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nuSub XW-700

  • Convincing: low space requirement despite amazingly high performance
  • Performant: Lightweight long-stroke chassis with high efficiency in downfire arrangement
  • Flexible: Easy positioning thanks to a width of just 30cm
  • Connecting: even more flexibility in the room thanks to wireless connection
  • Expandable: Wireless connection option with nuPro active speakers
  • Attractive: High-quality finish in white or black sanded lacquer
  • Adaptable: Perfect room customisation thanks to X-Room-Calibration
  • Convenient: Simple commissioning and easy to control via the X-Remote app

Compact dimensions, high bass power.

The compact and almost inconspicuous bass loudspeaker develops from a "bourgeois to an arsonist" when activated. With 180 watts of continuous power and 250 watts of impulse power, it realises impressive emphasis, rich volume and high control in every situation. Whether for a high-impact action film, in stereo mode or for gaming. It is always highly precise and extremely powerful and is completely in command under all conditions. In combination with the Nubert-exclusive X-Room calibration, the fully-fledged digital power amplifier with first-class DSP technology, the long-throw driver and the powerful power amplifier, the nuSub XW-700 delivers a continuously powerful bass performance with high impulse fidelity, lightning-fast response and astonishing depth.

2.1 System

Our subwoofer is ideal for setting up a 2.1 system in combination with the nuConnect ampX. Here, speakers and subwoofer are synchronized to play from a single source.

Decent surround woofer

For a surround setup with minimal space requirements, the XW-700 is the first choice. With a width of only 30 cm, the subwoofer finds its place next to any lowboard.

Wireless Connection

A subwoofer that develops so much bass benefits immensely from optimal positioning in the room. With its wireless connection via X-Connect or X-Connect Surround, the XW-700 offers maximum flexibility in placement.

For every gamer

If you enjoy playing games or watching series on your PC and have always lacked the necessary bass, then the nuSub XW-700 is the perfect support, for example in combination with our nuBoxx A-125 pro or the nuPro XS-3000 RC.


High performance driver

The 8-inch driver was developed according to our requirements: High efficiency, high maximum excursion, low resonant frequency and precisely matched to the parameters of the bass reflex enclosure. Your advantage: a subwoofer that combines depth and precision and ideally converts the provided amplifier power into acoustic performance.

X-Connect und X-Connect Surround

Freedom for the woofer. The nuSub series can receive both X-Connect and X-Connect Surround and can therefore be directly connected wirelessly with many Nubert devices. By means of nuConnect trx, the wireless technology can also be retrofitted to other systems. Your advantage: stable connection and free placement of the subwoofer. Further information

X-Remote App


Our subwoofers don't have an included remote control, because your smartphone takes care of that. Our Nubert X-Remote app works with the power-saving Bluetooth LE standard and provides access to all functions of the subwoofer. Your advantage: full control at all times and no more aiming necessary.

X-Room Calibration

Your smartphone is also the heart for our calibration function X-Room Calibration, which automatically corrects the bass by ± 6dB in the range of 20 to 160 Hz with fully parametric equalizers. IOS devices serve directly as a microphone for the algorithm, Android devices require an additional microphone due to different hardware equipment. Your advantage: Better bass reproduction for your listening position.

X-Room Calibration


Our nuSub models are silk-matt and multi-layer lacquered. The choice is yours: White for a subtle look in the living room or timeless black as a statement for the home theater?


The trend is towards greater integration into living spaces and a more inconspicuous appearance for loudspeakers. The design brief was therefore clear: a clean front with gentle curves. The result is a subwoofer that could be mistaken for a seat cube and blends in discreetly.

Series overview

Our nuSub series consists of 4 models, is the latest generation of our woofers and relies on downfire technology. The subwoofers are controlled via the Nubert X-Remote app and can be calibrated to the room via X-Room Calibration from your smartphone. In addition, all subwoofers can also be controlled wirelessly via radio.

Nubert Hörraum nuBoxx

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.

Nubert Gebäude

There's more to Nubert

We develop all nuSub models in Schwäbisch Gmünd. Our engineers optimise every detail, from the housing and drivers to the sound tuning. Once series production has started, all nuSub models are tested by us in Schwäbisch Gmünd for appearance, technology and sound so that you receive a perfect product.

Zweite Wahl

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.

nuReality App

nuReality - AR App

Bring the high end into your home in advance with our augmented reality app. Our 360° view or our AR mode provide the final details for your favourite speakers in your own four walls.

Google Play

Apple Store

Nubert Hörraum nuBoxx

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.

Nubert Gebäude

Quality management

All nuSub models are thoroughly tested by us in Schwäbisch Gmünd to ensure that you receive a perfect product. We check the appearance, technology and sound for the best results for you.

nuReality App

nuReality - AR App

Bring High End into your home in advance with our Augmented Reality App. Our 360° view or our AR mode offer final details for your desired loudspeakers in your own four walls.

Google Play

Apple Store

Listen to it now in our stores!

Test results

We are awarded. And proud of it.

High End-Audio kabellos

X-Connect Surround - hervorragende Klangqualität bei Musik und Heimkino

Günstiger Tiefbass-Meister hat den Basstreiber nuSub XW-700 getestet.

Ehrlicher Kino-Sound mit Dolby Atmos

nuLine-Set: Atmos im Wohnzimmer

Harmoniert perfekt

nuBoxx B-40: ein Schlag gegen die Konkurrenz

Wahrhaftige Lautsprecher zu einem schwäbischen Preis

nuBoxx B-50: Unser Liebling der neuen Serie

Konnte vollends überzeugen

nuBoxx BF-10: Pfiffiger Wand- und Regallautsprecher

nuSub-Serie: perfekter Bass in jeder Größe - Testurteil 94%!

nuSub-Serie: perfekter Bass in jeder Größe

"Subwoofer des Jahres"

nuSub XW-700: Leserwahlsieger "Goldenes Ohr 2021"

"Boxenset des Jahres"

nuLine 264 Set mit nuSub XW-900: Leserwahlsieger!

Für einen Sub dieser Größe eine echte Hausnummer

nuSub XW-700: eine echte Hausnummer!

Überragend in Preis und Leistung

nuPro X-3000 RC + nuSub XW-700: Preis/Leistung: Überragend

Multitalentiert und bassstark - inklusive Raumkorrektur

nuSub XW-700: 9.5 von 10 Punkten!

Echtes Highlight zum Hammerpreis

nuSub XW-700: Highlight zum Hammerpreis

Eine echte Bereicherung - nuSub XW-700

nuSub XW-700: Eine echte Bereicherung

Absolute Test-Empfehlung - die Masterclass

nuPro X-3000 RC + nuSub XW-700: Absolute Test-Empfehlung

Ganz großes High-End, zum verwirrend kleinen Preis.

nuPro X-3000 + nuSub XW-700: "ganz großes High-End"

"Sehr gut - überragend" im Doppelpack!

nuConnect amp X mit nuSub XW-700: sehr gut – überragend


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.

Monacor ILA-1020
Level reducer
€21.90 / Piece

nuCable Y-Adapter 6
Subwoofer adapter
€10.00 / Piece

nuCable Y-Adapter 9
High End Subwoofer adapter
€32.00 / Piece

nuCable Y-Sub 6
Subwoofer cable
€15.00 / Piece

-20 %
nuConnect trX
Wireless Transceiver
€119.00 / Piece €149.00 (€30.00 saved)

Lowest price in the last 30 days before price reduction: €99.00 / unit
Staywired Pro Flex
Organisational talent
€12.50 / Piece

Content: 0,5 Meter (€25.00 / 1 Meter)

XRC Android Interface
Smartphone Measuring Microphone
€39.00 / Piece

Not the right one? We recommend taking a look at related products that you might like.

nuConnect ampX
Smart amp
€725.00 / Piece

-20 %
nuConnect trX
Wireless Transceiver
€119.00 / Piece €149.00 (€30.00 saved)

Lowest price in the last 30 days before price reduction: €99.00 / unit
-10 %
nuPro AS-3500
Combining all class soundbar
€895.00 / Piece €995.00 (€100.00 saved)

Lowest price in the last 30 days before price reduction: €895.00 / unit
nuPro XS-8500 RC
Highest Definition Soundbar
€1,969.00 / Piece


Questions about subwoofers

The requirements of our customers have changed over time and are increasingly moving towards greater living room integration. Therefore, the move from frontfire to downfire woofers came about at the request of our customers.

We give a 2-year warranty on active speakers. You can find exact details of our conditions here. However, we also offer a warranty extension to a total of 5 years, all info can be found here.

If you want to use an Android smartphone with the X-Room Calibration, you need our XRC Android interface. This is necessary because the different phone manufacturers use different microphones, drivers and operating system versions. Due to the separate microphone, we can guarantee a good result.


4 of 21 reviews

4.81 / 5


Honest speakers - Honest reviews

Satisfied? Or can we do something better with our products? Then write us your review. Simply log in to your account and write the review of your order here.

Here with us, every review is checked for authenticity and is then approved. So you can be sure that the feedback you give us about our products is genuine.


14 December 2023

Sagenhafter Subwoofer


14 December 2023



3 April 2023

Für mein 30m² Wohnzimmer ausreichend


23 April 2022

Klasse Produkt, super verpackt

Technical information

Subject to technical changes.

Box type, sound and recommended use

Even the more compact of the two nuSub woofers, with its 20-centimeter chassis, achieves a lower cutoff frequency of 26 Hertz at minus three decibels and can thus, for example, even extend the bass response of a nuPro XS-6000 RC. Above all, however, it is ideal for space-saving sub/sat combinations with compact satellites, be it passive models such as a nuLine 34 or active speakers like the nuPro XS-3000. Thanks to its manageable dimensions and downfire design, it also fits discreetly into smaller living rooms. However, 250 watts of music power ensure inspiring low-frequency pressure even in spacious listening environments.

Even more bass is achieved by adding a second XW-700 or even more subwoofers. Cable clutter is not to be feared, because the active bassists of the new XW series can be optionally supplied wirelessly! The source is either an amplifier or active loudspeaker from our X generation (nuConnect ampX, nuPro X or nuPro XS) or the nuConnect trX, a special radio transmitter that can also be used to make older AV receivers or stereo amplifiers with sub-out fit for the wireless age. The wireless control makes the operation of XW subwoofers as convenient as simple - even with multiple copies! But of course, the connection can also be made to the AV receiver or amplifier via a conventional Y-cable.

There are also several options for operation. Settings such as crossover frequency or level can be easily made via the rotary control on the back of the subwoofer. Pressing the knob switches between the two functions, and the currently selected value is indicated by correspondingly colored LEDs. The control is even easier and graphically clearly presented with the help of our free app Nubert X-Remote for iOS and Android. With the help of the program's calibration function, the subwoofer can even be ideally adjusted to the room acoustics. Droning effects or "bass holes" are reliably reduced. You can find out more about the mobile app in the box below.

This unit can be paired with other X-Platform products via Nubert's X-Connect and X-Connect Surround wireless standards.

Both standards transmit sound data in high resolution, securely and with minimal latency. X-Connect transmits 2 channels at 192 kHz and 24 bits for maximum performance in stereo operation. X-Connect Surround, on the other hand, transmits up to 8 channels at 48 kHz and 24 bits for simple and elegant integration in multi-channel systems.

The speakers of the nuPro X and XS series and the ampX amplifier transmit in the X-Connect standard, as does the nuConnect trX adapter. This can also be used to integrate hi-fi and home theater products from other manufacturers into the wireless network. The soundbase nuPro XS-8500 RC and the AV preamplifier nuXinema preAV transmit in the X-Connect Surround standard.

The models in our nuSub series can therefore be used to effortlessly expand stereo satellite speakers as well as soundboards and home theater systems.

Design principle and housing

The nuSub XW-700 is designed as an active bass reflex subwoofer in the so-called downfire design. This means that the drivers and bass reflex tube radiate downwards. Solid feet with height-adjustable spikes ensure distance and a horizontal stand. The special acoustic challenges of this design are mastered, among other things, by the clever use of a digital signal processor - more about this in the section "Control, App and Room Measurement" below.

Einer der Vorteile des Downfire-Konstruktionsprinzips ist das dezente Design. Als ebenmäßiger Quader mit sanft gerundeten Kanten fügt sich der XW-700 elegant in praktisch jeden Einrichtungsstil ein. Die Anschlüsse und Bedienelemente wurden dezent auf der Rückseite platziert. Das Gehäuse besteht aus robustem und akustisch vorteilhaftem Holzfasermaterial (MDF) und ist mit einem hochwertigen Lack in seidenmattem Finish versehen.


The nuSub XW-700 relies on a 20-centimeter chassis with extra-long excursion, which has been optimized specifically for the requirements of this subwoofer and the downfire design. The wide, flexible surround allows for particularly wide diaphragm excursions. The generously dimensioned drive exhibits high efficiency and can generate high sound pressures with the lowest possible distortion. Additional equalization is provided by the integrated signal processor, which optimally controls the chassis in every reproduction situation.

Amplifier module

The power amplifier of the nuSub woofers is based on the proven digital amplifiers of the nuPro series and features the same high-quality signal processing and impressive efficiency. With 180 watts nominal or 250 watts music power and highest impulse fidelity, the nuSub XW-700 gives impressive bass performances in larger listening rooms. All settings are managed by the built-in Digital Signal Processor (DSP).

Optional wireless operation

The subwoofers in the nuSub series have a line input that allows them to be connected to standard receivers and amplifiers with a sub output using a Y-cable. Alternatively, each subwoofer can also receive sound signals wirelessly. Either our amplifiers nuConnect ampX and nuXinema preAV or a master speaker from the nuPro X and XS series (for example a nuPro XS-4000 or also the soundbar nuPro XS-8500) are recommended as sending stations. With the nuConnect trx, we also offer a transmitter module that can be used to make conventional receivers fit for the wireless age. The radio range is typically around 15 meters. The possibilities are endless!

Control, app and room calibration

As an alternative to the knob on the subwoofer, the free Nubert X-Remote app for iOS and Android can also be used. The use of the app is particularly recommended for complex operating procedures, as it presents advanced functions such as the definition of the crossover frequency in a particularly clear manner. The program automatically adapts the menu interface to the equipment of the respective connected device. A speaker from the nuPro X series offers different functions than, for example, the integrated amplifier nuConnect ampX.

The app's advanced features include bass equalization, which enables optimal low-frequency reproduction at the listening position and reliably minimizes dreaded room modes. The application is very easy to use: Start the app, connect to the nuSub and navigate to the X-Room Calibration entry via the main menu in the upper left corner. Now follow the instructions of the app to start the calibration. To do this, simply play and record the test signal (white noise) for a few seconds; the process is largely automatic. The smartphone or tablet then calculates the best possible tuning curve from the played back test signal and then transmits this to the subwoofer's Digital Signal Processor (DSP), where the calibration is permanently stored. The calibration can be stored in one of the preset locations so that a comparison between activated optimization and unchanged playback is possible at any time. The X-Room Calibration function can be used in parallel with the other sound settings.

Attention: For technical reasons, the calibration only works with current iOS devices using on-board tools. Android smartphones and tablets do not provide reliable measurement results due to the large number of microphones used with different parameters. The solution is the optional Nubert XRC Android Interface: a compact plug-in module that connects to the USB input (type C) of the mobile device and gives the X-Remote app access to a precise measurement microphone and a sophisticated analog-to-digital converter. This handy USB dongle can be used to accurately capture the XRC system's measurement tone or room response, and then the app can calculate the optimal correction curve and transmit it to the signal processor. More information about the application can be found in the manual.

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 optimization and insights into the development and history of Nubert loudspeakers and devices.