音箱結(jié)構(gòu)設(shè)計教材-資料下載頁
2025-06-29 05:39本頁面
【正文】 ing this sort of enclosure for the bass driver (woofer) and attaching a second enclosure for the treble (and possibly midrange) units. ![if !supportEmptyParas] ![endif] Compared to closedbox infinite baffle systems, the bass reflex vented enclosure possesses several unique characteristics: 167。 ![endif] Lower cone excursion near the box’s resonant frequency, resulting in a higher power handling and less distortion. However there is a high potential for cone excursion at frequencies well below the box’s resonant frequency (another argument for getting this frequency as low as possible) for example subsonic noise caused by record warp if using a turntable. Fortunately, many drivers do not respond to such low frequencies, and they could be filtered if necessary u sing a filter. 167。 In theory a higher efficiency of +3dB pared to the infinite baffle enclosure. This is because of a lower cone mass requirement for the drive unit. ![if !supportEmptyParas] ![endif] Example of a bass reflex design ![if !vml] ![endif] Passive Radiator (ABR) ![if !supportEmptyParas] ![endif] Another variation on the Bass Reflex design is the passive radiator. Also known as an Auxiliary Bass Radiator (ABR), this is a dummy loudspeaker, . a cone suspension without the magnet and coil. It’s mass serves as a substitute for the air in the pipe in a bass reflex enclosure. It avoids the pipe noise and air turbulence and also serves as a barrier to midfrequencies which may radiate through a pipe due to internal reflections. They provide the same low frequency extension but without the problems of noises and coloration, and work well with smaller enclosures. This method is employed by several manufacturers, including Celestion and many ‘tower’ format loudspeakers.![if !supportEmptyParas] ![endif] The passive radiator![if !supportEmptyParas] ![endif] ![if !supportEmptyParas] ![endif] ![if !vml] ![if !supportEmptyParas] ![endif] ![if !supportEmptyParas] ![endif] ![if !supportEmptyParas] ![endif] ![if !supportEmptyParas] 
鄂ICP備17016276號-1