ATM-50 nuVero

Even without the ATM module, the nuVero 50 reproduces an excellent sound image with a good bass response for this size of cabinet. However, with its small net volume of only 3 litres, it is a small speaker that requires the support of a subwoofer - or the ATM nuVero 50 module - for a "massive" sound.

Without the ATM module, its bass fullness (wall-mounted) is on a par with a nuBox 303 - but with better precision.

In a direct comparison with the nuVero 30 (without ATM), which has a net volume of 8 litres, the nuVero 50 with ATM sounds somewhat more voluminous when the bass control is in the middle position.

To equal the bass fullness of a nuLine 34, the bass control must be set to the "2 o'clock" position.

However, thanks to the ATM-50's electronics, which are specially tuned to the nuVero 50, the sound performance can be significantly enhanced! Placed between the signal source and the amplifier, the customised ATM modules ensure that the amplifier delivers more power, if necessary, precisely matched to the design of the speaker. This "trick" allows the speaker's considerable sound reserves in the bass range to be activated without distorting the sound.

The ATM-50 nuVero module allows not only a significant extension of the bass range and adjustable bass boost, but also a reduction of the low bass.
The "treble" control offers an exceptionally effective "musical" solution for adapting the sound image to the acoustic conditions of the room, the selected volume, personal listening tastes and recordings that have been mixed with varying degrees of "massiveness" or "aggressiveness".

Although changes in the bass range are generally perceived as more spectacular, the tuning module also makes it possible to influence the mid-high range, which is of great importance for a perfect sound experience. It is important to know that a nuVero ATM does not simply attenuate or boost high tones selectively, as is the case with a typical treble control on an amplifier. This bends the frequency response in an inharmonic way. If, on the other hand, the MID/HIGH control of the nuVero module is adjusted, the frequency response of the speaker is raised or lowered linearly from the bass range to the upper limit of audibility.

The functional principle of the active tuning modules

The cabinet volume of a speaker influences the bass response. To put it simply: the smaller the speaker, the lower the bass response - even if the built-in drivers could in principle reproduce lower frequencies. Günther Nubert's remedy: If the cabinet "slows down" the bass reproduction, the amplifier has to "step on the gas" more in the lower frequencies.

To enable the amplifier to activate these reserves, the active tuning module forces it to provide more power in the range affected by the level drop, thereby shifting the lower cut-off frequency of the speaker.

This audibly improves the speaker's bass performance. At low listening levels, a kind of "loudness effect" can be achieved with this clever circuit. With the special tuning modules that are customised precisely for your particular speaker, the low-frequency extension is generally more extensive than with the newer universal modules, but even these can achieve impressive results depending on the speaker.

The second advantage of the active tuning modules is the convenient sound control. With the help of precise rotary controls for the bass range and the mid and high frequencies, the playback spectrum can be optimally adapted to personal taste or tuned to the listening environment or recording. The basic character of the piece of music is retained because the treble or bass is evenly intensified or reduced and not "bent" at certain points, as is the case with conventional tone controls or inferior equalisers.

Installation of an active tuning module

Active tuning modules can be integrated into a modern playback chain in two ways: either between the player and amplifier or between the preamplifier and power amplifier. The first option works almost everywhere as long as the amplifier and player have analogue cinch inputs or outputs. Depending on the ATM version, up to three source devices can be connected in this way (ATM nuBox: one player) and selected via a rotary selector switch on the module.
The second type of connection is particularly suitable for stereo systems in which separate preamplifiers and power amplifiers are used. Some integrated amplifiers that can be "split" internally or have monitor inputs are also suitable for this type of connection. Please note: This type of integrated amplifier is becoming increasingly rare; AV receivers equipped in this way have almost completely disappeared from the market.
If you have a highly integrated system such as a network receiver without corresponding connections or use players that only offer digital outputs, you cannot use ATM with these!
Nor can Active Tuning Modules be connected to the loudspeaker outputs of an amplifier.
If you are interested, please consult our advisory team to determine the optimum connection type for your system!

Scope of delivery:

• ATM module
• Carrying case
• Power supply unit
• 2 x cinch cables, 0.8 m each