |
Midrange crossover frequency: | 400 Hz |
Woofer: | 2x 180 mm |
Woofer material: | Polypropylene |
Lower cut-off frequency (-3 dB): | 32 Hz |
Upper cut-off frequency (-3 dB): | 24.000 Hz |
Lower cut-off frequency (-6 dB): | 30 Hz |
Upper cut-off frequency (-6 dB): | 28.000 Hz |
Efficiency (2.83V/1m): | 86,5 dB |
Efficiency (1W/1m): | 83,5 dB |
Continuous load capacity: | 320 W |
Pulse load capacity: | 450 W |
Shielding: | Magnetically compensated |
Impedance: | 4 Ohm |
Protection: | Self-resetting fuses |
Loudspeaker inputs: | 1 |
Box type, sound and recommended use
As the top model in the series, the nuBoxx B-70 sets several records at once: No other nuBoxx is so powerful and level, so resolutely tone-setting, plays so profoundly and honestly. For the first time, our engineers have succeeded in establishing a fully-fledged three-way system in our entry-level series, creating a floorstanding loudspeaker that achieves unprecedented acoustic excellence in this class at a surprisingly affordable price.
As a full-grown floorstanding speaker, the nuBoxx B-70 knows how to make use of generous room conditions, bridges even wide listening distances and benefits from the powerful output stages of our nuConnect and nuPower amplifiers. Highly resilient and efficient, the nuBoxx B-70 comes up trumps even at party-suitable levels, but also knows how to bring quiet sounds to the ear authentically and with great detail.
It benefits from the elaborate three-way principle that reproduces mids, highs and basses precisely and evenly, from the overwhelmingly low lower cut-off frequency, which at 32 Hertz (at -3 decibels) is close to the threshold of human hearing, to the pleasantly finely resolved super high frequency range. The nuOva-B dome tweeter with nuLine technology shines not only with outstanding fine detail, but also with optimum omnidirectional sound dispersion, which makes an optimal listening experience across a wide area a reality. The 123-millimetre driver, which is also used in the wall-mounted speaker, ensures optimum dispersion characteristics and high efficiency. In combination with the elaborate crossover and the custom-made cabinet, the above-mentioned characteristics lead to an outstandingly natural and impressively spatial appearance that does not lose its fascination even when sitting far beyond the apex of the stereo triangle.
Even without an additional subwoofer, the nuBoxx B-70 promises cinema-quality film enjoyment in home cinema use and enchants even ambitious listeners as a sound transducer for a stereo system. Professionals can rely on the nuBoxx B-70 as a neutral passive monitoring solution. If you are looking for maximum sound enjoyment for a manageable investment, the nuBoxx B-70 is the right choice.
Construction principle/housing
Three-way floorstanding loudspeaker in bass reflex design. The 19 to 38 millimetre thick cabinet walls are made of acoustically advantageous and robust wood fibre material (MDF). Precisely calculated internal bracing not only increases the mechanical stability of the construction, but above all suppresses resonances that are harmful to the sound. While the baffle is finished in a satin matt graphite or ice grey lacquer, the cabinet body is finished in a high quality, durable black or white decorative film. The removable front cover is covered in light or dark grey mottled acoustic fabric and is magnetically attached, so there are no visible brackets to detract from the elegant appearance. A secure stand is ensured by the rectangular base.
Chassis
The nuBoxx B-70 is equipped with a 26 millimetre tweeter (nuOva B), a 123 millimetre midrange driver and two 180 millimetre woofers (B² technology).
All nuBoxx models rely on the same silk-fabric tweeter dome, developed on the basis of the advanced nuOva chassis of the nuLine series and christened nuOva B. A multi-layered damped rear chamber volume behind the oscillating system ensures a particularly harmonious frequency transition to the bass-midrange driver, while the carefully designed and precisely manufactured front panel with wide-dispersion sound guidance optimises the dispersion characteristics and fine detailing of the super-high frequency range above 7 kilohertz. As a result, the new nuBoxx tweeter sets standards in terms of resolving power and allows the audience to enjoy maximum listening pleasure even outside the narrowly defined "sweet spot".
The two 180-millimetre woofers with polypropylene cone rely on a particularly strong and responsive magnetic drive. Its streamlined design and the generous rear ventilation of the spider avoid compression effects and cool the extra-long voice coil under high continuous load. Due to the particularly wide and flexible diaphragm clamping with a low fundamental resonance, the maximum linear excursion could be significantly increased compared to previous driver models, which enables a particularly profound and level-fixed bass reproduction. The total excursion of the woofer is almost three centimetres. Special design measures also prevent the diaphragm from "breaking up" at higher frequencies (keyword: partial vibrations), despite its robust suspension.
As the only three-way design in the nuBoxx series, the B-70 also uses a midrange driver with a diameter of 123 millimetres (which acts as a woofer in the BF-10 wall-mounted speaker). This driver is characterised by minimal distortion values and minimal resonances, especially in the limited midrange spectrum. The comparatively small diaphragm area ensures a particularly good omnidirectional sound distribution. The amplified drive brings the efficiency to the level of the powerful woofers.
Crossover
The crossover separates the signal paths, linearises the driver systems and optimises the impulse and phase. As usual with Nubert, the circuit board is above average and equipped with long-term stable film capacitors at the sound-critical points. The three-way design of the B-70 demands particularly careful tuning and sophisticated harmonisation of all drivers. A reliable protection circuit cuts off the amplifier current to the chassis and crossover in the event of an impending overload and then automatically resets itself to normal operation.
Connection terminal
All nuBoxx speakers are equipped with a completely redesigned connection terminal, which is precisely recessed in the lower area of the rear panel. The bi-wiring terminal of previous nuBox generations, which is rarely used in the entry-level class, has been replaced by two high-quality angled screw terminals with precision threads, which now also offer banana plugs a secure hold and an optimum contact surface.
More info in technology
For all technically interested music and home cinema lovers who are not put off by hard facts and metrological details, Günther Nubert's ""Technik satt"" offers plenty of technical correlations and electro-acoustic background knowledge as well as the topic of sound optimisation and insights into the development and history of Nubert loudspeakers and devices.