Variovent 290001
The Scanspeak Variovent or 'Flo-Vent' is essentially a resistive reflex port that offers controlled cabinet venting at low frequencies. Installing this vent in a sealed cabinet effectively lowers the woofer Q factor & increases the theoretical cabinet internal volume by a fifth, as seen by the woofer.
The aperiodic vent bridges the gap between infinite baffle & reflex designs, it allows deeper bass from sealed cabinets whilst offering a 3rd order final rolloff, resulting in an improved transient response over the sharp 4th order of traditional bass reflex designs. It is tempting when designing smaller systems with high compliance woofers to use small diameter, longer reflex ports to obtain a low tuned frequency - this can however give rise to chuffing noises from the port - the Variovent does not suffer from this.
Diameter 130mm
Cutout hole 110mm
In UK stock for immediate dispatch.