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What is a bass-reflex loudspeaker?
This is a loudspeaker whose characteristic feature is that it has one or more vents, also known as resonators (the VOODOO loudspeaker has just one on its front panel, for example).
A vent is an air outlet materialized by a tube of varying length and diameter which is added to the loudspeaker.
What's it for?
The purpose of the port in a bass-reflex loudspeaker is to reinforce the low frequencies (bass sounds) that make you vibrate, when the loudspeaker starts to lose effectiveness.
Thanks to this acoustic system, the VOODOO gains precious decibels in the bass range without altering or attenuating the midrange/treble sound, and all in a natural way.
A bass reflex speaker acts like a tuned resonator. The sound produced by the rear wave of the loudspeaker will "excite" the resonator/vent, and it is the latter which, by resonating, will amplify a specific range of frequencies. Particularly low-frequency ranges when we want to broaden the width of the spectrum towards the bass = more bass.
The challenge is to perfectly select all the parameters to resonate and amplify the right frequency range and achieve the best possible low-frequency results.
However, Bass-reflex should not be confused with Subwoofer or subwoofer, which are designed simply to diffuse low-frequency sounds.
The VOODOO stand-alone speaker uses the Bass Reflex system. This means you're dealing with naturally amplified bass, not processed bass.