Characteristics and sound properties
The NoBox BB unites a number of preferences in a single concept: it achieves the directness of a full-range loudspeaker, in particular in the voice range, and also manages to produce powerful, stable bass without having to fill the room with hardware.
The B 200 - 6 Ohm is used in the NoBox BB together with a 38 cm BGS 40 - 8 Ohm woofer in an open baffle as a dipole. The electric separation between the two drivers is low enough (250 Hz), which enables the full-range speaker to make full use of its capabilities and the BGS 40 - 8 Ohm is effectively the supporting woofer. The BGS 40 - 8 Ohm is a musician's driver with high sensitivity and can, as a result, easily be adapted to the B 200 - 6 Ohm without giving anything away in terms of mean sound pressure.
Despite the baffle being open, which theoretically causes an acoustic short circuit in the bass range, the system produces a dynamic low bass output down to 32 Hz (-10 dB). One reason for this is that the baffle is cut off from the floor and so no acoustic short circuit can take place in this direction. In addition, the side panels of the cabinet, which are mainly for stability, increase the acoustic distance travelled.
|Rated power||200 W|
|Maximum power||300 W|
|Nominal impedance Z||4 Ohm|
|Frequency response||32–20000 Hz|
|Mean sound pressure level||90 dB (2,83 V/1 m)|
|Cut-off frequency||250 Hz|
|Principle of Housing||offener Dipol/open dipole|
|Outer dimension height||1215 mm|
|Outer dimension width||538 mm|
|Outer dimension depth||355 mm|
Frequency- and impedance response
- Characteristics / Sound
Extract from Klang & Ton
"What a surprise! These NoBox speakers are devilishly good. The treat we were offered in our editorial offices left even the most hardened professional testers open-jawed. Although the test results promised us a treat, none of us had really expected to hear such deep, clearly defined and crisp bass. Not once did we feel there was anything missing in the bass department."
"But it is not just the bass that makes this construction stand out - it is more the phenomenal B 200 wide-range speaker which, freed from the restraints of a cabinet, excels beyond compare."
The impression the sound makes is one of freedom and independence with a bass quality which is so good that the lack of sub-double bass is not perceived as a detraction. What really made us sit up and take notice is the unique combination of spatial separation and the phenomenal clarity of the sound picture. The overall impression these NoBox speakers make is less an overbearing, special-effects one than one of unbelievable coolness. The music is simply there, unpretentious and unobtrusive with sufficient objectivity and yet straight to the heart. Brilliant, this has given us a completely new set of impressions from the field of music."
Extract from Stereoplay
Visaton, the only remaining large-scale manufacturer in the German DIY market, has brought together two audiophile concepts here: The NoBox is a combination of the 20 cm full-range driver and 40 cm dipole bass speaker.
In the listening test, the NoBox came out tops in its clear reproduction of the upper frequencies and treated us to far more detail than a speaker without a tweeter should do. The voices were in 3d - in the room with us - and the voice reproduction was absolutely first-rate. The lower-range sound was equally astounding: while we were expecting relatively thin but precise bass ripples we were met by powerful, deep, crisp waves of bass.