WIDEBAND POINT SOURCE
By employing a single wideband driver, the midrange and high frequencies are reproduced seamlessly, avoiding the time and phase errors associated with typical multi-way speaker designs while also providing point source coherence.
ISOBARIC BASS
Two 10 inch woofers driven in tandem allow the B300 to reproduce low bass with serious authority. Capable of 17 Hz F3 anechoic.
Active Resonance Control
The enclosure applies Constrained Layer Damping(CLD) in its construction. Used to damp unwanted resonance from the enclosure walls, avoiding distraction and preserving musical timbre, accuracy and focus.
Wideband Point Source
Multi-way loudspeaker systems generally suffer from time and phase errors in the critical 1 kHz to 3 kHz frequency region. Primarily due to splitting the mid and high frequencies between multiple drivers necessitating crossovers that are centered within this region. Imperfect physical alignment of the multiple drivers is also a significant contributor. This can lead to a number of audible issues that ultimately degrade the connection between listener and music.
Employing a single wideband driver to cover completely the midrange and high frequency bands eliminates these issues, it also benefits from a point source radiation pattern. These attributes are key to the B300’s ability to provide an extraordinarily coherent performance and effortless connection to the music.
Lighter, Faster, cleaner
The moving mass of a 6.5 inch midwoofer typically used in a 2-way loudspeaker is 15-25g. With a moving mass of only 2.5g, the B300’s wideband driver stores far less energy, meaning it responds faster to the input signal, starting and stopping with minimal ringing. Resulting in the heart of the music sounding cleaner and more natural.
Waveguide & Phase Plug
With the goal of achieving maximal linearity and smooth dispersion. The shape of the wideband driver’s unique waveguide and phase plug are the product many hours of testing, making incremental improvements over dozens of iterations.
Isobaric Bass
The two 10 inch woofers are coupled by a small chamber and work in tandem as essentially one drive unit. Called Isobaric loading, this effectively halves the loudspeaker enclosure volume requirement. Allowing the B300 to produce a bass response equal to that of a standard single driver enclosure twice its size. Resulting in formidable low frequency performance that is normally unavailable in the stand-mount loudspeaker market. With an F3 of 17 Hz anechoic, there is no need for space hogging subwoofers either.
Aside from just being less cumbersome, reducing cabinet size also has acoustic benefits. By minimizing cabinet wall surface area, resonance and reflections are equally minimized, improving imaging and soundstage focus.
Tunable Reflex Port
Designed to accommodate a variety of listening spaces and personal preferences, the B300 features a tunable bass reflex port. Inserts are provided to adjust the bass response, whether elevated, reduced, or neutral low frequency balance is preferred.
Active Resonance Control
Faithful musical reproduction is the foremost design objective at Sono Vera. An important step in this pursuit is avoiding additional resonance generated by the loudspeaker enclosure itself. The B300 employs an active resonance control method called Constrained Layer Damping(CLD). The cabinet walls consist of multiple layers, the center of which is a damping layer where vibrational energy is converted into heat energy. This quickly shuts down resonance, preserving accuracy, timbre and focus.
Bi-Amp Compatible
Separate connections for the wideband and woofer driver are used to accommodate Bi-amping. If a single amplifier is used the connections can be bridged using the included spade-to-banana links.
Low Loss Crossover
The internal crossover network features is point-to-point wiring, high quality components with no ferromagnetic materials for minimal signal degradation.
Handcrafted cabinet
The B300’s enclosure is handcrafted in the USA. Before assembly each individual section is precision CNC machine cut. It is then covered with plank-matched American Black Walnut veneer. After careful preparation the enclosure is sealed and top coated with several coats of custom tinted instrument lacquer to achieve a warm vintage glow that is smooth to the touch.
The wideband driver’s waveguide, phase plug, woofer bezel and Sono Vera badge are solid cast urethane. They can be made in a variety of colors and are held in place magnetically to allow for simple swapping.
SMR Isolation Stand
Not just an aesthetic compliment to the B300. The SMR Isolation stand is equipped with custom designed mounting isolators. These isolators are designed to convert resonance energy that would normally travel between the floor and loudspeaker or even the stand and the speaker into heat within the isolators. Preventing energy transfer improves overall clarity and low frequency resolution.
Effective Isolation
Vibration measured at the loudspeaker’s mounting surface using an accelerometer determines the effectiveness of loudspeaker isolation. The blue line shows the noise floor measured by the accelerometer. Deviation from the blue line indicates resonance passing from the loudspeaker to its mounting surface. 100% effective isolation would produce a line that perfectly tracks the noise floor. As shown, when using standard 1.5″ diameter by 0.25″ deep rubber isolator pads(orange line) in place of the SMR isolators, their effectiveness becomes clear.
