Diameter - 360mmPassive acoustic systems based on Tang Band broadband speakers, low-frequency design of the passive radiator type housing. A passive radiator is a compromise between a closed box that gives a collected but flat bass and a bass reflex that plays louder but less accurately. The absence of separation filters, spherical housing and the use of high-quality HD speakers allows you to achieve impressive resolution in the mid-frequency range. Connoisseurs of high-quality sound at low volume will get real pleasure, especially when using a tube amplifier. The development was carried out with the participation of Deluxe Acoustics, which has been successfully using similar solutions for mass-produced products for a long time.